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You searched for: Journal name Plant disease Remove constraint Journal name: Plant disease Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Source 2019 v.103 no.7 Remove constraint Source: 2019 v.103 no.7
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1. African Nightshade and African Spinach Decrease Root-Knot Nematode and Potato Cyst Nematode Soil Infestation in Kenya

Author:
Oliver Chitambo; Solveig Haukeland; Komi K. M. Fiaboe; Florian M. W. Grundler
Source:
Plant disease 2019 v.103 no.7 pp. 1621-1630
ISSN:
0191-2917
Subject:
Amaranthus cruentus; Amaranthus dubius; Globodera; Heterodera; Meloidogyne; Solanum lycopersicum; Solanum scabrum; Solanum tuberosum; Solanum villosum; cropping systems; cyst nematodes; females; field experimentation; income; mixed infection; nutrition; potatoes; rhizosphere; root galls; root-knot nematodes; roots; soil; spinach; surveys; wilting; Kenya
Abstract:
... Plant-parasitic nematodes, particularly root-knot nematodes (RKN: Meloidogyne spp.) and cyst nematodes (CN: Globodera and Heterodera spp.) cause severe yield reduction in most cultivated crops and are of high economic importance. African nightshade (Solanum spp.) and African spinach (Amaranthus spp.) are important African indigenous vegetables (AIV) and are rich sources of nutrition and income. Ho ...
DOI:
10.1094/PDIS-07-18-1193-RE

2. Biological, Pathological, and Molecular Characteristics of a New Potyvirus, Dendrobium Chlorotic Mosaic Virus, Infecting Dendrobium Orchid

Author:
Chih-Hung Huang; Chia-Hsing Tai; Ruey-Song Lin; Chung-Jan Chang; Fuh-Jyh Jan
Source:
Plant disease 2019 v.103 no.7 pp. 1605-1612
ISSN:
0191-2917
Subject:
Dendrobium; Potyvirus; Western blotting; amino acid sequences; antiserum; coat proteins; enzyme-linked immunosorbent assay; genes; monoclonal antibodies; nucleotide sequences; nucleotides; pathogenicity; polyclonal antibodies; polyproteins; proteolysis; sequence analysis; viruses; Taiwan
Abstract:
... Dendrobium smillieae is one of the popular orchids in Taiwan. This report describes a new potyvirus tentatively named Dendrobium chlorotic mosaic virus (DeCMV) causing chlorotic and mosaic symptoms in D. smillieae. Enzyme-linked immunosorbent assay (ELISA) tests using six antisera against orchid-infecting viruses revealed that only a monoclonal antibody against the potyvirus group reacted positive ...
DOI:
10.1094/PDIS-10-18-1839-RE

3. Characterization of Botrytis cinerea From Commercial Cut Flower Roses

Author:
M. Muñoz; J. E. Faust; G. Schnabel
Source:
Plant disease 2019 v.103 no.7 pp. 1577-1583
ISSN:
0191-2917
Subject:
Alternaria alternata; Aspergillus niger; Botrytis cinerea; Cladosporium cladosporioides; Diplodia; Epicoccum nigrum; Penicillium citrinum; Rosa; boscalid; chemical treatment; corolla; cut flowers; cyprodinil; disease control; disease incidence; fenhexamid; financial economics; fludioxonil; fluopyram; fungi; fungicide resistance; gray mold; greenhouse production; greenhouses; iprodione; leaves; penthiopyrad; phenotype; plant ovary; resistance management; species diversity; taxonomy; thiophanate-methyl; tissues; Colombia
Abstract:
... Botrytis cinerea Pers. infects cut flower roses (Rosa × hybrida L.) during greenhouse production and gray mold symptoms are often expressed in the postharvest environment, resulting in significant economic losses. Disease management is based on cultural practices and preventative chemical treatments; however, gray mold outbreaks continue to occur. Rose tissues from six commercial shipments from tw ...
DOI:
10.1094/PDIS-09-18-1623-RE

4. Comparative Performance of Fungicides, Biofungicides, and Host Plant Defense Inducers in Suppression of Phytophthora Root Rot in Flowering Dogwood During Simulated Root Flooding Events

Author:
Matthew S. Brown; Fulya Baysal-Gurel; Jason B. Oliver; Karla M. Addesso
Source:
Plant disease 2019 v.103 no.7 pp. 1703-1711
ISSN:
0191-2917
Subject:
Cornus florida subsp. florida; Phytophthora cinnamomi; biopesticides; crop losses; disease severity; fungicides; greenhouse experimentation; growers; host plants; plant growth; plant height; root rot; root systems; roots; seedlings; soil water; water content
Abstract:
... During flooding events in nurseries, Phytophthora root rot caused by Phytophthora cinnamomi Rands often causes damage that leads to complete crop loss. In this study, we evaluated the efficacy of fungicides, biofungicides, and host plant defense inducers for preventive and curative control of Phytophthora root rot on flowering dogwood (Cornus florida L.) seedlings exposed to a simulated flood even ...
DOI:
10.1094/PDIS-09-18-1597-RE

5. Discovery of a Root-Lesion Nematode, Pratylenchus scribneri, Infecting Corn in Inner Mongolia, China

Author:
Y. Li; Q. S. Lu; S. Wang; Y. K. Liu; K. Wang; H. X. Yuan; H. L. Li
Source:
Plant disease 2019 v.103 no.7 pp. 1792
ISSN:
0191-2917
Subject:
DNA primers; Pratylenchus scribneri; Zea mays; adults; body length; carrots; corn; females; genes; greenhouses; males; molecular cloning; nitrogen; population density; proteinases; rearing; ribosomal RNA; root lesion nematodes; roots; sequence analysis; soil; soil sampling; soil sterilization; species identification; streptomycin; stylets; sulfates; tail; China
Abstract:
... Corn (Zea mays L.) is one of the most important crops in China, with over 34.94 million hectares cultivated annually (Li et al. 2014). The root-lesion nematode, Pratylenchus scribneri Steiner, 1943, is an important plant-parasitic nematode that invades roots of many crops. In August 2017, five root and soil samples were collected in a corn field in Chifeng city of Inner Mongolia, China. The sample ...
DOI:
10.1094/PDIS-11-18-2096-PDN

6. The Effect of Leaf Wetness on Phytophthora ramorum Zoospore Infection of Rhododendron ‘Cunningham’s White’ and Viburnum tinus

Author:
Paul W. Tooley; Marsha Browning
Source:
Plant disease 2019 v.103 no.7 pp. 1651-1656
ISSN:
0191-2917
Subject:
Phytophthora ramorum; Rhododendron; Viburnum tinus; dew; drying; hosts; inoculum; leaf wetness; leaves; pathogenicity; zoospores
Abstract:
... We performed studies using zoospore inoculum combined from nine isolates of Phytophthora ramorum and determined the effect of leaf wetness on infection of whole plants of Rhododendron ‘Cunningham’s White’ and Viburnum tinus. The mean percentage of infected leaves for both host species increased gradually across a dew chamber moisture period of 1 to 6 h, reaching approximately 80% infection by 6 h. ...
DOI:
10.1094/PDIS-09-18-1681-RE

7. Effect of Planting Date and Inoculum Density on Severity of Fusarium Wilt of Lettuce in California

Author:
Kelley R. Paugh; Thomas R. Gordon
Source:
Plant disease 2019 v.103 no.7 pp. 1498-1506
ISSN:
0191-2917
Subject:
Fusarium oxysporum f. sp. lactucae; Fusarium wilt; Lactuca sativa; cultivars; inoculum density; lettuce; planting date; soil; temperature; California
Abstract:
... Seven lettuce cultivars were transplanted into a field infested with Fusarium oxysporum f. sp. lactucae (causal agent of Fusarium wilt of lettuce) in August and September of 2014, 2015, and 2016. For moderately susceptible cultivars, 1- or 2-week differences in planting date had a significant effect on severity of Fusarium wilt. In growth chamber experiments, cultivars of moderate susceptibility w ...
DOI:
10.1094/PDIS-09-18-1614-RE

8. Effect of Seed Treatment and Foliar Crop Protection Products on Sudden Death Syndrome and Yield of Soybean

Author:
Yuba R. Kandel; Carl A. Bradley; Martin I. Chilvers; Febina M. Mathew; Albert U. Tenuta; Damon L. Smith; Kiersten A. Wise; Daren S. Mueller
Source:
Plant disease 2019 v.103 no.7 pp. 1712-1720
ISSN:
0191-2917
Subject:
Chenopodium quinoa; Fusarium virguliforme; citric acid; crop yield; cultivars; economic sustainability; field experimentation; fluopyram; fluoxastrobin; foliar application; foliar diseases; lactofen; plant protection; planting; risk; root rot; saponins; seed treatment; soil-borne diseases; soybeans; thiabendazole; Illinois; Indiana; Iowa; Michigan; Ontario; South Dakota; Wisconsin
Abstract:
... Sudden death syndrome (SDS), caused by Fusarium virguliforme, is an important soilborne disease of soybean. Risk of SDS increases when cool and wet conditions occur soon after planting. Recently, multiple seed treatment and foliar products have been registered and advertised for management of SDS but not all have been tested side by side in the same field experiment at multiple field locations. In ...
DOI:
10.1094/PDIS-12-18-2199-RE

9. Effects of the Endophytic Bacteria Bacillus cereus BCM2 on Tomato Root Exudates and Meloidogyne incognita Infection

Author:
Xia Li; Hai-Jing Hu; Jing-Yu Li; Cong Wang; Shuang-Lin Chen; Shu-Zhen Yan
Source:
Plant disease 2019 v.103 no.7 pp. 1551-1558
ISSN:
0191-2917
Subject:
Bacillus cereus; Meloidogyne incognita; bacteria; crop losses; endophytes; galls; gas chromatography-mass spectrometry; juveniles; root exudates; root-knot nematodes; roots; secretion; soil; tissues; tomatoes
Abstract:
... Root-knot nematodes (Meloidogyne spp.) cause serious crop losses worldwide. The colonization of tomato roots by endophytic bacteria Bacillus cereus BCM2 can greatly reduce Meloidogyne incognita damage, and tomato roots carrying BCM2 were repellent to M. incognita second-stage juveniles (J2). Here, the effects of BCM2 colonization on the composition of tomato root exudates was evaluated and potenti ...
DOI:
10.1094/PDIS-11-18-2016-RE

10. Etiology of Alternaria Leaf Spot of Cotton in Southern New Mexico

Author:
Yi Zhu; Phillip Lujan; Srijana Dura; Robert Steiner; Jinfa Zhang; Soum Sanogo
Source:
Plant disease 2019 v.103 no.7 pp. 1595-1604
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA primers; Gossypium; adenosinetriphosphatase; cotton; developmental stages; disease incidence; disease severity; environmental factors; etiology; foliar diseases; fungi; genes; leaf spot; plasma membrane; spores; surveys; temperature; New Mexico
Abstract:
... Alternaria leaf spot (caused by Alternaria spp.) is one of the most common foliar diseases of cotton (Gossypium spp.) and occurs in most cotton-growing regions of the world. In surveys of commercial cotton fields, Alternaria leaf spot has increased in prevalence and incidence in southern New Mexico due to favorable environmental conditions in recent years. Incidence, severity, and etiology of leaf ...
DOI:
10.1094/PDIS-08-18-1350-RE

11. Factors Affecting the Dynamics of Frosty Pod Rot in the Main Cocoa Areas of Santander State, Colombia

Author:
Yeirme Y. Jaimes; Fabienne Ribeyre; Carolina Gonzalez; Jairo Rojas; Edson L. Furtado; Christian Cilas
Source:
Plant disease 2019 v.103 no.7 pp. 1665-1673
ISSN:
0191-2917
Subject:
Moniliophthora roreri; artificial intelligence; clones; crop production; disease outbreaks; frosty pod rot; phenology; pods; Colombia
Abstract:
... Frosty pod rot (FPR) caused by Moniliophthora roreri is the primary disease affecting cacao production in the major producing countries of the Americas and is one of the major threats to cacao worldwide. The incidence of FPR on clones with different levels of resistance was investigated in four localities of Santander State, Colombia, between July 2013 and May 2015. Dynamics of diseased pods were ...
DOI:
10.1094/PDIS-10-18-1761-RE

12. First Report of Alternaria alternata Causing Leaf Spot on Digitalis purpurea in Italy

Author:
A. Garibaldi; G. Gilardi; S. Matic; M. L. Gullino
Source:
Plant disease 2019 v.103 no.7 pp. 1770
ISSN:
0191-2917
Subject:
Alternaria alternata; Digitalis purpurea; Scrophulariaceae; beak; conidia; conidiophores; fungal diseases of plants; gardens; genes; genomics; greenhouses; leaf spot; leaves; mycelium; necrosis; pathogenicity; plant pathogenic fungi; ribosomal DNA; spraying; streptomycin; sulfates; summer; temperature; tissues; tubulin; Italy
Abstract:
... Digitalis purpurea (family Scrophulariaceae) is a biennial species used in low maintenance gardens. In summer 2018, extensive leaf necrosis infected 30 to 50% out of 100 D. purpurea plants grown in a private garden near Biella (northern Italy) at temperatures between 18 and 25°C. The initial symptoms appeared as small, light brown, circular spots on the leaves, subsequently expanding to irregular ...
DOI:
10.1094/PDIS-11-18-2110-PDN

13. First Report of Alternaria alternata Causing Postharvest Brown Spot of Plums (Prunus domestica) in Pakistan

Author:
A. Moosa; T. Ahmad; S. A. Khan; M. L. Gleason; A. Farzand; H. Safdar; M. A. Ali
Source:
Plant disease 2019 v.103 no.7 pp. 1767
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA; DNA primers; Prunus domestica; beak; conidia; crop production; crops; disease incidence; fruits; fungi; genes; market value; mycelium; pathogenicity; plant rots; plums; polygalacturonase; spraying; tissues; Latvia; Pakistan
Abstract:
... Plum (Prunus domestica) is the most famous and commercially important stone fruit in Pakistan. Pakistan produces 50,465 metric tons of plum annually (http://www.fao.org/faostat/en/). In June 2017, plum fruits (n = 20) showing visible symptoms of brown spot were collected from storage. The disease incidence of brown spot was 20% on the observed fruit. The fruit skin showed irregular, necrotic brown ...
DOI:
10.1094/PDIS-11-18-1913-PDN

14. First Report of Alternaria tenuissima Causing Leaf Spot Disease on Iris tectorum in China

Author:
H. Sun; C. Song; I. Mubeen; J. Huang
Source:
Plant disease 2019 v.103 no.7 pp. 1786
ISSN:
0191-2917
Subject:
Alternaria alternata; Alternaria tenuissima; DNA primers; Iris ensata; Iris tectorum; aesthetic value; alcohols; arthritis; beak; color; conidia; conidiophores; disease incidence; fungal diseases of plants; genes; grasses; hepatitis; histones; landscapes; leaf spot; leaves; medicinal plants; medicinal properties; mycelium; necrosis; ornamental plants; pathogenicity; perennials; plant pathogenic fungi; rhizomes; ribosomal DNA; surveys; tissues; China; Europe
Abstract:
... Iris tectorum, indigenous to Europe, is a perennial grass that is mainly distributed in the northwest and north of China, being a common landscape garden plant. Simultaneously, I. tectorum is used as a medicinal plant, and its rhizome is utilized to cure arthritis, bruises, hepatitis, and other diseases. Several surveys were conducted in 2017 to 2018, and a large area of irregular yellow-brown spo ...
DOI:
10.1094/PDIS-01-19-0116-PDN

15. First Report of Anthracnose Causing Both Crown and Fruit Rot of Strawberry by Colletotrichum siamense in North Carolina

Author:
T. B. Adhikari; J. G. Chacon; G. E. Fernandez; F. J. Louws
Source:
Plant disease 2019 v.103 no.7 pp. 1775
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; Colletotrichum fructicola; DNA; Fragaria ananassa; Glomerella cingulata; actin; anthracnose; chitin synthase; conidia; crown rot; cultivars; disease control; ethanol; fruit quality; fruits; fungi; fungicide resistance; fungicides; genomics; glyceraldehyde-3-phosphate dehydrogenase; greenhouses; growth retardation; hyphae; leaves; micropropagation; mycelium; oligodeoxyribonucleotides; paraquat; pathogenicity; strawberries; superoxide dismutase; tissues; wilting; Bangladesh; Brazil; North Carolina
Abstract:
... Anthracnose fruit rot and anthracnose crown rot of strawberries (Fragaria × ananassa Duch.), caused by Colletotrichum spp., have been mainly associated with the C. acutatum complex (Baroncelli et al. 2015; Damm et al. 2012) and the C. gloeosporioides complex (Weir et al. 2012), respectively. In September 2017, typical symptoms of anthracnose were observed on strawberry plants in a propagation gree ...
DOI:
10.1094/PDIS-02-19-0314-PDN

16. First Report of Anthracnose Crown Rot of Strawberry Caused by Colletotrichum siamense in Taiwan

Author:
P.-C. Chung; H.-Y. Wu; H. A. Ariyawansa; S.-S. Tzean; C.-L. Chung
Source:
Plant disease 2019 v.103 no.7 pp. 1775
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; Colletotrichum dematium; Fragaria ananassa; Glomerella cingulata; actin; anthracnose; calmodulin; chitin synthase; conidia; crop production; crown rot; cultivars; cultivation area; fruits; fungi; girdling; hyphae; industry; intergenic DNA; leaf spot; marbling; necrosis; pathogenicity; petioles; relative humidity; roots; runoff; salmon; seedlings; species identification; sporodochia; spraying; strawberries; tissues; tubulin; wilting; Taiwan
Abstract:
... In Taiwan, strawberry (Fragaria × ananassa Duch.) is a high-value crop with an average annual cultivated area of ∼500 ha in the last 5 years. Over 90% of strawberry cultivation is in Miaoli County, with ‘Taoyuan No. 1’ as the predominant cultivar for more than 30 years. Anthracnose has become more destructive over the past decade. Although Colletotrichum gloeosporioides, C. dematium, C. fragariae, ...
DOI:
10.1094/PDIS-12-18-2167-PDN

17. First Report of Anthracnose of Persimmon Caused by Colletotrichum nymphaeae in Korea

Author:
O. Hassan; D. W. Lee; T. Chang
Source:
Plant disease 2019 v.103 no.7 pp. 1772
ISSN:
0191-2917
Subject:
Colletotrichum acutatum; DNA; DNA primers; Diospyros kaki; Glomerella cingulata; anthracnose; appressoria; conidia; crops; disease incidence; ethanol; etiological agents; fruits; fungi; gardens; genes; humidity; isolation techniques; persimmons; phylogeny; roadsides; statistical analysis; trees; virulence; South Korea
Abstract:
... Jiro Asian persimmon (Diospyros kaki L. f.) is widely found growing in houses, in gardens, and on roadsides in South Korea. Many factors including fungal diseases such as anthracnose negatively impact the yield and quality of persimmon crops. In July 2018, serious cases of anthracnose disease were observed in gardens in Sanju, South Korea. The disease incidence was >40% (based on five trees observ ...
DOI:
10.1094/PDIS-11-18-2114-PDN

18. First Report of Barley Yellow Dwarf Virus-PAV Infecting Oats (Avena sativa) in Taiwan

Author:
S.-M. Yao; T.-H. Hung; Y.-F. Huang; J.-I. Yang
Source:
Plant disease 2019 v.103 no.7 pp. 1796
ISSN:
0191-2917
Subject:
Avena sativa; Barley yellow dwarf virus; Barley yellow dwarf virus-PAV; RNA; RNA-directed RNA polymerase; breeding lines; coat proteins; commercialization; crop production; cultivars; disease transmission; electrophoresis; enzyme-linked immunosorbent assay; forage; genes; grain crops; growers; insects; leaves; nucleotide sequences; oats; oligodeoxyribonucleotides; phylogeny; plant diseases and disorders; plant viruses; screening; seeds; sequence analysis; subtropics; surveys; viruses; Idaho; Oregon; Taiwan
Abstract:
... Barley yellow dwarf virus is a group of positive-sense single stranded RNA viruses with many species belonging to the family Luteoviridae and known to cause significant yield losses of cereal crops worldwide (Irwin and Thresh 1990). Oat (Avena sativa L.), a temperate cereal crop usually grown as forage in subtropical regions, has been recently reintroduced into Taiwan as a local winter forage sour ...
DOI:
10.1094/PDIS-09-18-1670-PDN

19. First Report of Barley virus G in Australia

Author:
N. Nancarrow; M. Aftab; L. Zheng; S. Maina; A. Freeman; B. Rodoni; M. Spackman; P. Trębicki
Source:
Plant disease 2019 v.103 no.7 pp. 1799
ISSN:
0191-2917
Subject:
Aceria tosichella; Avena fatua; Avena sativa; High Plains virus; Hordeum vulgare; Luteovirus; Rhopalosiphum maidis; Rhopalosiphum padi; Triticum aestivum; Wheat streak mosaic virus; barley; climatic factors; discoloration; epidemiology; genome; immunoassays; leaves; mite infestations; mixed infection; nucleotide sequences; oats; viruses; wheat; Victoria (Australia); Western Australia
Abstract:
... Wheat (Triticum aestivum), barley (Hordeum vulgare), and oats (Avena sativa) are some of the most economically important cereals in Australia and worldwide. Several cereal viruses are present in southeastern Australia with varied incidence and prevalence depending on year, location, and climatic conditions. Barley and cereal yellow dwarf viruses (family Luteoviridae) are increasingly prevalent in ...
DOI:
10.1094/PDIS-01-19-0166-PDN

20. First Report of Botryosphaeria dothidea Causing Shoot Canker on Mulberry in China

Author:
Y. Huang; L. Meng; J. Liu; C. Wang
Source:
Plant disease 2019 v.103 no.7 pp. 1788
ISSN:
0191-2917
Subject:
Botryosphaeria dothidea; DNA; Morus alba; branches; cankers (plants); dieback; disease incidence; fungal anatomy; fungal diseases of plants; genes; host-pathogen relationships; mulberries; new geographic records; nucleotide sequences; pathogen identification; pathogenicity; plant pathogenic fungi; secondary infection; shoots; spring; China
Abstract:
... Mulberry (Morus alba L.) is a tree of economic importance cultivated widely across China. During June and July 2017, an outbreak of cankers and twig dieback was observed for the first time in the mulberry orchards in Xiajin County (36°95′N, 116°00′E), Shandong Province, China. The disease incidence on mulberry varied between 10 and 20% in three orchards. Symptoms included branch dieback, necrotic ...
DOI:
10.1094/PDIS-01-19-0183-PDN