A5028005662- Plant Pathogens and Fungal Diseases
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Wheat and Barley Genetics and Pathology
- Mycotoxins in Agriculture and Food
- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Resistance
- Plant pathogens and resistance mechanisms
- Rice Cultivation and Yield Improvement
- Plant Disease Management Techniques
- Yeasts and Rust Fungi Studies
- Genetics and Plant Breeding
- Nematode management and characterization studies
- Insect and Pesticide Research
- Pesticide Exposure and Toxicity
- Sugarcane Cultivation and Processing
- Genetic Mapping and Diversity in Plants and Animals
- Turfgrass Adaptation and Management
- Insect Pest Control Strategies
- GABA and Rice Research
- Plant Gene Expression Analysis
- Agricultural Science and Fertilization
- Mycorrhizal Fungi and Plant Interactions
- Plant Micronutrient Interactions and Effects
- Powdery Mildew Fungal Diseases
North Dakota State University
2010-2022
University of California, Davis
2018-2022
Saskatoon Research and Development Centre
2022
Agriculture and Agri-Food Canada
2022
United States Department of Agriculture
2017
Hartnell College
2017
Tribhuvan University
2008
Dakota State University
2008
Fusarium head blight (FHB) is primarily caused by graminearum in North America. Isolates of F. can be identified as one three chemotypes: 3-acetyl-deoxynivalenol (3ADON), 15-acetyl-deoxynivalenol (15ADON), and nivalenol (NIV). In this study, we characterized isolates collected 1980 to 2000 (old collection) 2008 (new from Dakota found a 15-fold increase 3ADON the new collection. Evaluation randomly selected 15ADON on spring wheat genotypes (Grandin, Steele-ND, ND 2710) single-floret...
Wheat stripe rust (yellow [Yr]), caused by Puccinia striiformis f. sp. tritici, is an economically important disease of wheat worldwide. Virulence information on P. tritici populations to implement effective control with resistant cultivars. In total, 235 isolates from Algeria, Australia, Canada, Chile, China, Hungary, Kenya, Nepal, Pakistan, Russia, Spain, Turkey, and Uzbekistan were tested 20 single Yr-gene lines the genotypes that are used differentiate races in United States. The...
Farmers’ knowledge on pesticides and their safe use are critical for implementing effective pest management program. A household survey was conducted using the semi-structured questionnaire to evaluate vegetable growers’ pesticide safety practices in Nepal. Results indicated that chemical were primary choice of over 80% growers management. Notably, 90% aware adverse effects human health environment. Over 84% used at least one form personal protection equipment (PPE) during spray or handling,...
Bipolaris oryzae causes brown spot in rice ( Oryza sativa ) inflicting substantial grain yield losses worldwide. Knowledge of the population structure, genetic diversity and sexual recombination fungal pathogen can help to implement effective disease management strategies. In this study, B. isolates sampled from Iran, Philippines Japan were analysed with 12 simple‐sequence repeat SSR markers, newly developed genome sequence fungus. Among 288 genotyped, 278 unique haplotypes identified. High...
Fusarium graminearum is the major causal agent of head blight (FHB) in barley and wheat North America. The fungus not only causes yield loss crops but also produces harmful trichothecene mycotoxins [Deoxynivalenol (DON) its derivatives-3-acetyldeoxynivalenol (3ADON) 15-acetyldeoxynivalenol (15ADON), nivalenol (NIV)] that contaminate grains. Previous studies showed a dramatic increase 3ADON-producing isolates with higher aggressiveness DON production than 15ADON-producing However, genetic...
Fusarium head blight (FHB) is an important disease of wheat and barley worldwide. The primarily caused by members the graminearum species complex, consisting at least 14 phylogenetically distinct species. To determine population structure FHB pathogens in a naturally infected nursery located Jianyang, Fujian province, China, 160 isolates F. complex were recovered from symptomatic spike samples collected two consecutive years (2008 2009) characterized using species- chemotype-specific...
Verticillium dahliae is widely distributed in potato and olive fields Lebanon, causing serious economic losses. However, little known about the inoculum source, population structure, genetic diversity of pathogen or mechanisms dissemination within Lebanon. To understand a total 203 isolates sampled from (n = 78) 125) were characterized for species, mating type, race, relationships delineated using 13 microsatellite markers. All except one V. dahliae, with 55.1 12.1% race 1, 43.6 83.1% 2...
Verticillium dahliae, the soilborne fungal pathogen, causes vascular wilt on many economically important crops, resulting in significant yield losses. V. klebahnii (isolate PD659) and isaacii PD660), two related species that cause few or no symptoms some hosts, were evaluated as potential biocontrol agents (BCAs) eggplant, lettuce, tomato by pre-, post-, coinoculation with a virulent race 1 isolate of dahliae (VdLs16). Initial studies demonstrated efficacy both BCAs was similar to reference...
Abstract Common root rot ( CRR ) and spot blotch, caused by Cochliobolus sativus (Ito Kurib.) Drechsl. ex Dast., are important diseases of barley Hordeum vulgare L.) wheat Triticum aestivum worldwide. However, the population biology C. is still poorly understood. In this study, genetic structure three populations, consisting isolates sampled respectively from leaves BL ), roots BR WR in North Dakota, was analysed with amplified fragment length polymorphism AFLP markers. A total 127 loci were...
Understanding pathogen evolution over time is vital for plant breeding and deployment of host resistance. In the context a soilborne pathogen, potential host-directed Verticillium dahliae race 1 isolate genotypic variation V. associated with two major hosts (lettuce tomato) were determined. total, 427 isolates recovered 6 years from resistance screening nursery infested single isolate. separate study, an additional 206 representing 163 43 commercial lettuce tomato fields, respectively,...
Fusarium head blight (FHB) is a devastating disease in wheat. The use of resistant germplasm from diverse sources can significantly improve resistance to the disease. "Surpresa" Brazilian spring wheat cultivar with moderate FHB resistance, different currently used sources. In this study, we aimed identify and map genetic loci for Surpresa. A mapping population consisting 187 recombinant inbred lines (RILs) was developed cross between Surpresa susceptible cultivar, "Wheaton." evaluated by...
Verticillium wilt is one of the most devastating soilborne diseases in lettuce, and use host resistance optimal choice for its management. This study focused on identifying mapping genetic loci against dahliae race 3 a population 200 F 2:3 families developed from cross between moderately resistant red-leaf lettuce ‘Sentry’ susceptible green-leaf ‘La Brillante’. The was genotyped using tunable genotyping-by-sequencing (tGBS) approach. An ultra-high-density linkage map containing 34,838 single...
The ascomycete, Sclerotinia sclerotiorum , has a broad host range and causes yield loss in dicotyledonous crops world wide. Genomic diversity was determined population of 127 isolates obtained from individual canola ( Brassica napus ) fields western Canada. Genotyping with 39 simple sequence repeat (SSR) markers revealed each isolate unique haplotype. Analysis molecular variance showed 97% due to 3% geographical location. Testing mycelium compatibility among 133 identified clones mutually...
Verticillium dahliae is a widespread fungal pathogen that causes wilt on many economically important crops and ornamentals worldwide. Populations of V. have been divided into two distinct races based upon differential host responses in tomato lettuce. Recently, the contemporary race 2 isolates were further an additional tomato. Herein, we provide high-quality reference genome for 1 strain VdLs.16 isolated from lettuce California, U.S.A. This resource will contribute to ongoing research aims...
HomePlant DiseaseVol. 103, No. 8First Report of Phomopsis Stem Canker Sunflower (Helianthus annuus) Caused by Diaporthe gulyae in China PreviousNext DISEASE NOTES OPENOpen Access licenseFirst ChinaY. Zhang, Y. Yu, M. Li, J. K. D. Puri, and ZhaoY. Zhanghttp://orcid.org/0000-0003-4656-2001College Horticulture Plant Protection, Inner Mongolia Agricultural University, Hohhot, 010018, China, YuDepartment Forest Conservation Sciences, University British Columbia, Vancouver, BC, V6T 1Z4, Canada,...
Abstract Background Plant pathogens and their hosts undergo adaptive changes in managed agricultural ecosystems, by overcoming host resistance, but the underlying genetic adaptations are difficult to determine natural settings. Verticillium dahliae is a fungal pathogen that causes wilt on many economically important crops including lettuce. We assessed dynamics of V. genome under selection long-term field experiment. Results In this study, was fumigated before race 1 strain (VdLs.16)...
Verticillium wilt of lettuce, caused by the soilborne pathogen dahliae, poses a serious threat to California lettuce industry. Knowledge disease development and its impact on postharvest marketability would facilitate better management affected fields. This study investigated 22 varieties harvested from two Verticillium-infested commercial fields in Salinas Watsonville, CA, 2005 using randomized complete block design. Periodic sampling monitor several crisphead field demonstrated that root...