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1. First Report of a Member of the Fusarium oxysporum Species Complex Causing Cladode Rot in Nopalea cochenillifera in Brazil

Author:
Santiago, M. F.; Santos, A. M. G.; Inácio, C. P.; Neves, R. P.; Andrade, D. E. G. T.; Santos, D. C.; Assis, T. C.; Doyle, V. P.; Vieira, W. A. S.; Veloso, J. S.; Câmara, M. P. S.; Laranjeira, D.
Source:
Plant disease 2018 v.102 no.12 pp. 2652
ISSN:
0191-2917
Subject:
Fusarium oxysporum; Opuntia ficus-indica; agar; alcohols; cladodes; conidia; culture media; databases; death; feeds; growth chambers; humidity; hyphae; leaves; loci; mycelium; pathogenicity; pathogens; peptide elongation factors; phenotype; photoperiod; phylogeny; semiarid zones; sodium hypochlorite; statistical analysis; Brazil
Abstract:
... Nopalea cochenillifera is economically important in Brazil owing to its use for animal feed in semiarid areas. A disease-causing cladode rot and prickly pear cactus death was observed in April 2015 in Surubim in northeast Brazil. Disease symptoms on the cladodes initially consisted of softened areas that subsequently wilted and fell off the plant after a few days, becoming dark with the internal w ...
DOI:
10.1094/PDIS-12-17-1977-PDN

2. First Report of Anthracnose of Apple Caused by Colletotrichum fructicola in Korea

Author:
Kim, C.; Hassan, O.; Lee, D.; Chang, T.
Source:
Plant disease 2018 v.102 no.12 pp. 2653
ISSN:
0191-2917
Subject:
Colletotrichum fructicola; DNA; Glomerella cingulata; agar; anthracnose; apples; appressoria; conidia; crop production; cultivars; culture media; data collection; fruits; genes; hyphae; internal transcribed spacers; mycelium; orchards; pathogenicity; photoperiod; phylogeny; polymerase chain reaction; sodium hypochlorite; streptomycin; Korean Peninsula
Abstract:
... In August 2017, a severe outbreak of anthracnose disease was observed in commercial apple orchards of cultivar Fuji in Sangju, Korea (Republic of). Fifteen apple fruits (from three commercial orchards) showing dark, circular, and necrotic lesions were collected from the field and brought to the laboratory. Small pieces (2 mm²) of necrotic tissue were cut with a sterile scalpel from the center of t ...
DOI:
10.1094/PDIS-05-18-0717-PDN

3. First Report of Ascochyta medicaginicola Causing Leaf Blight Disease of Pointed Gourd in India

Author:
Sarkar, T.; Chakraborty, P.; Karmakar, A.; Saha, A.; Saha, D.
Source:
Plant disease 2018 v.102 no.12 pp. 2657
ISSN:
0191-2917
Subject:
Ascochyta; DNA primers; Trichosanthes dioica; aeration; agar; conidia; culture media; defoliation; greenhouses; humidity; internal transcribed spacers; leaf blight; leaves; mycelium; pathogenicity; polymerase chain reaction; pycnidia; ribosomal DNA; ribosomal RNA; runoff; sodium hypochlorite; sporulation; spraying; summer; tissues; vegetables; India
Abstract:
... Pointed gourd (Trichosanthes dioica Roxb.) is a popular summer vegetable in India. During April 2017, severe leaf blight symptoms were observed in many fields located in the sub-Himalayan region in West Bengal state of India (21.14 to 21.30°N, 78.82 to 79.02°E). Lesions initially appeared as yellow spots (4 to 5 mm in diameter) on leaf margins that gradually expanded to cover almost the whole leaf ...
DOI:
10.1094/PDIS-03-18-0543-PDN

4. First Report of Ber (Zizyphus mauritiana) Leaf Spot Caused by Alternaria alternata in Pakistan

Author:
Mehmood, N.; Abbas, M. F.; Rafique, K.; Sattar, A.; Aurangzeb, W.; Ghuffar, S.; Qamar, M. I.
Source:
Plant disease 2018 v.102 no.12 pp. 2642
ISSN:
0191-2917
Subject:
Alternaria alternata; Ziziphus mauritiana; conidia; conidiophores; costs and returns; culture media; disease control; farmers; fruits; fungi; genes; glass; hyphae; internal transcribed spacers; leaf spot; leaves; pathogenicity; pathogens; photoperiod; plant rots; polygalacturonase; relative humidity; ribosomal DNA; sodium hypochlorite; strawberries; surveys; tissues; traditional medicine; China; Pakistan
Abstract:
... Ber (Zizyphus mauritiana Lamk.) is called the apple of the desert and is also known as the poor man’s fruit. In Pakistan, apart from direct consumption, the fruit is widely used in traditional medicines. It is cultivated on over 5,100 ha with a production of approximately 25,000 metric tons, but its production is continuously decreasing in the country (Government of Pakistan 2016). During February ...
DOI:
10.1094/PDIS-12-17-2017-PDN

5. First Report of Cladosporium colocasiae Causing Leaf Spot on Taro (Colocasia esculenta) in Mexico

Author:
Vásquez-López, A.; Palacios-Torres, R. E.; Montiel-Frausto, L. B.; Medero Vega, V. R.; Lima, N. B.; Camacho-Tapia, M.; Tovar-Pedraza, J. M.
Source:
Plant disease 2018 v.102 no.12 pp. 2649
ISSN:
0191-2917
Subject:
Bayesian theory; Cladosporium; Colocasia esculenta; ampicillin; conidia; conidiophores; culture media; data collection; genes; greenhouses; internal transcribed spacers; isolation techniques; leaf spot; leaves; mycelium; oligodeoxyribonucleotides; pathogenicity; peptide elongation factors; phylogeny; plant pathogenic fungi; polymerase chain reaction; rifampicin; sodium hypochlorite; sporulation; taro; temperature; white light; Mexico
Abstract:
... In September 2017, symptoms of leaf spot were observed on approximately 80% of taro (Colocasia esculenta var. antiquorum) plants at a commercial field located in San Juan Bautista Tuxtepec, Oaxaca, Mexico. Lesions on diseased leaves were dark brown and oval to irregular, sometimes coalescing to cover large areas of the leaf surface. To isolate the fungus, small fragments from adjacent tissue to le ...
DOI:
10.1094/PDIS-04-18-0606-PDN

6. First Report of Colletotrichum karstii Causing Anthracnose on Lotus Bamboo (Dracaena sanderiana) in China

Author:
Li, Y. L.; Yan, Z. B.; Wang, Y. H.; Lin, Q. K.; Wang, S. B.; Zhou, Z.
Source:
Plant disease 2018 v.102 no.12 pp. 2641
ISSN:
0191-2917
Subject:
Colletotrichum; DNA; Dracaena sanderiana; Lotus; anthracnose; bamboos; calmodulin; conidia; culture media; disease incidence; ethanol; fungi; genetic databases; glyceraldehyde-3-phosphate dehydrogenase; greenhouses; growth chambers; hyphae; internal transcribed spacers; introns; leaf spot; leaves; loci; mycelium; oligodeoxyribonucleotides; ornamental plants; ornamental value; pathogenicity; pathogens; photoperiod; relative humidity; sequence alignment; sodium hypochlorite; tubulin; China
Abstract:
... Lotus bamboo (Dracaena sanderiana Lotus) is a popular ornamental plant in China. In October 2015, a leaf spot disease was observed on D. sanderiana in a greenhouse (34°36′N, 112°25′E) of Henan University of Science and Technology, Henan Province, China. Initially, the tips of leaves had yellow sunken spots that became irregular light-brown necrotic lesions. Black acervuli developed in concentric r ...
DOI:
10.1094/PDIS-04-18-0579-PDN

7. First Report of Colletotrichum theobromicola Causing Leaf Spot in Sapote (Manilkara zapota) Seedlings in Brazil

Author:
Martins, M. V. V.; Lima, J. S.; Araújo, F. S. A.; Ootani, M. A.; Viana, F. M. P.; Cardoso, J. E.; Coutinho, I. B. L.; Gonçalves, F. J. T.; Fonseca, W. L.
Source:
Plant disease 2018 v.102 no.12 pp. 2641
ISSN:
0191-2917
Subject:
Colletotrichum; DNA; Eucalyptus; Manilkara zapota; actin; agar; calcium; calmodulin; carrots; chitin synthase; color; conidia; ethanol; fruit consumption; fruits; fungi; genes; glyceraldehyde-3-phosphate dehydrogenase; growth chambers; internal transcribed spacers; iron; leaf spot; leaves; pathogenicity; perennials; phosphorus; potatoes; raw fruit; seedlings; semiarid zones; sequence homology; sodium hypochlorite; tissues; tubulin; vitamin A; wet season; Brazil
Abstract:
... Sapote (Manilkara zapota L., family Sapotaceae) is a tropical perennial plant native to Asia largely cultivated on the coastal and semiarid areas of northeastern Brazil, mainly for fresh fruit consumption. Sapote is a succulent and sweet fruit, esteemed as a nutritious food for its content of vitamins A, B1, B2, B5, and C, as well as carbohydrates, calcium, phosphorus, and iron. In 2014, during th ...
DOI:
10.1094/PDIS-04-18-0587-PDN

8. First Report of Cytospora nivea Causing Cytospora Canker on Walnut (Juglans regia L.) in the Tianshan Mountains Region of Xinjiang, China

Author:
Zhao, S. F.; Guo, K. F.; He, L.; Yiming, A.
Source:
Plant disease 2018 v.102 no.12 pp. 2640
ISSN:
0191-2917
Subject:
Cytospora; DNA primers; Juglans regia; Valsa sordida; bark; blight; branches; color; conidia; conidiomata; cortex; cotton; culture media; dieback; discoloration; disease incidence; forests; fungi; genes; internal transcribed spacers; mountains; mycelium; nails (equipment); pathogenicity; pathogens; polymerase chain reaction; ribosomal DNA; sodium hypochlorite; trees; tubulin; walnuts; xylem; China
Abstract:
... Walnut (Juglans regia L.) forms forests in which it is one of the dominant trees in Ily Valley of the Tianshan Mountains region of Gongliu County, Yili Kazak Autonomous Prefecture, Xinjiang, China (Chen et al. 2007). In July 2015, some walnut trees (>10 years old) were found with symptoms of tip blight, branch dieback, and canker formation. Disease incidence ranged from 5 to 10% in severely affect ...
DOI:
10.1094/PDIS-03-18-0498-PDN

9. First Report of Fruit Rot in European Pear Caused by Diaporthe eres in Italy

Author:
Bertetti, D.; Guarnaccia, V.; Spadaro, D.; Gullino, M. L.
Source:
Plant disease 2018 v.102 no.12 pp. 2651
ISSN:
0191-2917
Subject:
Diaporthe; Prunus persica; Pyrus communis; anamorphs; conidia; culture media; endocarp; fluorescent lighting; fungi; genomics; internal transcribed spacers; loci; mycelium; pathogenicity; pathogens; pears; plant rots; planting; pycnidia; sodium hypochlorite; stem cankers; summer; temperature; tissues; Italy
Abstract:
... During the summer periods from 2014 to 2017, an unknown rot was observed on about 150 ripe fruit of an old variety of European pear (Pyrus communis L.) grown in a private garden located in Torre Canavese (Torino Province, northern Italy). The prevalence of the rot in the planting was estimated at 80% incidence. External symptoms were barely visible and consisted in pale brown soft irregular spots. ...
DOI:
10.1094/PDIS-03-18-0499-PDN

10. First Report of Fruit Rot of Bell Pepper Caused by Fusarium incarnatum in Pakistan

Author:
Tariq, A.; Naz, F.; Altaf, R.; Jabeen, Z.; Rauf, C. A.; Irshad, G.; Raja, M. U.; Shaheen, F. A.; Sultana, T.; Aslam, M.; Bennett, J. W.; Zhang, N.
Source:
Plant disease 2018 v.102 no.12 pp. 2645
ISSN:
0191-2917
Subject:
Capsicum annuum; DNA; Fusarium incarnatum; calyx; color; conidia; cream; culture media; databases; disease control; disease incidence; disease severity; droplets; fluorescent lighting; fruits; fungal growth; fungi; genes; hyphae; mycelium; pathogenicity; pathogens; peptide elongation factors; plant rots; seeds; sodium hypochlorite; sweet peppers; tubulin; Pakistan; Trinidad and Tobago
Abstract:
... Evidence of fruit rot disease was observed in 12 bell pepper (Capsicum annuum L.) fields located in the Chakwal district (32°56′00″N, 72°51′30″E) of Pakistan during the period June 2016 to 2017. Disease incidence was estimated to be between 15 and 24%. Yield loss in affected fields was estimated as 11%. Symptoms of disease were seen as water-soaked, discolored necrotic lesions predominantly around ...
DOI:
10.1094/PDIS-02-18-0221-PDN

11. First Report of Fusarium cerealis Causing Root Rot on Soybean

Author:
Abdelmagid, A.; Hafez, M.; Lawley, Y.; Adam, L. R.; Daayf, F.
Source:
Plant disease 2018 v.102 no.12 pp. 2638
ISSN:
0191-2917
Subject:
Fusarium cerealis; agar; air drying; biological safety cabinet; chlorosis; color; conidia; cultivars; culture media; developmental stages; fungi; genes; greenhouses; growth retardation; hyphae; inoculum; leaves; loam soils; microscopy; mycelium; mycotoxins; night temperature; nitrogen fixation; nucleotide sequences; pasteurization; pathogenicity; pathogens; peptide elongation factors; polymerase chain reaction; potatoes; relative humidity; root rot; root systems; roots; seeds; sieves; sodium hypochlorite; soybeans; stems; streptomycin; sulfates; Manitoba
Abstract:
... In 2017, soybean plants (cultivar 24-10RY, R4 growth stage) with poor standing, stunting, and leaf chlorosis were collected at Carman, Manitoba. They had few nitrogen-fixing nodules and lateral roots left on the root system and reddish brown-to-black lesions on tap and lateral roots. Roots and lower stems had cortical decay symptoms when split in half. Root pieces (1 to 2 cm) from 48 plants were s ...
DOI:
10.1094/PDIS-04-18-0556-PDN

12. First Report of Leaf Blotch Caused by Parastagonospora nodorum on Leymus chinensis (Chinese Rye Grass) in China

Author:
Zhang, Y. W.; Nan, Z. B.
Source:
Plant disease 2018 v.102 no.12 pp. 2661
ISSN:
0191-2917
Subject:
DNA primers; Leymus chinensis; Lolium; Parastagonospora nodorum; Septoria; aerial parts; conidia; culture media; ethanol; forage yield; fungi; genes; grazing; greenhouses; host plants; humidity; indigenous species; internal transcribed spacers; leaf blotch; leaves; light microscopes; meadows; mycelium; palatability; pathogen identification; pathogenicity; pathogens; penicillins; perennials; phylogeny; polymerase chain reaction; polymethylmethacrylate; pycnidia; ribosomal DNA; seeds; sequence analysis; sodium hypochlorite; solar radiation; spraying; steppes; sterilizing; streptomycin; summer; wheat; China
Abstract:
... Leymus chinensis (Poaceae) is a rhizomatous native perennial plant with good palatability and high forage yield. The grassland dominated by L. chinensis is widespread from the Sanjiang plain of eastern China to the eastern part of Inner Mongolia (Xu and Zhou 2006). Septoria blotch has been reported mostly from the United States, Canada, western Australia, southern Germany, Switzerland, Latvia, Fin ...
DOI:
10.1094/PDIS-06-18-0926-PDN

13. First Report of Leaf Spot Caused by Corynespora cassiicola on Jasminum mesnyi in China

Author:
Zhang, Y. L.; Wang, J. Y.; Yin, C. P.; Liu, X. S.
Source:
Plant disease 2018 v.102 no.12 pp. 2643
ISSN:
0191-2917
Subject:
Corynespora cassiicola; DNA; DNA primers; Jasminum; agricultural colleges; alcohols; branches; conidia; conidiophores; cultivars; culture media; disease incidence; fungi; internal transcribed spacers; leaf spot; leaves; mycelium; ornamental plants; pathogenicity; pathogens; plastic bags; polymerase chain reaction; relative humidity; sodium hypochlorite; tissues; China
Abstract:
... Primrose jasmine (Jasminum mesnyi Hance) belongs to Oleaceae and is cultivated worldwide. J. mesnyi is often used as an ornamental plant and Chinese traditional medicine (Li et al. 2017). In January 2018, a leaf spot disease was observed on this cultivar on the campus of Anhui Agricultural University (31°51′51″N; 117°15′31″E) in Hefei City, Anhui Province, China. The disease incidence was about 40 ...
DOI:
10.1094/PDIS-03-18-0431-PDN

14. First Report of Leaf Spot on Basella alba Caused by Alternaria tenuissima in China

Author:
Yu, G.-B.; Wei, J.-P.; Guan, Y.-F.; Shao, W.-J.; Fu, W.-L.; Zhao, Y.-F.; Sheng, Y.-Y.; Yang, D.-W.
Source:
Plant disease 2018 v.102 no.12 pp. 2647
ISSN:
0191-2917
Subject:
Alternaria tenuissima; Basella alba; DNA primers; Paeonia lactiflora; beans; blight; conidia; conidiophores; cultivars; culture media; financial economics; foliar diseases; fungi; genes; greenhouses; herbaceous plants; histones; internal transcribed spacers; leaf spot; leaves; mycelium; olives; pathogenicity; pathogens; polymerase chain reaction; potatoes; sodium hypochlorite; China
Abstract:
... Basella alba is a herbaceous plant in the Basellaceae, and is also known as Rattan or carmine bean in China (Ravi Sankar et al. 2011). A foliar disease on B. alba was observed in 2017 in Daqing, Heilongjiang Province, China. The average incidence of the disease was 35% in infected greenhouses and caused 30% economic loss, which represented about 10% of the greenhouses in northeastern China (total ...
DOI:
10.1094/PDIS-02-18-0352-PDN

15. First Report of Paramyrothecium roridum Causing Myrothecium Leaf Spot on Soybean in Africa

Author:
Haudenshield, J. S.; Pawlowski, M.; Miranda, C.; Hartman, G. L.
Source:
Plant disease 2018 v.102 no.12 pp. 2638
ISSN:
0191-2917
Subject:
DNA; DNA primers; Myrothecium roridum; boxes (containers); conidia; cultivars; culture media; fungi; hosts; internal transcribed spacers; leaf spot; leaves; mycelium; pH; pathogenicity; pathogens; polymerase chain reaction; sodium chloride; sodium hypochlorite; soybeans; sporodochia; Ghana
Abstract:
... Myrothecium leaf spot, caused by Paramyrothecium roridum (Tode) L. Lombard & Crous (Basionym Myrothecium roridum), has been reported on a wide range of plants (Farr and Rossman 2018) including soybeans in the United States (Miller and Roy 1982). To our knowledge, this fungus has not been reported on soybeans grown in Africa. In November 2016, collections of leaves with leaf spots symptoms from thr ...
DOI:
10.1094/PDIS-04-18-0624-PDN

16. First Report of Pestalotiopsis trachicarpicola, a Causal Agent of Leaf Spot of Eucommia ulmoides in Southwest China

Author:
Li, S. J.; Li, S. Y.; Zhang, Z. Y.; Zhu, H. M. Y.; Zhu, T. H.; Qiao, T. M.; Han, S.
Source:
Plant disease 2018 v.102 no.12 pp. 2656
ISSN:
0191-2917
Subject:
DNA; Eucommia ulmoides; Pestalotiopsis; appendages; axenic culture; branches; color; conidia; conidiomata; culture media; cutting; defoliation; ethanol; fuels; fungi; genes; indigenous species; internal transcribed spacers; leaf spot; leaves; manufacturing; mountains; mycelium; olives; pathogenicity; pathogens; peptide elongation factors; polymerase chain reaction; rubber; sodium hypochlorite; spraying; tissues; tubulin; China
Abstract:
... Eucommia ulmoides Oliver is a native species mostly located in the mountainous regions in southwest China. Its timber is widely used for ecological, medical, and agricultural potential, especially in manufacturing (e.g., fuel, fiber, and rubber). Since April 2017, 50% of E. ulmoides individuals in the cultivating areas in Sichuan Province exhibited symptoms similar to leaf spot. Symptoms gradually ...
DOI:
10.1094/PDIS-05-18-0863-PDN

17. First Report of Rosellinia necatrix Causing White Root Rot in Mango Trees in Spain

Author:
Arjona-Girona, I.; López-Herrera, C. J.
Source:
Plant disease 2018 v.102 no.12 pp. 2639
ISSN:
0191-2917
Subject:
DNA primers; Mangifera indica; Rosellinia necatrix; avocados; conidia; culture media; death; hyphae; internal transcribed spacers; lactic acid; leaves; mangoes; melanization; mycelium; orchards; pathogenicity; pathogens; polymerase chain reaction; ribosomal DNA; root rot; roots; seeds; sodium hypochlorite; soil fungi; trees; tropical and subtropical crops; wheat; Spain
Abstract:
... Over the last decade, new plantations of mango (Mangifera indica L.) have been established on the southern coast of Andalusia, Spain, and now cover an area of 3,773 ha. Other subtropical crops, such as avocado, were established in the zone in the 1970s, and their production is decreasing owing to root rot diseases, mainly the one caused by the soilborne fungus Rosellinia necatrix, which causes avo ...
DOI:
10.1094/PDIS-01-18-0133-PDN

18. First Report of Whisker Mold as a Postharvest Disease Caused by Penicillium ulaiense on Citrus (Citrus unshiu) in Korea

Author:
Park, J. H.; Hyun, J.-W.; Park, M. J.; Choi, Y. J.
Source:
Plant disease 2018 v.102 no.12 pp. 2643
ISSN:
0191-2917
Subject:
Citrus unshiu; Penicillium digitatum; Penicillium italicum; agar; citrus fruits; conidia; conidiophores; corn meal; culture media; disease incidence; ethanol; exports; fruits; fungal growth; fungi; genes; internal transcribed spacers; markets; medicinal plants; mycelium; pathogenicity; pathogens; phylogeny; polymerase chain reaction; postharvest diseases; relative humidity; ribosomal DNA; sequence homology; sodium hypochlorite; spraying; streptomycin; temperature; tubulin; winter; Korean Peninsula
Abstract:
... Citrus (Citrus unshiu Markovich) is a commercially important crop in Eastern Asia. In Korea, it is the most consumed fruit in winter, but also its dried peel is traditionally used for medicinal purposes to improve bronchitis and blood circulation and to treat vomiting and dyspepsia. In February 2017, citrus fruits with symptoms of rotting were observed at commercial markets (35°57′N, 126°42′E) in ...
DOI:
10.1094/PDIS-04-18-0603-PDN

19. First Report of a Leaf Anthracnose on Rohdea japonica (Japanese Sacred Lily) Caused by Colletotrichum liriopes (Glomerella Species) in the United States

Author:
Trigiano, R. N.; Boggess, S. L.; Bernard, E. C.; Windham, A. S.
Source:
Plant disease 2018 v.102 no.11 pp. 2380
ISSN:
0191-2917
Subject:
Colletotrichum; DNA; Glomerella; Liriope muscari; aesthetics; ambient temperature; anthracnose; ascospores; conidia; conidiomata; control methods; culture media; ethanol; flowers; fungi; humidity; leaves; morphs; mycelium; ornamental plants; perithecia; plastic bags; rifampicin; runoff; sclerotia; small fruits; sodium hypochlorite; solar radiation; tissues; winter; Tennessee
Abstract:
... Rohdea japonica (Asparagaceae: Japanese sacred lily) is an ornamental garden plant in the United States but is native to eastern Asia. The species is typically evergreen in warm growing areas but can be deciduous in colder climates, has inconspicuous flowers, and produces bright red berries that are persistent in winter. In May of 2016 and 2017, anthracnose-like, circular lesions with red borders ...
DOI:
10.1094/PDIS-03-18-0388-PDN

20. First Report of Alternaria alternata Causing Leaf Blight in Pistacia terebinthus in Spain

Author:
López-Moral, A.; Agustí-Brisach, C.; Raya-Ortega, M. C.; Roca, L. F.; Lovera, M.; Arquero, O.; Trapero, A.
Source:
Plant disease 2018 v.102 no.11 pp. 2374
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA-directed RNA polymerase; Juglans regia; Pistacia lentiscus; Pistacia terebinthus; Pistacia vera; Prunus dulcis; color; conidia; containers; culture media; drought tolerance; fungi; hosts; indigenous species; internal transcribed spacers; lactic acid; leaf blight; leaves; mycelium; nut crops; pathogenicity; pathogens; photoperiod; protocols; relative humidity; rootstocks; runoff; sodium hypochlorite; spraying; summer; tap water; tissues; Spain
Abstract:
... Pistacia terebinthus is a native plant from the western Mediterranean and abundant in Spain. It has been used as a rootstock of P. vera in the main growing regions of this crop in the world because it confers a degree of drought resistance (Gijón et al. 2009). In summer 2017, leaf blight symptoms were observed on P. terebinthus plants in a commercial nursery located in Almeria province (Andalusia ...
DOI:
10.1094/PDIS-02-18-0209-PDN

21. First Report of Boxwood Blight Caused by Calonectria pseudonaviculata in California

Author:
Blomquist, C. L.; Kosta, K. L.; Santos, P. F.; Rooney-Latham, S.
Source:
Plant disease 2018 v.102 no.11 pp. 2379
ISSN:
0191-2917
Subject:
Buxus sempervirens; Calonectria; autumn; blight; branches; conidia; conidiophores; culture media; defoliation; diagnostic techniques; dieback; genes; growth chambers; internal transcribed spacers; leaf spot; leaves; pathogenicity; peptide elongation factors; photoperiod; planting; rain; ribosomal DNA; sanitation; sodium hypochlorite; spring; tubulin; California
Abstract:
... Samples from 9-year-old boxwood (Buxus sempervirens ‘Suffruticosa’) plantings from a residential estate in San Mateo County were submitted to the California Department of Food and Agriculture Plant Pest Diagnostics Center Lab in December 2016. Partially to nearly completely defoliated plants were found in which many of the leaves had violet brown, water-soaked spots. Green stems that became gray a ...
DOI:
10.1094/PDIS-05-18-0765-PDN

22. First Report of Colletotrichum acutatum Causing Anthracnose on Rhododendron yedoense var. poukhanense in South Korea

Author:
Sultana, R.; Lee, K.-J.; Chae, J.-C.; Lee, S.-J.
Source:
Plant disease 2018 v.102 no.11 pp. 2371
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; DNA primers; Rhododendron; anthracnose; appressoria; branches; color; common names; conidia; culture media; databases; disease incidence; ethanol; etiology; financial economics; flowers; fungi; gardens; groves; growth chambers; humidity; internal transcribed spacers; necrosis; pathogenicity; petioles; photoperiod; phylogeny; plastic bags; polymerase chain reaction; sequence homology; shrubs; sodium hypochlorite; tissues; South Korea
Abstract:
... Rhododendron, a well-known ornamental genus belonging to the family Ericaceae, has been grown worldwide for over 200 years (Du et al. 2018; Liu et al. 2017). In South Korea, Rhododendron yedoense var. poukhanense (H. Lev.) Nakai (common name Korean azalea) is a widely cultivated deciduous shrub that blooms from April to May with light purple flowers. Disease symptoms in R. yedoense var. poukhanens ...
DOI:
10.1094/PDIS-01-18-0178-PDN

23. First Report of Colletotrichum acutatum Causing Flower Anthracnose on Pomegranate (Punica granatum) in Southern Brazil

Author:
Bellé, C.; Moccellin, R.; Souza-Júnior, I. T.; Maich, S. L. P.; Neves, C. G.; Nascimento, M. B.; Barros, D. R.
Source:
Plant disease 2018 v.102 no.11 pp. 2373
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; DNA; Punica granatum; actin; anthracnose; chitin synthase; conidia; culture dishes; culture media; ethanol; flowers; fungi; genes; glass; glyceraldehyde-3-phosphate dehydrogenase; hyphae; internal transcribed spacers; orchards; pathogenicity; photoperiod; pomegranates; relative humidity; sequence analysis; sodium hypochlorite; tubulin; Brazil
Abstract:
... Pomegranate (Punica granatum L.), a crop native to central Asia, has been cultivated in Brazil since the 1900s but has only recently become a commercial fruit crop (Watanabe and Oliveira 2014). In October 2017, typical symptoms of anthracnose were observed on pomegranate flowers (cv. Wonderful) in commercial orchards in Pelotas, Rio Grande do Sul state, Brazil. Initially, symptoms appeared as smal ...
DOI:
10.1094/PDIS-04-18-0599-PDN

24. First Report of Colletotrichum karstii Causing Anthracnose on Annona muricata in Brazil

Author:
Belisário, R.; Borges, L. S.; Furtado, G. Q.
Source:
Plant disease 2018 v.102 no.11 pp. 2372
ISSN:
0191-2917
Subject:
Annona crassiflora; Annona muricata; Bayesian theory; Carica papaya; Castanea; Colletotrichum; DNA; Eugenia uniflora; Malus domestica; Mangifera indica; Pachira aquatica; Vaccinium corymbosum; actin; anthracnose; apples; appressoria; calmodulin; chitin synthase; color; conidia; conidiomata; crops; culture media; dieback; ethanol; food industry; forest nurseries; fruits; fungal culture; genes; growth chambers; humidity; internal transcribed spacers; leaves; mangoes; mist irrigation; mycelium; pathogenicity; photoperiod; plant pathogens; plant tissues; probability; salmon; saplings; sodium hypochlorite; soursops; statistical analysis; tropics; Brazil
Abstract:
... Annona muricata L. (Annonaceae), commonly known as soursop, is an important crop for the food industry and possesses a wide spectrum of biological activities (Moghadamtousi et al. 2015). Colletotrichum species are major plant pathogens causing anthracnose on Annona spp. (Kamei et al. 2014). This is an important disease in tropical regions, causing severe soursop production losses every year (McMil ...
DOI:
10.1094/PDIS-04-18-0553-PDN

25. First Report of Ilyonectria robusta Causing Black Foot Disease of Grapevine in Spain

Author:
Martínez-Diz, M. P.; Díaz-Losada, E.; Armengol, J.; León, M.; Berlanas, C.; Andrés-Sodupe, M.; Gramaje, D.
Source:
Plant disease 2018 v.102 no.11 pp. 2381
ISSN:
0191-2917
Subject:
DNA; Neonectria; Vitis vinifera; anamorphs; biomass; chlorosis; cinnamon; conidia; cultivars; culture media; death; discoloration; financial economics; foot diseases; fungi; genes; grafting (plants); growth chambers; histones; industry; leaves; mycelium; necrosis; nucleotide sequences; pathogenicity; roots; rootstocks; seedlings; sequence analysis; sodium hypochlorite; streptomycin; sulfates; tap water; tissues; vigor; wood; Spain
Abstract:
... In June 2017, symptoms of black foot disease were observed on 2-year-old grapevines (Vitis vinifera L.) cultivar Malvasía grafted on 110 Richter rootstock and on 2-year-old grapevines cultivar Garnacha Tintorera grafted on 110 Richter rootstock in Mendavia (Navarra Province, northern Spain) and Requena (Valencia Province, eastern Spain), respectively. Affected plants showed delayed budding with lo ...
DOI:
10.1094/PDIS-05-18-0730-PDN

26. First Report of Anthracnose Caused by Colletotrichum spaethianum on Allium ledebourianum in India

Author:
Salunkhe, V. N.; Anandhan, S.; Gawande, S. J.; Ikkar, R. B.; Bhagat, Y. S.; Mahajan, V.; Singh, M.
Source:
Plant disease 2018 v.102 no.10 pp. 2031
ISSN:
0191-2917
Subject:
Allium fistulosum; Atractylodes; Colletotrichum; DNA primers; Hemerocallis; actin; agar; alfalfa; anthracnose; appressoria; chives; conidia; conidiomata; fungi; garlic; genes; glucose; glyceraldehyde-3-phosphate dehydrogenase; growth chambers; internal transcribed spacers; leaves; necrosis; oils; onions; pathogenicity; photoperiod; relative humidity; ribosomal DNA; sodium hypochlorite; wet season; Brazil; India
Abstract:
... Allium ledebourianum (Ledebour chive) is known for its culinary, medicinal, and ornamental properties. During the rainy season (June to September) of 2015 and 2016, symptoms similar to anthracnose were observed on 40 to 50% of A. ledebourianum plants in the wild allium repository at Indian Council of Agricultural Research–Directorate of Onion and Garlic Research, Rajgurunagar, Pune, India. Leaves ...
DOI:
10.1094/PDIS-01-18-0104-PDN

27. First Report of Colletotrichum truncatum Causing Anthracnose on the Berry Stalk and the Rachis of Kyoho Grape (Vitis labruscana × V. vinifera) Clusters in Hebei, China

Author:
Zhang, Y.; Xu, H.; Jiang, S.; Wang, F.; Ou, C.; Zhao, Y.; Ma, L.; Li, Y.
Source:
Plant disease 2018 v.102 no.10 pp. 2040
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; Colletotrichum capsici; Colletotrichum truncatum; Glomerella cingulata; Vitis labrusca; ambient temperature; anthracnose; blight; conidia; conidiomata; culture media; ethanol; field experimentation; fungi; genes; glyceraldehyde-3-phosphate dehydrogenase; grapes; hybrids; internal transcribed spacers; leaves; pathogenicity; pathogens; pedicel; phylogeny; plant tissues; plastic bags; relative humidity; shoots; small fruits; sodium hypochlorite; spraying; tubulin; vines; vineyards; China; India
Abstract:
... In July 2016, vines of Kyoho grape (Vitis labruscana × V. vinifera) grown in Hebei Province, China, exhibited black and dark brown blight on the pedicel of the berry (berry stalk) and the bunch stalk (rachis) of clusters during veraison. Although there was no symptom on the berries, the grape berries fell off very easily. The percentage of disease clusters in seriously affected vineyards can be as ...
DOI:
10.1094/PDIS-02-18-0275-PDN

28. First Report of Dactylonectria torresensis Causing Black-Foot Disease on Grapevines in the Czech Republic

Author:
Pečenka, J.; Eichmeier, A.; Peňázová, E.; Baránek, M.; León, M.; Armengol, J.
Source:
Plant disease 2018 v.102 no.10 pp. 2038
ISSN:
0191-2917
Subject:
Vitis; agar; air drying; autoclaving; bark; biomass; conidia; conidiophores; cultivars; culture media; financial economics; fungi; genes; greenhouses; growth retardation; histones; inoculum; leaves; mycelium; necrosis; nucleotide sequences; pathogenicity; peat; photoperiod; planting; plastic bags; root growth; roots; rootstocks; seeds; sodium hypochlorite; streptomycin; sulfates; tap water; vineyards; wheat; wood; Czech Republic
Abstract:
... In 2015, diseased grapevines, cultivar Sauvignon blanc on SO4 rootstock, were surveyed in a young vineyard in Lednice, South Morava, Czech Republic. One year after planting, 30% of plants showed characteristic symptoms of black-foot disease: necrotic root lesions, reduced root growth, and wood necrosis at the base of the rootstock. Bark was removed from affected parts of the rootstock and the root ...
DOI:
10.1094/PDIS-03-18-0411-PDN

29. First Report of Eutypa lata Causing Branch Dieback and Cankers on Cape Willow in South Africa

Author:
Moyo, P.; Mostert, L.; Dedekind, R.; van Jaarsveld, W. J.; Pierron, R.; Halleen, F.
Source:
Plant disease 2018 v.102 no.10 pp. 2033
ISSN:
0191-2917
Subject:
DNA primers; Eutypa lata; Salix; asci; ascospores; branches; chloramphenicol; conidia; culture media; dead wood; demonstration farms; dieback; discoloration; ethanol; fruit crops; fruit trees; fungi; genes; girdling; inoculum; internal transcribed spacers; mycelium; necrosis; orchards; pathogenicity; pathogens; perithecia; polymerase chain reaction; ribosomal DNA; shoots; sodium hypochlorite; streams; tissues; tubulin; vineyards; wood; South Africa
Abstract:
... The Cape willow (Salix mucronata Thun.), a member of the Salicaceae, is a widespread and evergreen tree that grows along streams and river banks in South Africa (Burtt Davy 1922). Between April 2014 and December 2015, several willow trees in close proximity to vineyards in the Western Cape Province of South Africa were observed to be affected by twig and whole branch dieback as well as girdling ca ...
DOI:
10.1094/PDIS-03-18-0398-PDN

30. First Report of Lasiodiplodia gilanensis Causing Twig and Leaf Blight on Machilus thunbergii in Zhejiang Province of China

Author:
Li, L.; Shi, H.; Zhang, S.; Hu, T.; Wang, J.; Zhang, C.; Xu, Z.
Source:
Plant disease 2018 v.102 no.10 pp. 2029
ISSN:
0191-2917
Subject:
DNA; DNA fragmentation; DNA primers; Lasiodiplodia; Machilus; branches; broadleaved evergreens; cetyltrimethylammonium bromide; climate; conidia; conidiophores; cortex; culture media; endangered species; ethanol; genes; hyphae; leaf blight; leaves; melanin; mycelium; national forests; pathogenicity; pathogens; peptide elongation factors; photoperiod; pistachios; polymerase chain reaction; pomegranates; pycnidia; relative humidity; sodium hypochlorite; soil conservation; trees; tubulin; California; China
Abstract:
... Machilus thunbergii Sieb. et Zucc. (Lauraceae) is a broad-leaved evergreen tree and an endangered species in warm-temperate and subtropical areas of China. It also has high ornamental, timber-use, and soil-conservation functions. In recent years, brown to dark-brown lesions were found on leaves or on twigs of M. thunbergii, which caused decay of the cortex. We first found this disease on about 30% ...
DOI:
10.1094/PDIS-11-17-1711-PDN

31. First Report of Leaf Spot of Spinach Caused by Stemphylium beticola in Italy

Author:
Gilardi, G.; Franco-Ortega, S.; Gullino, M. L.; Garibaldi, A.
Source:
Plant disease 2018 v.102 no.10 pp. 2036
ISSN:
0191-2917
Subject:
Spinacia oleracea; Stemphylium; agar; air temperature; autumn; calcium carbonate; conidia; crocodiles; cultivars; cultivation area; culture media; fluorescent lighting; foliar diseases; fungi; genomics; growth chambers; intergenic DNA; internal transcribed spacers; leaf spot; leaves; models; pathogenicity; piedmont; polymerase chain reaction; relative humidity; ribosomal RNA; sequence analysis; sodium hypochlorite; spinach; spraying; spring; statistical analysis; Italy
Abstract:
... During the spring and autumn of 2017, 40-day-old spinach (Spinacia oleracea L.) plants, cultivar Crocodile, grown in a commercial field in the Asti province in Piedmont (Northern Italy), showed symptoms of a previously unknown foliar disease. The first symptoms developed at air temperatures ranging from 10 to 22°C. Five to 25% of plants showed small circular, yellow to pale brown leaf spots (1 to ...
DOI:
10.1094/PDIS-02-18-0265-PDN

32. First Report of Sudden Death Syndrome of Soybean Caused by Fusarium virguliforme in New York

Author:
Cummings, J. A.; Myers, K. L.; Bergstrom, G. C.
Source:
Plant disease 2018 v.102 no.10 pp. 2036
ISSN:
0191-2917
Subject:
Fusarium virguliforme; Glycine max; ambient temperature; chlorosis; conidia; crop production; cultivars; culture media; death; developmental stages; discoloration; disease resistance; ethanol; genes; genetic databases; greenhouses; growers; growing season; leaves; neomycin; nucleotide sequences; pathogenicity; peptide elongation factors; photoperiod; planting; potting mix; roots; rye; sand; saturated conditions; seed treatment; seeds; sequence analysis; sodium hypochlorite; soybean sudden death syndrome; soybeans; species identification; streptomycin; tissues; weather; Michigan; New York
Abstract:
... Sudden death syndrome (SDS) of soybean (Glycine max [L.] Merr.), incited by Fusarium virguliforme Aoki, O’Donnell, Homma, & Lattanzi, is an economically important disease found in many soybean production regions of the United States (Aoki et al. 2003). This disease can be a major contributor to yield loss in years with conducive weather conditions (Hartman et al. 2015). In late August of the 2017 ...
DOI:
10.1094/PDIS-02-18-0304-PDN

33. First Report of Willow Anthracnose Caused by Colletotrichum salicis in Poland

Author:
Okorski, A.; Pszczółkowska, A.; Sulima, P.; Paukszto, Ł.; Jastrzębski, J. P.; Przyborowski, J.; Makowczenko, K. G.
Source:
Plant disease 2018 v.102 no.10 pp. 2036
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; DNA; DNA libraries; Salix purpurea; anthracnose; bark; binding proteins; conidia; culture media; cytochrome-c oxidase; discoloration; energy crops; ethanol; fungi; glutathione synthase; greenhouse experimentation; heat shock proteins; high-throughput nucleotide sequencing; hybrids; microscopy; mycelium; necrosis; pathogenicity; pathogens; photoperiod; plantations; quantitative polymerase chain reaction; quinones; seedlings; shoots; sodium hypochlorite; temperature; ubiquitin-protein ligase; ultraviolet radiation; Poland
Abstract:
... Growing interest in willow species of the genus Salix as a bioenergy crop has contributed to an increase in willow plantations in Poland (Sulima et al. 2017). In June 2016, terminal bud necrosis was observed in a willow plantation (Salix purpurea, S. vinimalis × S. schwerini) near Olsztyn (Poland). Brown to black discoloration of willow bark at a height of 150 to 170 cm and progressive necrosis of ...
DOI:
10.1094/PDIS-12-17-2023-PDN

34. Spot Blight on Tobacco (Nicotiana tabacum) Caused by Stagonosporopsis cucurbitacearum in Guizhou Province of China

Author:
Wang, H.; Zhou, H.; Yu, Z.-H.; Zhang, Z.-F.; Chen, X.; Cai, L.-T.
Source:
Plant disease 2018 v.102 no.10 pp. 2030
ISSN:
0191-2917
Subject:
Didymella bryoniae; Ipomoea aquatica; Nicotiana tabacum; Siraitia grosvenorii; agar; asci; ascospores; blight; conidia; cultivars; culture media; ethanol; fungal morphology; fungi; host plants; internal transcribed spacers; leaf spot; leaves; pathogenicity; perithecia; polymerase chain reaction; relative humidity; ribosomal DNA; sequence analysis; sodium hypochlorite; tissues; tobacco; tubulin; wilting; China
Abstract:
... Tobacco (Nicotiana tabacum L.) is a leafy, annual, solanaceous plant grown commercially for its leaves. China accounts for approximately 40% of the global tobacco production. In August 2017, small (2 to 8 mm in diameter) water-soaked lesions were observed on the leaves of tobacco cultivar Yunyan 85 in Zheng’an (Guizhou, China, 28.56 N, 107.43 E). Subsequently, the affected areas turned tan-colored ...
DOI:
10.1094/PDIS-11-17-1793-PDN

35. First Report of Cladosporium cladosporioides Causing Leaf Spot on Alstroemeria aurea in Brazil

Author:
Meneses, P. R.; Dorneles, K. R.; Belle, C.; Moreira-Nuñez, V. L.; Gonçalves, V.; de Farias, C. R. J.
Source:
Plant disease 2018 v.102 no.9 pp. 1849
ISSN:
0191-2917
Subject:
Alstroemeria aurea; Antirrhinum majus; Carya illinoinensis; Cladosporium cladosporioides; DNA; Dahlia pinnata; Lilium; Solanum lycopersicum var. lycopersicum; actin; conidia; conidiophores; control methods; culture media; flowers; fungal diseases of plants; genes; greenhouses; herbaria; hosts; internal transcribed spacers; leaf spot; leaves; oligodeoxyribonucleotides; pathogenicity; peptide elongation factors; plant pathogenic fungi; plant pathology; plastic bags; sequence analysis; sodium hypochlorite; solar radiation; spraying; texture; translation (genetics); Brazil
Abstract:
... Alstroemeria aurea is a flowering plant that belongs to the family Alstroemeriaceae. It is commonly grown and commercialized as a flower-of-court and is appreciated for its beautiful flowers. In September 2017, symptoms of leaf spot were observed on A. aurea (cv. Puccini) at a commercial flower-production plant in Pelotas, Rio Grande do Sul state, Brazil. Initially, the symptoms appeared as small ...
DOI:
10.1094/PDIS-01-18-0106-PDN

36. First Report of Colletotrichum gloeosporioides Causing Anthracnose of Tejocote (Crataegus gracilior) Fruits in Mexico

Author:
Nieto-López, E. H.; Everhart, S. E.; Ayala-Escobar, V.; Camacho-Tapia, M.; Lima, N. B.; Nieto-Angel, R.; Tovar-Pedraza, J. M.
Source:
Plant disease 2018 v.102 no.9 pp. 1855
ISSN:
0191-2917
Subject:
Bayesian theory; Colletotrichum; Crataegus; Glomerella cingulata; anthracnose; appressoria; autumn; conidia; culture media; fruits; genes; glyceraldehyde-3-phosphate dehydrogenase; internal transcribed spacers; mycelium; orchards; pathogenicity; phylogeny; plant pathogenic fungi; polymerase chain reaction; pome fruits; salmon; sodium hypochlorite; tubulin; Mexico
Abstract:
... Crataegus is a genus classified in family Rosaceae and includes several tree species commonly called tejocote that are widely cultivated for their pome fruits in Mexico. During fall of 2014, 2015, and 2016, severe symptoms of anthracnose were observed on approximately 60% of tejocote (Crataegus gracilior) fruits in an orchard located in Tulancingo, Oaxaca, Mexico. Affected fruits showed sunken, pr ...
DOI:
10.1094/PDIS-02-18-0233-PDN

37. First Report of Colletotrichum truncatum Causing Anthracnose in Tomato Fruit in Trinidad

Author:
Villafana, R. T.; Ramdass, A. C.; Rampersad, S. N.
Source:
Plant disease 2018 v.102 no.9 pp. 1857
ISSN:
0191-2917
Subject:
Colletotrichum truncatum; DNA; Solanum lycopersicum; actin; alternative hosts; anthracnose; chloramphenicol; conidia; cross infection; culture media; ethanol; fruits; fungal growth; fungicides; genes; internal transcribed spacers; mycelium; pathogenicity; pathogens; sequence analysis; sodium hypochlorite; streptomycin; sulfates; sweet peppers; tetracycline; tomatoes; tubulin; China; India; Trinidad and Tobago
Abstract:
... In Trinidad, tomato (Solanum lycopersicum L.) is an economically important crop that is produced year-round in several growing regions including Aranguez, Orange Grove, Macoya, Caroni, and Penal. From August to November 2017, tomato fruits with symptoms typical of anthracnose infection were reported in fields located in the major growing area of Aranguez in North Trinidad. Infected fruits had symp ...
DOI:
10.1094/PDIS-02-18-0319-PDN

38. First Report of Common Bean (Phaseolus vulgaris) Root Rot Caused by Plectosphaerella cucumerina in China

Author:
Yang, L.; Lu, X. H.; Li, S. D.; Wu, B. M.
Source:
Plant disease 2018 v.102 no.9 pp. 1849
ISSN:
0191-2917
Subject:
Phaseolus vulgaris; Plectosphaerella; aerial parts; beans; commercial farms; conidia; crop production; crops; cultivars; culture media; fungi; greenhouses; hyphae; internal transcribed spacers; mycelium; oligodeoxyribonucleotides; pathogenicity; pathogens; photoperiod; ribosomal DNA; root rot; roots; seeds; sodium hypochlorite; soil; tissues; trays; wheat; China
Abstract:
... In March 2016, root rot was observed on common bean (Phaseolus vulgaris L.) samples (cultivar Shuangqing 38) collected from a commercial farm in Sanya City, Hainan Province, China. The incidence of this disease in the field was about 30%. The symptoms of infected plants included dwarf and yellowing aboveground; irregular, scaled, black-brown lesions on roots; and lack of lateral roots. Symptomatic ...
DOI:
10.1094/PDIS-10-17-1659-PDN

39. First Report of Curvularia asianensis Causing Leaf Blotch of Epipremnum pinnatum in Guangxi Autonomous Region of China

Author:
Wang, Y.; Pan, X.-J.; Zhang, Q.; Zhao, De-Gang
Source:
Plant disease 2018 v.102 no.9 pp. 1854
ISSN:
0191-2917
Subject:
Curvularia; DNA primers; Epipremnum pinnatum; Panicum; conidia; conidiophores; culture media; ethanol; fungi; genes; genetic databases; glyceraldehyde-3-phosphate dehydrogenase; internal transcribed spacers; leaf blotch; leaves; mycelium; pathogenicity; peptide elongation factors; phylogeny; polymerase chain reaction; sodium hypochlorite; tissues; translation (genetics); China; Thailand
Abstract:
... Epipremnum pinnatum Engl. is a flowering plant in the family Araceae. In southern China, it is often cultivated for medicinal and ornamental purposes. A distinct leaf blotch was observed on E. pinnatum in October 2017. Symptoms included gray or tan irregular blotches, with reddish to yellow margins. Portions of the symptomatic leaves were surface sterilized in 70% ethanol for 30 s and then in 2% N ...
DOI:
10.1094/PDIS-01-18-0145-PDN

40. First Report of Curvularia Leaf Spot of Rose in Pakistan

Author:
Abbas, M. F.; Aziz-ud-Din,; Rashid, A.; Ghanzafar, M. U.; Qamar, M. I.; Andleeb, S.; Qadir, A.; Khan, F. F.; Batool, S.
Source:
Plant disease 2018 v.102 no.9 pp. 1858
ISSN:
0191-2917
Subject:
Curvularia lunata; Rosa; cities; conidia; conidiophores; costs and returns; crop year; culture media; disease control; essential oils; farmers; glass; herbal tea; internal transcribed spacers; leaf spot; leaves; pathogens; perfumes; relative humidity; ribosomal DNA; sodium hypochlorite; syrups; Pakistan
Abstract:
... In Pakistan, rose is cultivated for ornamental purposes, and it is also a key component of essential oils, rose syrup, perfumes, and herbal tea. During the crop year 2015 to 2016, leaf spots (3 to 4 mm in diameter) were observed on rose leaves in the cities of Rawalpindi and Islamabad. Excised segments (3 mm²) from 20 infected leaves were surface sterilized with 1% sodium hypochlorite for 2 min an ...
DOI:
10.1094/PDIS-02-18-0239-PDN

41. First Report of Fruit Blight Caused by Arthrinium xenocordella on Pistacia vera in Italy

Author:
Aiello, D.; Gulisano, S.; Gusella, G.; Polizzi, G.; Guarnaccia, V.
Source:
Plant disease 2018 v.102 no.9 pp. 1853
ISSN:
0191-2917
Subject:
Pistacia vera; barley; blight; conidia; culture media; discoloration; endocarp; fluorescent lighting; fungi; genes; internal transcribed spacers; mycelium; orchards; pathogenicity; plant pathogens; relative humidity; ribosomal DNA; seeds; sodium hypochlorite; soil; spraying; streptomycin; sulfates; tissues; tubulin; wheat; Central Asia; Italy; Middle East; Sicily; Zimbabwe
Abstract:
... Pistacia vera L. is a nut tree native to Central Asia and the Middle East widely cultivated in Sicily, Italy. In July 2017, a new disease was observed on approximately 450, 70-year-old P. vera plants (var. Bianca), in a commercial orchard in Western Sicily (Agrigento Province), Italy. More than 30% of the fruits showed disease symptoms. The initial symptom was external brown discoloration on the e ...
DOI:
10.1094/PDIS-02-18-0290-PDN

42. First Report of Fruit Rot of Watermelon Caused by Fusarium equiseti in China

Author:
Li, Y. G.; Song, X. L.; Wang, X. Q.; Zhang, H.; Tian, S.; Ji, P.
Source:
Plant disease 2018 v.102 no.9 pp. 1852
ISSN:
0191-2917
Subject:
Citrullus lanatus; DNA; DNA primers; Fusarium equiseti; chlamydospores; conidia; cultivars; culture media; disease control; ethanol; fruits; fungi; genes; growth chambers; hyphae; mycelium; nucleotide sequences; peptide elongation factors; pigments; plant rots; polymerase chain reaction; relative humidity; sodium hypochlorite; soil; tissues; translation (genetics); watermelons; China; Georgia
Abstract:
... Watermelon (Citrullus lanatus T.) is an economically important fruit crop in China. In September 2017, fruit rot was observed on watermelon fruits in Harbin, Heilongjiang Province, China. The disease occurred on approximately 5% of watermelon fruits in two commercial fields (3 ha), located about 5 km apart. Initial symptoms were brown water-soaked lesions on the fruit side in contact with soil, wh ...
DOI:
10.1094/PDIS-01-18-0199-PDN

43. First Report of Fusarium Stem Canker on Pyrularia pubera, a Rare Native Parasitic Shrub in Forests of Southwestern Pennsylvania

Author:
Wickert, K. L.; Metheny, A. M.; Davis, D. D.; Geiser, D. M.; Wenzel, J. W.; Planinsek, D.; Kasson, M. T.
Source:
Plant disease 2018 v.102 no.9 pp. 1852
ISSN:
0191-2917
Subject:
Carya cordiformis; Fusarium solani; Robinia; agar; conidia; conservation areas; databases; dendrochronology; dieback; forests; fungi; glucose; growth rings; hosts; leaves; mycelium; parasitic plants; pathogenicity; peptide elongation factors; phylogeny; rare species; shrubs; sodium hypochlorite; sporodochia; sprouting; statistical analysis; stem cankers; stems; surveys; wood; yeast extract; Pennsylvania
Abstract:
... Pyrularia pubera Michx. (buffalo nut; Cervantesiaceae/Santales) is a parasitic shrub native to the eastern United States (Nickrent et al. 2010). More than 60 plant species in 31 families have been recorded as hosts (Leopold and Muller 1983). At its northern range limit in Pennsylvania, P. pubera is classified as rare (Randle and Wenzel 2014). In June 2015, extensive dieback of dozens of Pyrularia ...
DOI:
10.1094/PDIS-01-18-0135-PDN

44. First Report of Neopestalotiopsis clavispora Causing Root and Crown Rot on Strawberry Plants in Argentina

Author:
Obregón, V. G.; Meneguzzi, N. G.; Ibañez, J. M.; Lattar, T. E.; Kirschbaum, D. S.
Source:
Plant disease 2018 v.102 no.9 pp. 1856
ISSN:
0191-2917
Subject:
DNA primers; Fragaria ananassa; Neopestalotiopsis clavispora; appendages; color; conidia; crown rot; culture media; death; discoloration; ethanol; field crops; fungi; greenhouses; humidity; internal transcribed spacers; leaf spot; leaves; mycelium; pathogenicity; plastic bags; roots; sodium hypochlorite; strawberries; Argentina; China; Spain
Abstract:
... Argentina cultivates ≈1,300 ha of strawberries (Fragaria × ananassa Duch.) and produces ≈45,500 t year-round, especially in the provinces of Corrientes and Tucuman, two of the major strawberry production areas of the country (Kirschbaum et al. 2017). Since August 2013, severe damage has been observed on strawberry plants from commercial production fields, in the northern provinces of Corrientes (B ...
DOI:
10.1094/PDIS-02-18-0330-PDN

45. Fusarium proliferatum: A New Pathogen Causing Fruit Rot of Peach in Ningde, China

Author:
Xie, S. H.; Zhang, C.; Chen, M. S.; Wei, Z. P.; Jiang, Y. B.; Lin, X.; Zheng, Y. Q.
Source:
Plant disease 2018 v.102 no.9 pp. 1858
ISSN:
0191-2917
Subject:
DNA; Fusarium proliferatum; Prunus persica; conidia; crop yield; culture media; fruits; growth chambers; microscopy; mycelium; oligodeoxyribonucleotides; orchards; pathogenicity; pathogens; peaches; peptide elongation factors; photoperiod; pigments; plant rots; planting; plastic bags; polymerase chain reaction; relative humidity; sequence analysis; sodium hypochlorite; streptomycin; sulfates; tissues; China
Abstract:
... Peach (Prunus persica L.) is an economically important tree fruit crop worldwide. China’s planting area and yield of peaches are the first in the world (Verde et al. 2013). During June to July 2017, losses of at least 20% associated with fruit rot of peaches (cv. Zhongtao No. 5) were observed in several commercial orchards of Ningde, Fujian Province (26.67°N, 119.52°E). Affected fruit showed water ...
DOI:
10.1094/PDIS-01-18-0103-PDN

46. Detection of Alternaria alternata Causing Leaf Spot on Rumex obtusifolius in Southern Brazil

Author:
Moccellin, R.; Bellé, C.; Kaspary, T. E.; Groth, M. Z.; Rohrig, B.; Cutti, L.; Casarotto, G.
Source:
Plant disease 2018 v.102 no.8 pp. 1656
ISSN:
0191-2917
Subject:
Alternaria alternata; Citrus; DNA primers; DNA-directed RNA polymerase; Rumex obtusifolius; apples; beak; conidia; conidiophores; crop yield; culture media; genes; glyceraldehyde-3-phosphate dehydrogenase; grasslands; growth chambers; hyphae; internal transcribed spacers; leaf spot; leaves; mycelium; nutritive value; pathogenicity; pathogens; peptide elongation factors; perennial weeds; plastic bags; polymerase chain reaction; relative humidity; rice; sodium hypochlorite; soybeans; sugarcane; translation (genetics); wheat; Brazil; Europe
Abstract:
... Rumex obtusifolius L., commonly known as bitter or butter dock, is a perennial weed belonging to the family Polygonaceae, which is native to Brazil and Europe. This weed infests grassland and crop field areas where rice, sugarcane, soybean, wheat, apple, and citrus grows. It decreases crop yield and reduces the forage feeding value of grasslands (Marten et al. 1987; Zaller 2004). In September 2016 ...
DOI:
10.1094/PDIS-12-17-2038-PDN

47. First Report of a Leaf Spot Caused by Paramyrothecium roridum on Tectona grandis in Brazil

Author:
Borges, R. C. F.; Rossato, M.; Santos, M. D. M.; Ferreira, M. A.; Fonseca, M. E. N.; Reis, A.; Boiteux, L. S.
Source:
Plant disease 2018 v.102 no.8 pp. 1661
ISSN:
0191-2917
Subject:
Coffea; DNA; DNA primers; Myrothecium roridum; Tectona grandis; alcohols; cetyltrimethylammonium bromide; clones; conidia; conidiophores; culture media; databases; deciduous forests; defoliation; disinfection; fungi; host range; hosts; internal transcribed spacers; leaf spot; leaves; microscopy; mycelium; pathogens; plant growth; polymerase chain reaction; seedlings; sodium hypochlorite; sporodochia; spraying; timber production; tissues; Brazil; Taiwan
Abstract:
... Tectona grandis Lf (teak) is a deciduous forest species with increasing economic importance in timber production in subequatorial Brazil. In August 2016, circular dark brown leaf spots (ranging 1 to 20 mm in diameter) with well-defined edges were found mainly in seedlings of commercial production areas in Cáceres, Mato Grosso State, Brazil. The lesions often induced defoliation, as well as slower ...
DOI:
10.1094/PDIS-09-17-1364-PDN

48. First Report of Alternaria alternata Causing Fruit Rot of Grapes in Pakistan

Author:
Ghuffar, S.; Irshad, G.; Shahid, M.; Naz, F.; Riaz, A.; Khan, M. A.; Mehmood, N.; Sattar, A.; Asadullah, H. M.; Gleason, M. L.
Source:
Plant disease 2018 v.102 no.8 pp. 1659
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA primers; DNA-directed RNA polymerase; Vitis vinifera; ambient temperature; conidia; conidiophores; culture media; fruits; fungi; genes; genetic databases; internal transcribed spacers; mycelium; packing houses; pathogenicity; plant rots; polygalacturonase; polymerase chain reaction; postharvest storage; small fruits; sodium hypochlorite; storage temperature; surveys; table grapes; Pakistan; Slovakia; South Africa
Abstract:
... In July 2016, a severe fruit rot was observed on table grapes (Vitis vinifera) from five different fruit packing houses in the Rawalpindi district (33°38′19.2″N, 73°01′45.0″E) of Punjab province, Pakistan. During the survey, dark gray to black mycelium was observed on the surface of the berries and rapidly expanded to entire bunches. After 3 to 5 days of postharvest storage at ambient temperature, ...
DOI:
10.1094/PDIS-01-18-0096-PDN

49. First Report of Botryosphaeria dothidea Causing Fruit Rot of Rellowhorn (Xanthoceras sorbifolium) in China

Author:
Liu, X.; Liu, H. X.; Han, X. L.; Zhang, Y. L.; Liang, Q.; Li, S. K.; Yang, K. Q.
Source:
Plant disease 2018 v.102 no.8 pp. 1662
ISSN:
0191-2917
Subject:
Botryosphaeria dothidea; DNA primers; Fusicoccum; Xanthoceras sorbifolium; anamorphs; biodiesel; conidia; culture media; fruits; fuel production; genes; internal transcribed spacers; mycelium; oils; orchards; pathogenicity; pathogens; peptide elongation factors; phylogeny; plant rots; pycnidia; relative humidity; ribosomal DNA; ribosomal RNA; seeds; shrubs; sodium hypochlorite; tap water; trees; China
Abstract:
... Yellowhorn (Xanthoceras sorbifolium Bunge) is a woody deciduous shrub that produces capsular fruits with seeds rich in oil and it has also been widely cultivated for biodiesel production in northern China (Venegas-Calerón et al. 2017; Wang et al. 2017). Beginning in June 2015, a rot of yellowhorn that severely reduced fruit production was observed in Weifang City, Shandong Province, China. Typical ...
DOI:
10.1094/PDIS-11-17-1769-PDN

50. First Report of Fusarium petroliphilum Causing Fruit Rot of Butternut Squash in Spain

Author:
González, V.; Armengol, J.; Garcés-Claver, A.
Source:
Plant disease 2018 v.102 no.8 pp. 1662
ISSN:
0191-2917
Subject:
Cucurbita ficifolia; Cucurbita moschata; Fusarium solani; agar; agitation; biofilm; conidia; culture media; databases; fields; fruits; fungi; genes; growth chambers; internal transcribed spacers; keratitis; mycelium; oligodeoxyribonucleotides; pathogenicity; peptide elongation factors; photoperiod; plant rots; postharvest losses; potatoes; rootstocks; seedlings; sodium hypochlorite; sporodochia; squashes; storage conditions; streptomycin; sucrose; sulfates; tissues; trays; watermelons; Spain
Abstract:
... Severe fruit rot of butternut squash (Cucurbita moschata Duchesne), a fruit widely consumed and cultivated in Spain, was observed in 2016 in cultivated fields and at storage conditions in Valencia Province (southeast Spain). Fruits exhibited sunken lesions that eventually extended into the flesh and led to 10 to 20% postharvest losses. Small (3 to 4 mm) pieces of rotted tissues were surface disinf ...
DOI:
10.1094/PDIS-11-17-1740-PDN