A5010196060- Plant Pathogens and Fungal Diseases
- Plant pathogens and resistance mechanisms
- Plant Pathogens and Resistance
- Agronomic Practices and Intercropping Systems
- Plant-Microbe Interactions and Immunity
- Plant Disease Management Techniques
- Wheat and Barley Genetics and Pathology
- Plant Disease Resistance and Genetics
- Powdery Mildew Fungal Diseases
- Genetic Mapping and Diversity in Plants and Animals
- Plant Parasitism and Resistance
- Yeasts and Rust Fungi Studies
- Genetic diversity and population structure
- Mycotoxins in Agriculture and Food
- Plant Pathogenic Bacteria Studies
- Genetic and phenotypic traits in livestock
- Constructed Wetlands for Wastewater Treatment
- Soil Geostatistics and Mapping
- Smart Agriculture and AI
- Building materials and conservation
- Yersinia bacterium, plague, ectoparasites research
- Advanced Photocatalysis Techniques
- Metal-Organic Frameworks: Synthesis and Applications
- Conservation Techniques and Studies
- Plant responses to water stress
China Agricultural University
2014-2024
Inner Mongolia University of Technology
2021-2024
University of Chinese Academy of Sciences
2023
Institute of Modern Physics
2023
Chinese Academy of Sciences
2023
Shenyang Pharmaceutical University
2022
Agricultural Research Service
2016-2018
Dale Bumpers National Rice Research Center
2018
Beijing Forestry University
2017
United States Department of Agriculture
2016
Extensive studies have been conducted on the carpogenic germination of Sclerotinia sclerotiorum, but in S. minor has not studied adequately. It remains unclear why apothecia this pathogen seldom observed nature. In study, a new method was developed to produce absence soil or sand, and without preconditioning recorded for 95 96 sclerotiorum isolates tested. Carpogenic two species compared under variety temperature, moisture, burial depths, short periods high temperature low moisture. The...
Cultural heritage objects, including traditional Chinese polychrome paintings on architectures (Caihua) and wooden architectural components, frequently exhibit surface defects that are highly sensitive to environmental factors, resulting in progressive deterioration. However, due limited data acquisition methods quantitative analysis models, the stability risks of such as cracks during changes remain unclear. This study integrates photogrammetry digital image processing investigate...
Abstract Large ex situ germplasm collections of plants generally contain significant diversity. A set 700 well-conserved Chinese fir ( Cunninghamia lanceolata (Lamb.) Hook) clones from six provinces in southern China the gene bank Longshan State Forest, was analyzed using 21 simple sequence repeat markers, with aim assessing genetic diversity these resources. Genetic analysis revealed extensive variation among accessions, an average 8.31 alleles per locus and a mean Shannon index 1.331....
ABSTRACT The epidemiology of lettuce downy mildew has been investigated extensively in coastal California. However, the spatial patterns disease and distance that Bremia lactucae spores can be transported have not determined. During 1995 to 1998, we conducted several field- valley-scale surveys determine this Salinas valley. Geostatistical analyses survey data at both scales showed influence range incidence one location on other locations was between 80 3,000 m. A linear relationship...
Experiments to identify the factors affecting survival of Bremia lactucae sporangia after deposition on lettuce leaves were conducted in growth chambers and outdoors under ambient conditions. Lettuce seedlings at four-leaf stage inoculated with B. dry Sporangia deposited incubated different temperature relative humidity (RH) combinations, exposed 100, 50, 25, 0% sunlight second experiment, artificial lights wavelength ranges UVA (315 400 nm), UVB (280 315 or fluorescent light third...
To understand the geographical distribution of lettuce drop incidence and structure Sclerotinia minor S. sclerotiorum populations, commercial fields were surveyed in Salinas, San Joaquin, Santa Maria Valleys California. Lettuce incidence, pathogen species, mycelial compatibility groups (MCGs) determined analyzed using geostatistic information system tools. was lowest Joaquin Valley, not significantly different between other two valleys. Semivariogram analysis revealed that spatially...
Survival of sclerotia Sclerotinia minor and S. sclerotiorum was compared in irrigated fields during the summer two major lettuce production areas California. More than 50% with 4 35% remained viable after 24 weeks burial at 15 5 cm depths, respectively, San Joaquin Valley while >80% survived Salinas for both species. The results explain part lower infections from Valley. To identify factors that contribute to rapid decline viability sclerotia, effects soil moisture, temperature, oxygen...
Verticillium wilt, caused by dahliae, is a destructive disease in lettuce, and the pathogen seedborne. Even though maximum seed infestation rates of <5% have been detected commercial lettuce lots, it necessary to establish acceptable contamination thresholds prevent introduction establishment production fields. However, inoculum into fields for experimental purposes determine its long term effects undesirable. Therefore, we constructed simulation model study spread wilt following from...
Rice blast, caused by the fungus Magnaporthe oryzae, is most damaging disease for rice worldwide. However, reactions of to M. oryzae at different growth stages are largely unknown. In present study, two temperate japonica cultivars, M-202 and Nipponbare, were inoculated synchronously vegetative stages, V1 V10. Plants each stage from reproductive R8 with race (isolate) IB-49 (ZN61) under controlled conditions. Disease recorded 7 days postinoculation measuring percentage diseased area all...
In this study, spatial analyses were conducted at three different scales to better understand the epidemiology of rice blast, a major disease caused by Magnaporthe oryzae. At regional scale, across production regions in China, blast incidence was monitored on 101 dates 193 stations from 10 June September during 2009 2014, and surveyed 143 fields 2016; county surveys done covering one five counties 2015 and, field evaluated six 2016. Spatial cluster hot spot geographic information system...
With the rapid development of deep learning, recognition rice disease images using neural networks has become a hot research topic. However, most previous studies only focus on modification learning models, while lacking to systematically and scientifically explore impact different data sizes image task for diseases. In this study, functional model was developed predict relationship between size dataset accuracy rate recognition.
ABSTRACT The temporal and spatial dynamics of Sclerotinia minor sclerotia the resulting incidence lettuce drop were studied under furrow irrigation with conventional tillage subsurface-drip minimum during 1993-95. Lettuce crops grown each year spring fall seasons. All plants inoculated immediately after thinning in 1993. Grids 24 contiguous quadrats (1 by 1 m(2)) demarcated centers 150-m(2) plot. quadrat was evaluated season prior to harvest. One soil sample (100 cm(3)) collected from at...
Major blast resistance (R) genes confer in a gene-for-gene manner. However, little information is available on interactions between R genes. In this study, two rice genes, Pi-ta and Pi-b, other minor quantitative trait loci (QTLs) were investigated recombinant inbred line (RIL) population comprising 243 RILs from Cybonnet (CYBT) × Saber (SB) cross. CYBT has the gene SB Pi-b. Ten differential isolates of four Magnaporthe oryzae races (IB-1, IB-17, IB-49, IE-1K) used to evaluate disease...
ABSTRACT The effect of temperature on infection lettuce by Bremia lactucae was investigated in controlled environment studies and the field. In conditions, seedlings inoculated with B. were incubated at 15, 20, 25, or 30 degrees C during a 4-h wet period immediately after inoculation same temperatures an 8-h dry postinoculation 15 C. High periods reduced subsequent disease incidence. Historical data from field 1991 1992, which days without had been identified, analyzed comparing average air...
Previous studies in coastal California suggested that morning leaf wetness duration and temperature immediately after the prolonged period affect infection of lettuce by downy mildew pathogen, Bremia lactucae. In this study, spatial analysis tools a geographic information system were used to interpolate disease assessment data then relate them weather variables measured 1995 1997 at stations Salinas Valley. Among monitored these stations, midday (10:00 A.M. 2:00 P.M.) was related most...
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most destructive diseases wheat in China. Conjunction area Gansu, Sichuan and Shaanxi, acting as over-summering over-wintering regions for pathogen, plays a unique critical role epidemics this disease Because complexity terrains environmental conditions within conjunction area, studies on population structure, gene flow between local subpopulations maintenance genetic structure over time are important to...
Claviceps purpurea is an important ovary-infecting pathogen that replaces seed with sclerotia in Kentucky bluegrass grown for seed. Sclerotia overwinter the soil and germinate spring to produce ascospores infect grass ovaries. To better understand environmental conditions affecting ascospore production, effects of preconditioning cold treatment subsequent incubation temperature on germination were determined growth chambers under controlled conditions. Preconditioning was essential only...
Abstract A new method for analysing spatial patterns was designed based on the variance of moving window averages (VMWA), which can be directly calculated in geographical information systems or a spreadsheet program (e.g. MS Excel). Different types artificial data were generated to test method. Regardless types, VMWA correctly determined mean cluster sizes. This also employed assess historical plant disease survey encompassing both airborne and soilborne diseases. The results obtained using...
Fungal colonies initially extend exponentially and reach a constant linear extension rate determined solely by their growth in the peripheral zone. However radial rates of Sclerotinia sclerotiorum S. minor accelerate over time on PDA. Experiments were conducted to analyze variable two species compare them with those Verticillium dahliae Cladosporium sp. In addition, effects starter disk size, position parent colony, age concentration potato dextrose broth incubation temperature also...
Synchronized maturation of ascospores Sclerotinia sclerotiorum is desirable for establishing a transformation system, conducting genetic analyses the pathogen, defining precise epidemiological roles and screening plant germplasm resistance. In general, fresh apothecia collected from germinated sclerotia contained primarily immature or discharged asci. This study was undertaken to investigate whether asci could be enhanced by incubation excised determine effects factors such as temperature,...
Increasing demands for value-added salad products have triggered revolutionary changes in the production practices of vegetable crops recent years. One pivotal is adaptation 2-m-wide beds increased biomass per unit area. The move away from traditional 1-m-wide raised cool-season and associated irrigation potentially can a major influence on diseases affecting vegetables. To assess potential impacts this shift lettuce drop caused by Sclerotinia minor S. sclerotiorum, two bed widths different...