A5015451789- Research in Cotton Cultivation
- Plant Pathogens and Fungal Diseases
- Plant Virus Research Studies
- Insect-Plant Interactions and Control
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Plant biochemistry and biosynthesis
- Insect Resistance and Genetics
- Plant tissue culture and regeneration
- Plant and Fungal Interactions Research
- Plant Pathogenic Bacteria Studies
- Toxin Mechanisms and Immunotoxins
- Hemiptera Insect Studies
- Fungal Biology and Applications
- Plant Gene Expression Analysis
- Plant Disease Management Techniques
- Mycotoxins in Agriculture and Food
- Nematode management and characterization studies
- Plant Reproductive Biology
- Allelopathy and phytotoxic interactions
- melanin and skin pigmentation
- Entomopathogenic Microorganisms in Pest Control
- Biochemical and biochemical processes
- Insect symbiosis and bacterial influences
- Hibiscus Plant Research Studies
Agricultural Research Service
2015-2024
Southern Plains Agricultural Research Center
2013-2023
United States Department of Agriculture
2007-2021
Cotton (United States)
1975-2020
Texas A&M University
1977-2013
College Station Medical Center
2011
Bayer (Belgium)
2005
Queen's University Belfast
2003
Knipling-Bushland U.S. Livestock Insects Research Laboratory
1972-1975
Beneficial microbes in the microbiome of plant roots improve health. Induced systemic resistance (ISR) emerged as an important mechanism by which selected growth–promoting bacteria and fungi rhizosphere prime whole body for ...Read More
Crop loss due to soil salinization is an increasing threat agriculture worldwide. This review provides overview of cellular and physiological mechanisms in plant responses salt. We place a time- tissue-dependent context ...Read More
Fungal wilt diseases of plants , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
Melanin biosynthesis in Verticillium dahliae Kleb. was studied with mutants deficient for normal black melanin or production of microsclerotia. Seven genetically different had apparent blocks biosynthesis. Four (brm-I to -4) produced brown microsclerotia and extruded pigments into media; three (alm-1 -3) albino Other no (nms) greatly reduced numbers (rms). Mutation alm-1 due a single recessive gene; the other melanin-deficient characters were but their genetic bases not determined. Cultures...
Absence of sources resistance to the reniform nematode, Rotylenchulus reniformis Linford & Oliveira, 1940, is a major impediment production upland cotton ( Gossypium hirsutum L.) in USA. In this study, two trispecies hybrids G. , longicalyx J.B. Hutch. B.J.S. Lee, and either armourianum Kearney or herbaceum L. were used as bridges introgress high nematode from into Introgression was accomplished by recurrent backcrosses with cytogenetic analysis early backcross generations assess...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantification of volatile terpenes glanded and glandless Gossypium hirsutum L. cultivars lines by gas chromatographyGary W. Elzen, Howard J. Williams, Alois A. Bell, Robert D. Stipanovic, S. Bradleigh VinsonCite this: Agric. Food Chem. 1985, 33, 6, 1079–1082Publication Date (Print):November 1, 1985Publication History Published online1 May 2002Published inissue 1 November 1985https://doi.org/10.1021/jf00066a015Request reuse permissionsArticle...
To determine the ability of southern green stink bug (SGSB) (Nezara viridula L.) to transmit Pantoea agglomerans into cotton (Gossypium hirsutum) bolls.An SGSB laboratory colony was kept on fresh beans. A P. variant resistant rifampicin (Rif) (strain Sc 1-R) used as opportunistic pathogen. Adult insects were individually provided beans that sterilized and then soaked in either sterile water or a suspension strain 1-R. Insects caged with an unopened greenhouse-grown boll. After 2 days, live...
A highly virulent cotton wilt pathogen, Fusarium oxysporum f. sp. vasinfectum VCG0114 (race 4) was found in West Texas 2017, after being known California since 2001. Isolates obtained from wilted plants collected 2017 Texas, 2015 China, and during 2001 to 2014 isolates historical collections including the race 4 reference isolate were characterized by soil-infestation pathogenicity assays, DNA sequence analysis, vegetative compatibility analysis. All F. belonged VCG0114. of these isolates,...
A group of 133 isolates the cotton wilt pathogen Fusarium oxysporum Schlecht f sp vasinfectum (Atk) Sny & Hans, representing five races and 20 vegetative compatibility groups within race 1 were used to determine identity, biosynthetic regulation taxonomic distribution polyketide toxins produced by this pathogen. All F secreted nonaketide naphthazarin quinones, bikaverin norbikaverin. Most (previously denoted as 1, 2 6; also called A) synthesized heptaketide naphthoquinones, nectriafurone,...
Gossypol occurs as a mixture of enantiomers in cottonseed. These exhibit different biological activities. The (−)-enantiomer is toxic to animals, but it has potential medicinal uses. Therefore, cottonseed with >95% (−)-gossypol could have biopharmaceutical applications. (+)-enantiomer shows little, if any, toxicity nonruminant animals. Thus, (+)-gossypol be more readily utilized feed for nonruminants. (+)- ratio commercial Upland (Gossypium hirsutum) usually about 3:2, whereas that Pima...
To investigate the aetiology of seed and boll rot cotton grown in South Carolina (SC).Bacteria were isolated from diseased locules bolls collected a field SC, USA tested for ability to cause comparable disease symptoms greenhouse fruit. Spontaneously generated rifampicin-resistant (Rif(r)) mutants isolates used confirmatory pathogenicity tests. Resistance antibiotic was both stable effective differentiating between an inoculated Rif(r) strain, rifampicin-sensitive contaminants and/or...
Reniform nematodes ( Rotylenchulus reniformis Linford & Oliveira) decrease U.S. production of Upland cotton Gossypium hirsutum L., 2 n = 52, 2[AD] 1 ) by more than US$100 million yr −1 We report here on the mapping a gene for extreme resistance that was introgressed from African species G. longicalyx (Hutch. Lee, 2x 26; 2F ). The responsible allele, designated Ren lon , localized to chromosome 11 first screening A‐subgenome simple sequence repeat (SSR) marker loci parental polymorphism...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPentaketide metabolites of Verticillium dahliae. 3. Identification (-)-3,4-dihydro-3,8-dihydroxy-1(2H)naphthalenone[(-)-vermelone] as a precursor to melaninRobert D. Stipanovic and Alois A. BellCite this: J. Org. Chem. 1976, 41, 14, 2468–2469Publication Date (Print):July 1, 1976Publication History Published online1 May 2002Published inissue 1 July 1976https://pubs.acs.org/doi/10.1021/jo00876a026https://doi.org/10.1021/jo00876a026research-articleACS...