U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

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.6 Remove constraint Source: 2019 v.103 no.6
Start Over

Search

126  Search Results

« Previous | 1 - 20 of 126 |
Number of results to display per page

Search Results

1. Applications of Next-Generation Sequencing for Large-Scale Pathogen Diagnoses in Soybean

Author:
Gustavo A. Díaz-Cruz; Charlotte M. Smith; Kiana F. Wiebe; Sachi M. Villanueva; Adam R. Klonowski; Bryan J. Cassone
Source:
Plant disease 2019 v.103 no.6 pp. 1075-1083
ISSN:
0191-2917
Subject:
Bean yellow mosaic virus; Cercospora sojina; Glycine max; Peronospora; Pseudomonas syringae pv. savastanoi; Pseudomonas syringae pv. tabaci; Septoria; acreage; arthropod pests; bacteria; crops; developmental stages; diagnostic techniques; fauna; flora; foliar diseases; fungi; high-throughput nucleotide sequencing; leaves; nucleotide sequences; pathovars; plant pathogens; soybeans; surveys; viruses; Manitoba
Abstract:
... Soybean (Glycine max) has become an important crop in Manitoba, Canada, with a 10-fold increase in dedicated acreage over the past decade. Given the rapid increase in production, scarce information about foliar diseases present in the province has been recorded. In order to describe the foliar pathogens affecting this legume, we harnessed next-generation sequencing (NGS) to carry out a comprehensi ...
DOI:
10.1094/PDIS-05-18-0905-RE

2. Bacterial Blight on Millet Caused by Burkholderia cepacia in Brazil

Author:
C. S. Conceição; A. D. B. Baia; P. H. R. Silva; A. M. F. Silva; A. J. G. Moraes; E. B. Souza; J. E. A. Beserra Junior; M. P. Melo; M. A. S. Gama
Source:
Plant disease 2019 v.103 no.6 pp. 1408
ISSN:
0191-2917
Subject:
Burkholderia cepacia; Pennisetum glaucum; bacteria; blight; chlorosis; clones; cultivars; flour; foliar spraying; genes; host range; leaves; millets; pathogenicity; phylogeny; plant pathogens; ribosomal RNA; statistical analysis; tetracycline; Brazil
Abstract:
... Millet (Pennisetum glaucum) is a cereal crop of high importance in some regions of the world, and in Brazil the flour is mainly used for the preparation of cakes, biscuits, and porridge. In March 2015, we observed symptoms of yellowing, chlorosis, and blight on millet leaves of cultivar ADR-300 (about 30% incidence) in a plantation located in the municipality of Baixa Grande do Ribeiro (07°51′32″S ...
DOI:
10.1094/PDIS-10-18-1894-PDN

3. Boscalid Resistance in Blumeriella jaapii: Distribution, Effect on Field Efficacy, and Molecular Characterization

Author:
Cory A. Outwater; Tyre J. Proffer; Nikki L. Rothwell; Jingyu Peng; George W. Sundin
Source:
Plant disease 2019 v.103 no.6 pp. 1112-1118
ISSN:
0191-2917
Subject:
Blumeriella jaapii; Prunus cerasus; amino acids; boscalid; defoliation; enzyme inhibitors; field experimentation; fruit quality; fruit set; fungicide resistance; genes; leaf spot; minimum inhibitory concentration; monitoring; mutation; mycelium; orchards; plant pathogenic fungi; pyraclostrobin; quinones; ripening; succinate dehydrogenase (quinone); tree mortality; trees; winter; Michigan; Ohio
Abstract:
... Cherry leaf spot (CLS), caused by the fungus Blumeriella jaapii, is a major disease of tart cherry (Prunus cerasus L.) trees, leading to early defoliation that results in uneven ripening and poor fruit quality in the current season, reduced fruit set in the following season, and increased potential for winter injury and tree death. Pristine (BASF Corporation, Research Triangle Park, NC), a commonl ...
DOI:
10.1094/PDIS-09-18-1555-RE

4. Canker on Machilus pauhoi Caused by Lasiodiplodia margaritacea in the Fujian Province of China

Author:
Q. Zhang; Z. Lu; Y. Ding; H. Liu; L. Feng
Source:
Plant disease 2019 v.103 no.6 pp. 1417
ISSN:
0191-2917
Subject:
Lasiodiplodia; Machilus pauhoi; broadleaved trees; cankers (plants); discoloration; fungal diseases of plants; host-pathogen relationships; nucleotide sequences; pathogen identification; pathogenicity; plant pathogenic fungi; ribosomal DNA; tree diseases; China
Abstract:
... Machilus pauhoi (Lauraceae) is an evergreen broad-leaf tree that is naturally distributed in the subtropical and tropical regions of China. M. pauhoi has a high economic value for its wood, bark, and seed, and its cultivation is expanding. In August 2017, dead branches were observed in 90% of M. pauhoi trees in an area of approximately 8 ha (26°46′2″N, 117°42′28″E) in Shunchang County, Fujian Prov ...
DOI:
10.1094/PDIS-10-18-1759-PDN

5. Characterization of Soybean yellow shoot virus, a New Member of the Family Potyviridae Infecting Soybean Plants in Brazil

Author:
Antonia dos Reis Figueira; Priscilla S. Geraldino-Duarte; Andrés Mauricio Pinzón Nuñez; Jan van Lent; Suellen B. F. Galvino-Costa; M. Farman; Michael M. Goodin
Source:
Plant disease 2019 v.103 no.6 pp. 1172-1180
ISSN:
0191-2917
Subject:
Amaranthaceae; Aphis gossypii; Blackberry virus Y; Carica papaya; Fabaceae; Myzus persicae; Solanaceae; amino acid sequences; cultivars; cytoplasmic inclusions; electron microscopy; genome; plant diseases and disorders; plant viruses; polyproteins; sequence analysis; soybeans; virion; viruses; Brazil
Abstract:
... A new virus species, belonging to the family Potyviridae and capable of infecting most of the soybean cultivars grown in Brazil, was collected in Lavras, Minas Gerais, Brazil, and named Soybean yellow shoot virus (SoyYSV). In this study, the complete 9,052-nucleotide genome of SoyYSV was determined and the structural, biological, and molecular properties of the virus were investigated. The SoyYSV ...
DOI:
10.1094/PDIS-06-18-1067-RE

6. Characterization of an Ohio Isolate of Brome Mosaic Virus and Its Impact on the Development and Yield of Soft Red Winter Wheat

Author:
B. A. Hodge; J. D. Salgado; P. A. Paul; L. R. Stewart
Source:
Plant disease 2019 v.103 no.6 pp. 1101-1111
ISSN:
0191-2917
Subject:
Brome mosaic virus; Liliopsida; Magnoliopsida; cowpeas; crops; cultivars; field experimentation; grain yield; growing season; soft red winter wheat; soybeans; viruses; Ohio
Abstract:
... Brome mosaic virus (BMV) is generally thought to be of little economic importance to crops; consequently, there is little information about its impact on wheat production under field conditions. After repeated detection of BMV in Ohio wheat fields at incidences up to 25%, the virus was isolated, sequenced, characterized, and tested for its impact on soft red winter wheat (SRWW). The Ohio isolate o ...
Handle:
10113/6462937
DOI:
10.1094/PDIS-07-18-1282-RE

7. Coccinonectria pachysandricola, Causal Agent of a New Foliar Blight Disease of Sarcococca hookeriana

Author:
Catalina Salgado-Salazar; Nina Shiskoff; Nicholas LeBlanc; Adnan A. Ismaiel; Maxton Collins; Marc A. Cubeta; Jo Anne Crouch
Source:
Plant disease 2019 v.103 no.6 pp. 1337-1346
ISSN:
0191-2917
Subject:
Buxus sempervirens; Nectriaceae; Pachysandra terminalis; Sarcococca; arboreta; blight; evergreen trees; fungi; genome assembly; hosts; leaf spot; pathogenicity; phylogeny; woody plants
Abstract:
... Woody plants of the Buxaceae, including species of Buxus, Pachysandra, and Sarcococca, are widely grown evergreen shrubs and groundcovers. Severe leaf spot symptoms were observed on S. hookeriana at the U.S. National Arboretum in Washington, DC, in 2016. Affected plants were growing adjacent to P. terminalis exhibiting Volutella blight symptoms. Fungi isolated from both hosts were identical based ...
DOI:
10.1094/PDIS-09-18-1676-RE

8. Combination of Suspension Array and Mycelial Growth Assay for Detecting Multiple-Fungicide Resistance in Botrytis cinerea in Hebei Province in China

Author:
Zehua Su; Xin Zhang; Jianjiang Zhao; Wenqiao Wang; Lei Shang; Shengnan Ma; Yao Mawulikplimi Adzavon; Fen Lu; Mantian Weng; Xiuying Han; Lei Yang; Qinghui Zhao; Pengxiang Zhao; Fei Xie; Xuemei Ma
Source:
Plant disease 2019 v.103 no.6 pp. 1213-1219
ISSN:
0191-2917
Subject:
Botrytis cinerea; bioassays; boscalid; carbendazim; diethofencarb; fenhexamid; genes; genotype; iprodione; median effective concentration; mutants; mutation; mycelium; phenotype; China
Abstract:
... To provide a high-throughput, efficient, and accurate method to monitor multiple-fungicide resistance of Botrytis cinerea in the field, we used the suspension array, sequencing, and mycelial growth assay in our research. Discriminating-dose bioassays for detecting carbendazim, diethofencarb, boscalid, and iprodione resistance (Carᴿ, Dieᴿ, Bosᴿ, and Iprᴿ, respectively) were used to analyze 257 isol ...
DOI:
10.1094/PDIS-07-18-1269-RE

9. Control of Wheat Fusarium Head Blight by Heat-Stable Antifungal Factor (HSAF) from Lysobacter enzymogenes

Author:
Yangyang Zhao; Chao Cheng; Tianping Jiang; Huiyong Xu; Yun Chen; Zhonghua Ma; Guoliang Qian; Fengquan Liu
Source:
Plant disease 2019 v.103 no.6 pp. 1286-1292
ISSN:
0191-2917
Subject:
Fusarium graminearum; Fusarium head blight; Lysobacter enzymogenes; antifungal properties; cell walls; conidia; conidiation; fermentation; fungi; fungicides; germination; heat stability; hyphae; median effective concentration; mycelium; plasmolysis; wheat
Abstract:
... Heat-stable antifungal factor (HSAF), which belongs to the polycyclic tetramate macrolactam family, was isolated from Lysobacter enzymogenes fermentations and exhibited inhibitory activities against a wide range of fungal pathogens. In this study, the antifungal activity of HSAF against Fusarium graminearum in vitro and in vivo was investigated. A total of 50% of mycelial growth of F. graminearum ...
DOI:
10.1094/PDIS-09-18-1517-RE

10. Detection of White Root Rot in Avocado Trees by Remote Sensing

Author:
M. L. Pérez-Bueno; M. Pineda; C. Vida; D. Fernández-Ortuño; J. A. Torés; A. de Vicente; F. M. Cazorla; M. Barón
Source:
Plant disease 2019 v.103 no.6 pp. 1119-1125
ISSN:
0191-2917
Subject:
Rosellinia necatrix; air temperature; algorithms; artificial intelligence; avocados; canopy; crops; fruit trees; image analysis; normalized difference vegetation index; orchards; regression analysis; remote sensing; root rot; soil fungi
Abstract:
... White root rot, caused by the soilborne fungus Rosellinia necatrix, is an important constraint to production for a wide range of woody crop plants such as avocado trees. The current methods of detection of white root rot are based on microbial and molecular techniques, and their application at orchard scale is limited. In this study, physiological parameters provided by imaging techniques were ana ...
DOI:
10.1094/PDIS-10-18-1778-RE

11. The Efficacy of Semiselective Chemicals and Chloropicrin/1,3-Dichloropropene–Containing Fumigants in Managing Apple Replant Disease in South Africa

Author:
M. Nyoni; M. Mazzola; J. P. B. Wessels; A. McLeod
Source:
Plant disease 2019 v.103 no.6 pp. 1363-1373
ISSN:
0191-2917
Subject:
1,3-dichloropropene; DNA; Malus domestica; Phytophthora cactorum; Pratylenchus; Pythium; apples; chloropicrin; fenamiphos; fumigants; imidacloprid; metalaxyl; orchards; phosphonates; replant disease; roots; tree growth; trees; yields; South Africa
Abstract:
... Apple replant disease (ARD) is a biological phenomenon that is encountered when old apple orchards are replanted, resulting in tree growth and yield reductions in young trees. Three ARD orchard trials were conducted, which showed that semiselective chemicals (fenamiphos, metalaxyl, imidacloprid, and phosphonates) used independently, two fumigant formulations (33.3% chloropicrin and 60.8% 1,3-dichl ...
DOI:
10.1094/PDIS-10-18-1844-RE

12. Elimination of Phytoplasmas in Rubus Mother Plants by Tissue Culture Coupled with Heat Therapy

Author:
Holger Linck; Christa Lankes; Erika Krüger; Annette Reineke
Source:
Plant disease 2019 v.103 no.6 pp. 1252-1255
ISSN:
0191-2917
Subject:
DNA; Phytoplasma; Rubus; bacterial diseases of plants; blackberries; plant nurseries; plant pathogenic bacteria; propagation materials; quantitative polymerase chain reaction; raspberries; thermotherapy; tissue culture; vegetative propagation; viruses
Abstract:
... Phytoplasmas are plant-pathogenic bacteria that cause a disease in Rubus species which is referred to as Rubus stunt. As phytoplasmas can be spread by vegetative propagation and latency periods of Rubus stunt can be up to one year, the use of pathogen-free Rubus propagation material in plant nurseries is important in order to stop the spread of this disease. Even though heat therapy has been commo ...
DOI:
10.1094/PDIS-08-18-1372-RE

13. Emergence of Cucurbit Aphid-Borne Yellows Virus in Bitter Gourd (Momordica charantia) in Tamil Nadu, India

Author:
B. Sangeetha; V. G. Malathi; P. Renukadevi
Source:
Plant disease 2019 v.103 no.6 pp. 1441
ISSN:
0191-2917
Subject:
Aphis gossypii; Cucurbit aphid-borne yellows virus; Dipsacus; Momordica charantia; RNA; coat proteins; control methods; discoloration; flowers; fruits; genes; leaves; melons; phytochemicals; plant diseases and disorders; plant viruses; pumpkins; squashes; surveys; tissues; transmission electron microscopy; vegetable crops; villages; virion; viruses; India; Spain
Abstract:
... Bitter gourd (Momordica charantia), which belongs to the family Cucurbitaceae, is widely cultivated in India. During the year 2017, symptoms such as chlorotic lesions on younger leaves, bright yellowing, dark green mottling, and marginal yellowing of matured leaves, spike-like flower (leaves are changed into flower-like structure), vein thickening, vein banding, and orange discoloration of older l ...
DOI:
10.1094/PDIS-12-18-2153-PDN

14. Epidemiology of Exobasidium Leaf and Fruit Spot of Rabbiteye Blueberry: Pathogen Overwintering, Primary Infection, and Disease Progression on Leaves and Fruit

Author:
R. J. Ingram; H. D. Ludwig; H. Scherm
Source:
Plant disease 2019 v.103 no.6 pp. 1293-1301
ISSN:
0191-2917
Subject:
Exobasidium; Vaccinium virgatum; basidiospores; blueberries; conidia; disease course; disease incidence; disease progression; disease surveillance; disease susceptibility; emerging diseases; epiphytes; fruits; fungi; inoculum; leaf spot; leaves; overwintering; rain; spring; Southeastern United States
Abstract:
... Epidemiological field studies utilizing disease monitoring, spore trapping, and trap plants were conducted on rabbiteye blueberry (Vaccinium virgatum) between 2014 and 2017 to shed light on the epidemiology of Exobasidium leaf and fruit spot, an emerging disease in the southeastern United States caused by the fungus Exobasidium maculosum. Wash plating of field-collected blueberry tissue from the l ...
DOI:
10.1094/PDIS-09-18-1534-RE

15. Evaluation of App-Embedded Disease Scales for Aiding Visual Severity Estimation of Cercospora Leaf Spot of Table Beet

Author:
Emerson M. Del Ponte; Scot C. Nelson; Sarah J. Pethybridge
Source:
Plant disease 2019 v.103 no.6 pp. 1347-1356
ISSN:
0191-2917
Subject:
Cercospora; beets; leaf spot; leaves; photographs
Abstract:
... Two diagrammatic ordinal scales are available in the Estimate app (2017 version) for Cercospora leaf spot (CLS) severity on table beet: 10% linear (linear-based diagrammatic scale [LIN]) and logarithmic based (Horsfall–Barratt [HB]). These allow for estimating severity data of four types depending on the system used. A group of 30 raters assigned percentage severity on 30 photographs of diseased t ...
DOI:
10.1094/PDIS-10-18-1718-RE

16. Expanding Knowledge of the Host Range of Tomato chlorosis virus and Host Plant Preference of Bemisia tabaci MEAM1

Author:
Arnaldo E. Fariña; Jorge A. M. Rezende; William M. Wintermantel
Source:
Plant disease 2019 v.103 no.6 pp. 1132-1137
ISSN:
0191-2917
Subject:
Bemisia tabaci; Beta vulgaris subsp. vulgaris; Chenopodium quinoa; Jaltomata procumbens; Physalis pruinosa; Solanum aculeatissimum; Solanum viarum; Tomato chlorosis virus; crops; eggplants; eggs; host plants; host range; hybrids; inoculum; oviposition; plant diseases and disorders; plant viruses; tomatoes; virus transmission; viruses; Brazil
Abstract:
... The crinivirus Tomato chlorosis virus (ToCV) is often found infecting tomato crops in Brazil, with variable incidence, but associated with prevalence of its primary vector, Bemisia tabaci MEAM1. ToCV control is difficult because there are no resistant commercial tomato varieties or hybrids available and chemical spray for control of the whitefly vector has not been effective. The present study eva ...
DOI:
10.1094/PDIS-11-18-1941-RE

17. Film-Forming Polymers and Surfactants Reduce Infection and Sporulation of Phytophthora ramorum on Rhododendron

Author:
Ebba K. Peterson; Eric R. Larson; Jennifer L. Parke
Source:
Plant disease 2019 v.103 no.6 pp. 1148-1155
ISSN:
0191-2917
Subject:
Phytophthora ramorum; Rhododendron; disease control; disease detection; disease transmission; durability; fungal diseases of plants; fungicides; leaf blight; plant pathogenic fungi; polymers; sporangia; sporulation; surfactants
Abstract:
... Phytophthora ramorum, cause of sudden oak death and ramorum leaf blight, can persist undetected in infested nurseries. Many conventional fungicides are effective in reducing or delaying symptom expression but some may confound visual detection of infected plants. We tested film-forming polymers (FFPs) and surfactants for their ability to reduce infection and sporulation of P. ramorum on rhododendr ...
DOI:
10.1094/PDIS-05-18-0802-RE

18. First Detection of European Isolates of Wheat streak mosaic virus in Canada

Author:
H. Bennypaul; I. Abdullahi; M. W. Harding; R. Aboukhaddour
Source:
Plant disease 2019 v.103 no.6 pp. 1442
ISSN:
0191-2917
Subject:
DNA primers; Wheat streak mosaic virus; amino acids; breeding; breeding programs; coat proteins; computer software; genes; genetic variation; nucleotide sequences; polyproteins; proteinases; sequence analysis; sequence deletion; surveys; wheat; Alberta; Colorado; Iran; Mexico; Ontario; Russia; Saskatchewan
Abstract:
... Wheat streak mosaic virus (WSMV) causes wheat streak mosaic disease, a potentially devastating disease of wheat with a worldwide distribution (Singh et al. 2018). WSMV is a positive-sense, single-stranded, monopartite RNA virus and is the type member of the genus Tritimovirus in the family Potyviridae (Stenger et al. 2002). WSMV is known for causing damage to wheat in western Canada; the most rece ...
DOI:
10.1094/PDIS-12-18-2193-PDN

19. First Report of Alternaria alternata Causing Postharvest Rot on Stored Pomegranate in Pakistan

Author:
M. W. Alam; A. Rehman; S. Ahmad; M. Sarwar; S. Ali; T. Shafeeq; S. Aslam; A. Mannan; H. Rosli
Source:
Plant disease 2019 v.103 no.6 pp. 1412
ISSN:
0191-2917
Subject:
Alternaria alternata; DNA primers; DNA-directed RNA polymerase; Punica granatum; beak; cold storage; conidia; conidiophores; disease incidence; ethanol; fruits; fungi; genes; hyphae; olives; pathogenicity; plant rots; polygalacturonase; pomegranates; postharvest diseases; ribosomal DNA; sprayers; storage temperature; storage time; tissues; Pakistan
Abstract:
... Pomegranate (Punica granatum) is an important crop in Pakistan and predominantly planted in Muzaffargarh (30°4′27.7572″N, 71°11′4.7544″E) and Multan (30°7′40.9296″N, 71°23′11.1984″E), which are the primary pomegranate producing areas of the Punjab Province, Pakistan. During November 2017, postharvest fruit rot was observed on ‘Kandhari’ pomegranate after 35 days of storage at 6°C. The external sym ...
DOI:
10.1094/PDIS-01-19-0173-PDN

20. First Report of Angelica keiskei Leaf Spots Caused by Alternaria alternata in China

Author:
J. P. Wu; J. Zhou; Z. B. Jiao; L. F. Chen; Z. X. Liu; F. L. Guo
Source:
Plant disease 2019 v.103 no.6 pp. 1426
ISSN:
0191-2917
Subject:
Agricultural Research Service; Alternaria alternata; Angelica keiskei; DNA; DNA primers; carrots; chalcone; conidia; conidiophores; coumarin; cultivation area; disease severity; ethanol; fungi; genes; glyceraldehyde-3-phosphate dehydrogenase; greenhouses; histones; human health; industry; leaf spot; leaves; mercuric chloride; mycelium; pathogenicity; peptide elongation factors; polygalacturonase; potatoes; risk; sequence analysis; spraying; streptomycin; sulfates; tea; temperature; wines; China; Japan
Abstract:
... Ashitaba (Angelica keiskei) is a flowering plant native to Japan and planted in many Asian countries (Park 2013). It was introduced into China in the late 1990s, where its functional components, including chalcone, coumarin, and flavonoids, are found to promote human health. Consequently, ashitaba has been used in various herbal products, wine, tea, and other supplements (Wu et al. 2016). The curr ...
DOI:
10.1094/PDIS-11-18-2074-PDN