James R. Myers

ORCID: 0000-0003-0976-144X
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About
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Research Areas
  • Plant pathogens and resistance mechanisms
  • Plant Pathogenic Bacteria Studies
  • Plant Virus Research Studies
  • Agronomic Practices and Intercropping Systems
  • Genetics and Plant Breeding
  • Agricultural pest management studies
  • Plant Pathogens and Fungal Diseases
  • Genetic and Environmental Crop Studies
  • Soybean genetics and cultivation
  • Plant tissue culture and regeneration
  • Berry genetics and cultivation research
  • Legume Nitrogen Fixing Symbiosis
  • Advances in Cucurbitaceae Research
  • Plant Pathogens and Resistance
  • Plant-Microbe Interactions and Immunity
  • Crop Yield and Soil Fertility
  • Plant Reproductive Biology
  • Plant Disease Resistance and Genetics
  • Plant Disease Management Techniques
  • Antioxidant Activity and Oxidative Stress
  • Asthma and respiratory diseases
  • Chromosomal and Genetic Variations
  • Seed Germination and Physiology
  • Plant Parasitism and Resistance
  • Agricultural Practices and Plant Genetics

Oregon State University
2015-2025

University of Idaho
1988-2018

North Dakota State University
2016

Colorado State University
2016

University of Wisconsin–Madison
1988-2009

Madison Area Technical College
2009

Cornell University
2009

Auburn University
2009

University of Minnesota Medical Center
2008

Chevron (United States)
2006

The effects of selection on genome variation were investigated and visualized in tomato using a high-density single nucleotide polymorphism (SNP) array. 7,720 SNPs genotyped collection 426 accessions (410 inbreds 16 hybrids) over 97% the markers polymorphic entire collection. Principal component analysis (PCA) pairwise estimates F(st) supported that inbred represented seven sub-populations including processing, large-fruited fresh market, vintage, cultivated cherry, landrace, wild S....

10.1371/journal.pone.0045520 article EN cc-by PLoS ONE 2012-09-20

Cultivated tomatoes ( Solanum lycopersicum L.) produce anthocyanins in vegetative tissues and certain flavonols can be found the fruit. Some related wild species do fruit, this trait has been transferred into cultivated tomato. Fruit with genes Abg , Aft atv exhibit varying degrees of anthocyanin production epidermis, but not fruit pericarp. these alleles various combinations were analyzed to characterize anthocyanidin profile, moieties, total content. In general, combining either or...

10.21273/jashs.133.2.262 article EN Journal of the American Society for Horticultural Science 2008-03-01

White mold, caused by the fungus Sclerotinia sclerotiorum (Lib.) de Bary, is a major disease that limits common bean production and quality worldwide. The host-pathogen interaction complex, with partial resistance in host inherited as quantitative trait low to moderate heritability. Our objective was identify meta-QTL conditioning white mold from individual QTL identified across multiple populations environments. physical positions for 37 were 14 recombinant inbred bi-parental (six new,...

10.1371/journal.pone.0171685 article EN public-domain PLoS ONE 2017-02-15

For many horticultural crops, selection is based on quality as well yield. To investigate the distribution of trait variation and identify those attributes appropriate for developing indices, we collected organized information related to fruit size, shape, color, soluble solids, acid, yield traits 143 processing tomato ( Solanum lycopersicum L.) lines from North America. Evaluation germplasm panel was conducted in a multiyear, multilocation trial. Data were stored flat-file format ontology...

10.21273/jashs.137.6.427 article EN Journal of the American Society for Horticultural Science 2012-11-01

Analysis of 1980-1985 death certificate data for the United States indicated that an average 369 occupational deaths per year involved agricultural machinery as external cause death. Out all machine-related deaths, tractors accounted 69 percent. Over half these tractor-related were rollovers. There is a need public health programs to affect greater use rollover protective structures (ROPS) on farm tractors.

10.2105/ajph.81.6.766 article EN American Journal of Public Health 1991-06-01

Globally, pea (Pisum sativum L.) is an important temperate legume crop for food, feed and fodder, many breeding programs develop cultivars adapted to these end-uses. In order assist development efforts, we assembled the USDA Pea Single Plant Plus Collection (PSPPC), which contains 431 P. accessions with morphological, geographic taxonomic diversity. The collection was characterized genetically in maximize its value trait mapping genomics-assisted breeding. To that end, used...

10.1038/hortres.2017.17 article EN cc-by Horticulture Research 2017-04-26

Organic agriculture requires cultivars that can adapt to organic crop management systems without the use of synthetic pesticides as well genotypes with improved nutritional value. The aim this study encompassing 16 experiments was compare 23 broccoli for content phytochemicals associated health promotion grown under and conventional in spring fall plantings two growing regions US (Oregon Maine). quantified included: glucosinolates (glucoraphanin, glucobrassicin, neoglucobrassin), tocopherols...

10.1371/journal.pone.0095683 article EN cc-by PLoS ONE 2014-07-16

Bean common mosaic virus (BCMV) exists as a complex of strains classified by reactions to resistance genes found in bean (Phaseolus vulgaris); seven BCMV pathotypes have been distinguished thus far, numbered I VII. Virus genetic determinants involved pathogenicity interactions with not yet identified. Here, we describe the characterization two novel field isolates that helped narrow down these interacting specific P. vulgaris factors. Based on biological differentials, both were belonging...

10.1094/phyto-08-13-0243-r article EN other-oa Phytopathology 2014-06-10

Resistance against Bean common mosaic virus (BCMV) in Phaseolus vulgaris is governed by six recessive resistance alleles at four loci. One of these alleles, bc-3, able to protect P. all BCMV strains and other potyviruses; bc-3 was identified as the eIF4E allele carrying mutated eukaryotic translation initiation factor gene. Here, we characterized a novel isolate 1755a that overcome bc-2 bean. Thus, it displayed pattern interactions with genes vulgaris, assigned new pathogroup, PG-VIII. The...

10.1094/phyto-04-15-0108-r article EN other-oa Phytopathology 2015-07-21

Snap bean ( Phaseolus vulgaris L.) breeding programs are tasked with developing cultivars that meet the standards of vegetable processing industry and ultimately consumer, all while matching or exceeding field performance existing cultivars. While traditional methods have had a long history meeting these requirements, genetic marker technology, combined knowledge important quantitative trait loci (QTL), can accelerate efforts. In contrast to dry bean, snap immature pods seeds consumed as...

10.21273/jashs.141.2.131 article EN Journal of the American Society for Horticultural Science 2016-03-01

In this study, 36 carrot breeding lines and cultivars widely used for organic production were grown 4 years in two locations under conventionally managed trials. Highly significant genotypic main effects genotype × year and, to a lesser extent, location interactions observed all traits, including harvest root top weight as well height width measured at early season, midseason, the time of harvest. contrast, management systems most system not significant. Broad sense heritability...

10.21273/jashs05459-24 article EN cc-by-nc-nd Journal of the American Society for Horticultural Science 2025-03-01

Tomato responds to induced systemic resistance (ISR) by the beneficial fungus Trichoderma harzianum against foliar pathogens in a genotype specific manner. This study investigates mechanisms underlying these differences using pathogen Botrytis cinerea and RNA-seq. Solanum pimpinellifolium LA 1589 (responsive) S. lycopersicum cv. Wisconsin 55 (unresponsive) were treated with T. before inoculation B. characterize priming capabilities. The harzianum-treated samples exhibited reduced disease...

10.1094/phyto-07-24-0240-r article EN Phytopathology 2025-03-31

BACKGROUND Mutations in the tumor suppressor gene p53 have been associated with resistance to ionizing radiation and chemotherapy. Paclitaxel concurrent (paclitaxel/RT) achieve high response rates locally advanced nonsmall cell lung carcinoma (NSCLC). In vitro data animal studies suggest that paclitaxel may a unique ability activate apoptosis absence of wild-type function. The authors sought determine whether mutations affect paclitaxel/RT patients NSCLC. METHODS Thirty Stage IIIA or IIIB...

10.1002/(sici)1097-0142(19960915)78:6<1203::aid-cncr6>3.0.co;2-a article EN Cancer 1996-09-15

To help in clarifying the conflicting data on role of tracheobronchial micro flora chronic bronchitis, a homogeneous group clinically stable patients with obstructive bronchitis was characterized by transtracheal aspiration. Their mean percentage ratio forced expiratory volume 1 sec to vital capacity 45%. The results were that (1) bacterial present only 50% patients, (2) viridans streptococci bacteria most frequently isolated, and (3) presence or absence significantly associated amount...

10.1093/infdis/145.2.234 article EN The Journal of Infectious Diseases 1982-02-01

ABSTRACT Root rot diseases of bean ( Phaseolus vulgaris L.) are a constraint to dry and snap production. We developed the RR138 RI mapping population from cross OSU5446, susceptible line that meets current processing industry standards, RR6950, root resistant with small brown seeds. evaluated beginning in F 6 generation for resistance Fusarium solani f. sp. phaseoli (Burk.) Oregon Aphanomyces euteiches (Drechsler) Wisconsin. The was set architecture traits at location. three seasons, whereas...

10.2135/cropsci2014.11.0805 article EN cc-by-nc-nd Crop Science 2015-08-03

Two hundred forty-six snap bean genotypes and 49 dry beans representing both centers of domestication six races with materials from Europe, Asia, the Americas were genotyped using a single nucleotide polymorphism (SNP) array. The data was analyzed for expected heterozygosity, K-means clustering, principal components, phylogenetic relationships, population substructure. When all gene pools assembled, heterozygosity roughly equivalent to carefully chosen panel demonstrating genetic richness in...

10.3390/genes9120587 article EN Genes 2018-11-28
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