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You searched for: Journal name Plant disease Remove constraint Journal name: Plant disease Publication year rev 7979-2021 Remove constraint Publication year rev: 7979-2021 Source 2021 v.105 no.4 Remove constraint Source: 2021 v.105 no.4
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1. Aphelenchoides besseyi Parasitizing Common Bean in Brazil

Author:
Luciany Favoreto; Maurício Conrado Meyer; Angélica Calandrelli; Michele Corpolato Maia da Silva; Santino Aleandro da Silva; Andressa Cristina Zamboni Machado
Source:
Plant disease 2021 v.105 no.4 pp. 748-751
ISSN:
0191-2917
Subject:
Aphelenchoides besseyi; Glycine (Fabaceae); Phaseolus vulgaris; beans; cotton; deformation; endoparasites; greenhouses; leaves; pathogenicity; soybeans; Brazil; Costa Rica
Abstract:
... Aphelenchoides besseyi is the causal agent of soybean green stem and foliar retention syndrome known as “Soja Louca II.” This nematode has recently been reported parasitizing cotton in Brazil. In Costa Rica, it causes the symptoms known as “amachamiento” and false angular spots in common bean (Phaseolus vulgaris). Due to the great importance of beans to Brazilian agriculture, the objective of this ...
DOI:
10.1094/PDIS-09-20-1991-SC

2. Biology and Management of Bacterial Spot of Peppers in Oklahoma

Author:
John Damicone; Felipe Cevallos; Mark Trent; Claudia Diaz; Brett Johnson; Zhaorigetu Hubhachen
Source:
Plant disease 2021 v.105 no.4 pp. 1129-1135
ISSN:
0191-2917
Subject:
Xanthomonas euvesicatoria; capsaicin; copper; crop rotation; cultivars; hybrids; pathogen survival; plant genetics; sweet peppers; virulence; Oklahoma
Abstract:
... Bacterial spot, an important disease of bell and chili peppers grown in Oklahoma, is caused by Xanthomonas euvesicatoria. We evaluated isolates from 1995 to 2015 (n = 72) for avirulence alleles and race by assessing hypersensitive responses (HRs) on differentials with resistance genes Bs1, Bs2, Bs3, or Bs4. Most isolates (96%) expressed AvrBs2 (races 1, 3, 7, 8), and only three were virulent on Bs ...
DOI:
10.1094/PDIS-05-20-0926-RE

3. Combined Use of PGPRs and Reduced Rates of Azoxystrobin to Improve Management of Sheath Blight of Rice

Author:
Xin-Gen Zhou; K. Vijay Krishna Kumar; Linda W. Zhou; M. S. Reddy; Joseph W. Kloepper
Source:
Plant disease 2021 v.105 no.4 pp. 1034-1041
ISSN:
0191-2917
Subject:
Bacillus subtilis; Thanatephorus cucumeris; application rate; azoxystrobin; booting stage; dose response; field experimentation; grain yield; greenhouses; leaf blight; models; plant growth-promoting rhizobacteria; rice
Abstract:
... Farmers rely heavily on the use of strobilurin fungicides to manage sheath blight (ShB) caused by Rhizoctonia solani AG1-IA, the most important disease in rice in the southern United States. Greenhouse and field studies were conducted to evaluate the potential use of plant growth–promoting rhizobacteria (PGPRs) in combination with a reduced rate of azoxystrobin application as a strategy to improve ...
DOI:
10.1094/PDIS-07-20-1596-RE

4. Cucurbit Leaf Crumple Virus Associated to Watermelon Disease in Campeche State, Mexico

Author:
E. A. Rodríguez-Negrete; R. Jordan-Ramírez; N. E. Leyva-López; J. Méndez-Lozano
Source:
Plant disease 2021 v.105 no.4 pp. 1235
ISSN:
0191-2917
Subject:
Aleyrodidae; Citrullus lanatus; Cucurbit leaf crumple virus; Melon chlorotic leaf curl virus; RNA; Squash leaf curl virus; Watermelon chlorotic stunt virus; agroinfiltration; cantaloupes; circular DNA; cucumbers; genome; leaves; mixed infection; necrosis; pumpkins; reverse transcriptase polymerase chain reaction; sequence analysis; squashes; viruses; watermelons; Arizona; California; Central America; Florida; Georgia; Mexico; South Carolina; Texas
Abstract:
... An annual recurrent disease causing yield reduction in cultivated watermelon (Citrullus lanatus) was documented by the growers in different farms of Campeche state, Mexico. In April 2019 and March 2020, open field grown watermelon plants showed symptoms such as leaf curling, crumpling, and leaf basal or apical necrosis, with an incidence ranging from 30 up to 80%. These plants also presented high ...
DOI:
10.1094/PDIS-12-20-2551-PDN

5. Cultivar Susceptibility and Environmental Parameters Affecting Symptom Expression of Red Leaf Blotch of Almond in Spain

Author:
Xavier Miarnau; Lourdes Zazurca; Laura Torguet; Erick Zúñiga; Ignasi Batlle; Simó Alegre; Jordi Luque
Source:
Plant disease 2021 v.105 no.4 pp. 940-947
ISSN:
0191-2917
Subject:
Polystigma; almonds; cultivars; disease control; disease incidence; foliar diseases; fungicide application; fungicides; leaf blotch; orchards; rain; spring; summer; trees; Mediterranean region; Middle East; Spain
Abstract:
... Red leaf blotch (RLB) of almond, caused by Polystigma amygdalinum, is an important foliar disease of this nut tree in the Mediterranean basin and Middle East regions. In recent years, the incidence of this disease has increased in Spain, corresponding to increases in the area of newly planted orchards and the use of susceptible cultivars. In 2009, an experimental orchard including 21 almond cultiv ...
DOI:
10.1094/PDIS-04-20-0869-RE

6. Development of Boscalid Resistance in Botrytis cinerea and an Efficient Strategy for Resistance Management

Author:
Kaidi Cui; Leiming He; Tongtong Li; Wei Mu; Feng Liu
Source:
Plant disease 2021 v.105 no.4 pp. 1042-1047
ISSN:
0191-2917
Subject:
Botrytis cinerea; boscalid; cucumbers; fruits; gray mold; median effective concentration; mutation; resistance management; succinate dehydrogenase (quinone); tomatoes; topical application; China
Abstract:
... Among succinate dehydrogenase inhibitors, only boscalid has been registered in China for controlling gray mold. In Shandong Province of China, it has been more than a decade since the first use of boscalid to control gray mold. In the current study, we monitored the resistance development process of Botrytis cinerea to boscalid, identified the mutation types that occurred in boscalid-resistant iso ...
DOI:
10.1094/PDIS-05-20-1009-RE

7. Development of High-Resolution DNA Melting Analysis for Simultaneous Detection of Potato Mop-Top Virus and Its Vector, Spongospora subterranea, in Soil

Author:
Xianzhou Nie; Mathuresh Singh; Dahu Chen; Cassandra Gilchrist; Yasmine Soqrat; Manisha Shukla; Alexa Creelman; Virginia Dickison; Bihua Nie; Jacques Lavoie; Vikram Bisht
Source:
Plant disease 2021 v.105 no.4 pp. 948-957
ISSN:
0191-2917
Subject:
DNA; Potato mop-top virus; RNA; Spongospora subterranea; bioassays; gel electrophoresis; potatoes; protists; reverse transcriptase polymerase chain reaction; soil; tobacco; New Brunswick
Abstract:
... In this study, a set of duplex reverse transcription PCR (RT-PCR)–mediated high-resolution DNA melting (HRM) analyses for simultaneous detection of potato mop-virus (PMTV) and its protist vector, Spongospora subterranea f. sp. subterranea (Sss), was developed. The infestation of soil by PMTV was detected with a tobacco-based baiting system. Total RNA extracted from the soil led to successful RT-PC ...
DOI:
10.1094/PDIS-06-20-1321-RE

8. Diversity and Cross-Infection Potential of Colletotrichum Causing Fruit Rots in Mixed-Fruit Orchards in Kentucky

Author:
Madison J. Eaton; Shanice Edwards; Harrison A. Inocencio; Franklin J. Machado; Etta M. Nuckles; Mark Farman; Nicole A. Gauthier; Lisa J. Vaillancourt
Source:
Plant disease 2021 v.105 no.4 pp. 1115-1128
ISSN:
0191-2917
Subject:
apples; barcoding; blueberries; cross infection; fruits; fungicides; genome; morphs; phylogeny; plant rots; strawberries; Kentucky
Abstract:
... Fungi in the genus Colletotrichum cause apple, blueberry, and strawberry fruit rots, which can result in significant losses. Accurate identification is important because species differ in aggressiveness, fungicide sensitivity, and other factors affecting management. Multiple Colletotrichum species can cause similar symptoms on the same host, and more than one fruit type can be infected by a single ...
DOI:
10.1094/PDIS-06-20-1273-RE

9. Draft Genome Sequence of Cumin Blight Pathogen Alternaria burnsii

Author:
Zhonghong Feng; Tom Hsiang; Xiaofei Liang; Rong Zhang; Guangyu Sun
Source:
Plant disease 2021 v.105 no.4 pp. 1165-1167
ISSN:
0191-2917
Subject:
Alternaria; Cuminum cyminum; Hansenia weberbaueriana; Phoenix dactylifera; air; blight; cumin; endophytes; fungi; genome; genomics; leaf spot; nucleotide sequences; pathogens; pumpkins; saprophytes; seed rot; soil; wheat
Abstract:
... The fungal genus Alternaria consists of highly diverse species. They can be isolated readily from soil, water, and many plants, and even from animals and humans. Alternaria burnsii is a small-spored species of section Alternaria. It has been reported as a pathogen, an endophyte, and a saprophyte, and can also be found in indoor air. It causes cumin blight, a destructive disease on cumin (Cuminum c ...
DOI:
10.1094/PDIS-02-20-0224-A

10. Dynamics of the Rice Blast Fungal Population in the Field After Deployment of an Improved Rice Variety Containing Known Resistance Genes

Author:
Wenjuan Wang; Jing Su; Kailing Chen; Jianyuan Yang; Shen Chen; Congying Wang; Aiqing Feng; Zonghua Wang; Xiaoyan Wei; Xiaoyuan Zhu; Guo-dong Lu; Bo Zhou
Source:
Plant disease 2021 v.105 no.4 pp. 919-928
ISSN:
0191-2917
Subject:
Magnaporthe oryzae; blast disease; disease resistance; disease severity; evolution; field experimentation; fungi; haplotypes; new variety; pathogens; rice; varietal resistance; virulence; China
Abstract:
... Rice blast, caused by the fungus Magnaporthe oryzae, is one of the most destructive diseases of rice worldwide. Management through the deployment of host resistance genes would be facilitated by understanding the dynamics of the pathogen’s population in the field. Here, to investigate the mechanism underlying the breakdown of disease resistance, we conducted a six-year field experiment to monitor ...
DOI:
10.1094/PDIS-06-20-1348-RE

11. Effect of 6-Methoxy-2-Benzoxazolinone (MBOA) on Pythium Species and Corn Seedling Growth and Disease

Author:
J. Acharya; T. C. Kaspar; A. E. Robertson
Source:
Plant disease 2021 v.105 no.4 pp. 752-757
ISSN:
0191-2917
Subject:
allelochemicals; allelopathy; ambient temperature; chloramphenicol; corn; cover crops; dimethyl sulfoxide; juices; mycelium; neomycin; root rot; seedling growth; seedlings; winter rye
Abstract:
... Corn yield reduction following a cereal rye cover crop has been attributed to, among other factors, allelochemicals released from decomposing cereal rye residue. The allelopathic effect of 6-methoxy-2-benzoxazolinone (MBOA) was evaluated on corn seedling growth, mycelial growth of seven pathogenic species of Pythium, and root rot of corn seedlings caused by Pythium spp. at 13, 16, and 22 to 23°C ( ...
DOI:
10.1094/PDIS-04-20-0824-SC

12. Etiology of Halo Blight in Michigan Hopyards

Author:
Douglas S. Higgins; Ross J. Hatlen; Jan M. Byrne; Monique L. Sakalidis; Timothy D. Miles; Mary K. Hausbeck
Source:
Plant disease 2021 v.105 no.4 pp. 859-872
ISSN:
0191-2917
Subject:
Bayesian theory; Diaporthe; acreage; blight; disease control; etiology; histones; humidity; internal transcribed spacers; leaves; necrosis; peptide elongation factors; pycnidia; rain; statistical analysis; tubulin; Michigan
Abstract:
... Michigan’s hop acreage ranks fourth nationally, but the state’s growers contend with unique disease challenges resulting from frequent rainfall and high humidity. In August 2018, a Michigan hop grower reported necrosis and blighting of foliage and shattering of cones resulting in yield loss. Irregular-shaped lesions developed on leaves, surrounded by a halo of chlorotic tissue, and cone bracts bec ...
DOI:
10.1094/PDIS-05-20-0924-RE

13. Fermentation: An Unreliable Seed Treatment for Bacterial Fruit Blotch of Watermelon

Author:
Yixin Ge; Lan Luo; Liming Xia; Xue Luo; Hongkai Bi; Hanxiao Gong; Yanli Tian; Ron R. Walcott; Baishi Hu
Source:
Plant disease 2021 v.105 no.4 pp. 1026-1033
ISSN:
0191-2917
Subject:
Acidovorax avenae subsp. citrulli; fermentation; fruit juices; fruits; growth retardation; pH; pathogens; population growth; propidium; risk reduction; seed treatment; seedlings; temperature; virulence; watermelons; China
Abstract:
... Acidovorax citrulli is a seedborne pathogen that causes bacterial fruit blotch (BFB), a global threat to watermelon production. Treating watermelon seeds to eliminate A. citrulli is a critical component of BFB management, and several strategies have been evaluated to mitigate the impact of the disease. In China, watermelon seed producers routinely incubate seeds in watermelon juice (fermentation) ...
DOI:
10.1094/PDIS-05-20-1056-RE

14. Fine Mapping of the Ph-2 Gene Conferring Resistance to Late Blight (Phytophthora infestans) in Tomato

Author:
Xiaona Zhi; Jinshuai Shu; Zheng Zheng; Tao Li; Xiaorong Sun; Jinrui Bai; Yanan Cui; Xiaoxuan Wang; Zejun Huang; Yanmei Guo; Yongchen Du; Yuhong Yang; Lei Liu; Junming Li
Source:
Plant disease 2021 v.105 no.4 pp. 851-858
ISSN:
0191-2917
Subject:
Phytophthora infestans; Solanum lycopersicum; cultivars; genes; genomics; tomatoes
Abstract:
... Late blight is a devastating tomato disease. Breeding new varieties with multiple resistance (R) genes is highly effective for preventing late blight. The Ph-2 gene mediates resistance to Phytophthora infestans race T₁ in tomato. In this study, we used an F₂ population derived from a cross between Solanum lycopersicum Moboline (resistant) and LA3988 (susceptible) cultivars for the fine mapping of ...
DOI:
10.1094/PDIS-03-19-0679-RE

15. First Draft Genome Sequence Resource of Colletotrichum liriopes Causing Leaf Anthracnose on Ophiopogon japonicus

Author:
Mingshuang Wang; Xiujun Luo; Huizhong Wang
Source:
Plant disease 2021 v.105 no.4 pp. 1179-1182
ISSN:
0191-2917
Subject:
Colletotrichum; Ophiopogon japonicus; anthracnose; economic valuation; fungi; leaves; medicinal plants; nucleotide sequences; pathogenesis; pathogenicity; pathogens; secondary metabolites
Abstract:
... Leaf anthracnose of Ophiopogon japonicus is an important disease that can significantly reduce the quality and economic value of this traditional Chinese medicinal plant. The disease is caused by Colletotrichum liriopes, a necrotrophic fungus that belongs to the Glomerellaceae family of the Sordariomycetes class. Here, we present the draft whole-genome sequence of the C. liriopes strain A2 that ca ...
DOI:
10.1094/PDIS-11-20-2326-A

16. First Report of Alternaria tenuissima Causing Leaf Blight on Sugarcane in China

Author:
J. Li; R. Y. Zhang; X. Y. Wang; H. L. Shan; C. M. Wang; X. Y. Cang; Y. K. Huang
Source:
Plant disease 2021 v.105 no.4 pp. 1222
ISSN:
0191-2917
Subject:
Alternaria tenuissima; Saccharum officinarum; adenosinetriphosphatase; air; barley; beak; conidia; conidiophores; culture media; disease control; ethanol; fungi; greenhouses; histones; hyphae; leaf blight; leaf spot; leaves; olives; pathogenicity; pathogens; plasma membrane; sugar crops; sugarcane; surveys; water stress; China; India
Abstract:
... Sugarcane (Saccharum officinarum L.) is the main sugar crop in China. Yunnan is the second largest sugarcane production province in China. In December 2018, leaf blight was first observed on almost every leaf of sugarcane ‘Huanan 54-11’, ‘Baimei’, and ‘Chongan’ in Kaiyuan (103.27° E, 23.72° N), Yunnan. In October 2019, during our survey in the field in Lingcang (100.08° E, 23.88° N), Yunnan, this ...
DOI:
10.1094/PDIS-07-20-1507-PDN

17. First Report of Alternaria tenuissima Causing Leaf Spot of Celery (Apium graveolens) in China

Author:
Jian-Qiang Zhang; Kang-Li Wu; Xiao-Meng Zhang; Jia-Jia Li; S. Abdramane; Tong Shen; Yong-Qiang Tian
Source:
Plant disease 2021 v.105 no.4 pp. 1220
ISSN:
0191-2917
Subject:
Alternaria tenuissima; Apium graveolens; DNA; DNA-directed RNA polymerase; allergens; celery; conidia; conidiophores; culture media; data collection; fungi; genes; glyceraldehyde; growth chambers; internal transcribed spacers; leaf spot; leaves; models; mycelium; olives; pathogenicity; pathogens; peptide elongation factors; phylogeny; polygalacturonase; relative humidity; scotophase; statistical analysis; surveys; China
Abstract:
... Celery (Apium graveolens) is one of the most widely grown vegetables in the world. A survey in Anding District of Gansu Province in 2019 showed that the incidence of celery leaf spot was 25 to 45%. The disease mainly occurs in late June and July. A high-temperature and high-humidity environment is conducive to the onset of the leaf spot. The initial symptoms were many small, light brown, irregular ...
DOI:
10.1094/PDIS-09-20-2083-PDN

18. First Report of Berkeleyomyces basicola Causing Mango Root Rot and Decline in India

Author:
P. K. Shukla; Tahseen Fatima; Nidhi Kumari
Source:
Plant disease 2021 v.105 no.4 pp. 1214
ISSN:
0191-2917
Subject:
DNA; Lasiodiplodia; Mangifera indica; Thielaviopsis; Verticillium; carrots; chlamydospores; color; computer software; culture media; databases; decline; discoloration; fungi; gummosis; hardwood; industry; mangoes; mycelium; necrosis; orchards; phylogeny; rhizosphere; risk; root rot; soil sterilization; trees; virulence; India
Abstract:
... Mango wilt has been a serious constraint in mango (Mangifera indica L.) production in several countries including India (Shukla et al. 2018). Although several fungal pathogens have been reported associated with the disease, species of Ceratocystis, Verticillium, and Lasiodiplodia have been found predominantly responsible for the wilt (Shukla et al. 2018). A 27-year-old mango tree (cv. Dashehari) a ...
DOI:
10.1094/PDIS-10-20-2133-PDN

19. First Report of Cercospora apiicola Causing Leaf Spots and Stem Lesions on Celery in China

Author:
Q. Zhao; A-L. Chai; Y.-X. Shi; X.-W. Xie; L. Li; B.-J. Li
Source:
Plant disease 2021 v.105 no.4 pp. 1195
ISSN:
0191-2917
Subject:
Apium graveolens; Cercospora; DNA; actin; celery; conidia; conidiophores; culture media; disease incidence; fungi; greenhouses; histones; microscopy; mycelium; pathogenicity; pathogens; peptide elongation factors; phylogeny; relative humidity; sodium hypochlorite; solar radiation; temperature; vegetable crops; China; Greece; South Korea; Venezuela
Abstract:
... Celery (Apium graveolens L.) is a vegetable crop cultivated widely in the Mediterranean, Europe, and parts of Asia. From March to May in 2014, leaf spots and stem lesions were observed on celery plants in Yanqing (116°03′E, 40°32′N), Beijing, and Chengdu (104°06′E, 30°67′N), Sichuan Province. Plants developed 0.3- to 1.8-cm-diameter subcircular leaf spots with brown centers surrounded by pale yell ...
DOI:
10.1094/PDIS-09-20-1879-PDN

20. First Report of Chaetomium globosum Causing Leaf Blight on Brassica oleracea in China

Author:
Mingzhao Zhu; Zhiyuan Fang; Mu Zhuang; Yangyong Zhang; Honghao Lv; Jialei Ji; Limei Yang; Yong Wang
Source:
Plant disease 2021 v.105 no.4 pp. 1204
ISSN:
0191-2917
Subject:
Brassica oleracea var. capitata; Cannabis sativa; Chaetomium globosum; National Center for Biotechnology Information; Punica granatum; agar; cabbage; casein; conidia; economic valuation; ethanol; fungi; genes; greenhouses; growth chambers; horticulture; hydrolysates; internal transcribed spacers; leaf blight; leaves; liquids; microscopy; mycelium; pathogenicity; pathogens; sucrose; yeast extract; China
Abstract:
... Cabbage (Brassica oleracea var. capitata L.) is widely cultivated in China and be of important economic value. In October 2019, all the plants of cabbage inbred line ‘2358’ cultivated in greenhouses of the Chinese Academy of Agricultural Sciences (Beijing) were showing symptoms of leaf wilt. It usually took 2 weeks for the leaves to become completely wilted, and the plants gradually died. Approxim ...
DOI:
10.1094/PDIS-07-20-1540-PDN