Download or read book Fusarium Wilt Fusarium Oxysporum F Vasinfectum written by N. S. Mirpulatova and published by . This book was released on with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PCR based Detection of Fusarium Oxysporum F Sp Vasinfectum Race 4 and the Effect of Fusarium Oxysporum F Sp Vasinfectum Race 4 Soil Inoculum Density on Fusarium Wilt Disease Development in Cotton written by Mary Elva Yang and published by . This book was released on 2006 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of Fusarium Oxysporum F Sp Vasinfectum in the United States and Quantification of Race 4 in Soil written by Amanda Cianchetta and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-year survey was conducted to monitor the distribution of Fusarium oxysporum f. sp. vasinfectum (FOV) race 4 and to assess the diversity of genotypes of FOV throughout the U.S. cotton belt. Partial sequences of the translation elongation factor (EF-1[alpha]) region of FOV cultured from symptomatic cotton plants were compared to a database of sequences of known genotypes of FOV. Five nominal races of FOV, races 1, 2, 3, 4, and 8, and four previously recognized southeastern genotypes, LA108, LA110, LA112 and LA127/140, were identified in the United States. All were pathogenic on cotton. A unique genotype of FOV, MDS-12, was identified in Alabama, Arkansas, Mississippi and Louisiana and was characterized with additional sequencing of the phosphate permease-like protein, [beta]-tubulin and intergenic spacer regions. FOV race 4 was not detected outside of California. Fusarium wilt caused by Fusarium oxysporum f. sp. vasinfectum (FOV) race 4 is an economically important disease of cotton in California. The fungus is seedborne and nearly impossible to eradicate from soil. In order to assess densities of soilborne inoculum, a quantitative PCR method using race 4 specific primers was developed. The protocol was evaluated using samples of sterile potting mix, cotton tissue and water spiked with known quantities of FOV race 4 DNA. Soil from cotton fields with known FOV race 4 infestation was also evaluated. The qPCR protocol succeeded in detecting FOV race 4 at concentrations as low as 102 conidia/ml, a level below the threshold of disease development in greenhouse studies; however it did not detect 10 fold differences in the target DNA template added to samples at levels of 102, 103 and 104 race 4 conidia/ml.
Download or read book New Genotypes of Fusarium Oxysporum F Sp Vasinfectum from the United States written by Elizabeth Anne Holmes and published by . This book was released on 2010 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cultivar Susceptibility to the Fusarium Wilt Complex and Race Characterization of Fusarium Oxysporum F Sp Vasinfectum written by Tamara Zakayyah Scott and published by . This book was released on 2012 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Fusarium Laboratory Manual written by John F. Leslie and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time in over 20 years, a comprehensive collection of photographs and descriptions of species in the fungal genus Fusarium is available. This laboratory manual provides an overview of the biology of Fusarium and the techniques involved in the isolation, identification and characterization of individual species and the populations in which they occur. It is the first time that genetic, morphological and molecular approaches have been incorporated into a volume devoted to Fusarium identification. The authors include descriptions of species, both new and old, and provide protocols for genetic, morphological and molecular identification techniques. The Fusarium Laboratory Manual also includes some of the evolutionary biology and population genetics thinking that has begun to inform the understanding of agriculturally important fungal pathogens. In addition to practical “how-to” protocols it also provides guidance in formulating questions and obtaining answers about this very important group of fungi. The need for as many different techniques as possible to be used in the identification and characterization process has never been greater. These approaches have applications to fungi other than those in the genus Fusarium. This volume presents an introduction to the genus Fusarium, the toxins these fungi produce and the diseases they can cause. "The Fusarium Laboratory Manual is a milestone in the study of the genus Fusarium and will help bridge the gap between morphological and phylogenetic taxonomy. It will be used by everybody dealing with Fusarium in the Third Millenium." --W.F.O. Marasas, Medical Research Council, South Africa
Download or read book Population Biology of Fusarium Oxysporum F Sp Vasinfectum FOV Causal Agent of Fusarium Wilt of Cotton in the Southeastern United States written by Hannah Celeste Halpern and published by . This book was released on 2019 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium oxysporum f. sp. vasinfectum (FOV), has recently caused devastating Fusarium wilt outbreaks in cotton fields in the southeastern United States. FOV is often classified into races or genotypes, based on polymorphisms at the translation elongation factor (EF-1a) locus. The goal of this research was to use population biology to understand i) the genetic diversity and population structure, and ii) the aggressiveness of FOV causing Fusarium wilt in southeastern cotton fields. Sequence analysis of the EF-1a locus and SNPs identified through genotyping-by-sequencing revealed that populations of FOV in the southeastern U.S. are genetically diverse, but not genetically structured by EF-1a race or genotype. A greenhouse inoculation experiment identified variation in isolates' aggressiveness on cotton; these phenotypic differences were generally not associated with EF-1a sequence. These findings demonstrate that FOV is genetically and phenotypically diverse, and that EF-1a sequence polymorphisms are generally not biologically meaningful.
Download or read book Characterization of California Isolates of Fusarium Oxysporum F sp Vasinfectum written by Yumee Kim and published by . This book was released on 2004 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Population Ecology and Infection Process of Fusarium Oxysporum F Sp Vasinfectum Causing Vascular Wilt of Cotton in Australia written by Bo Wang and published by . This book was released on 1998 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seed Treatments and Detection of Fusarium Oxysporum F Sp Vasinfectum Race 4 written by Hung Kim Doan and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium wilt of cotton, caused by the soilborne fungus Fusarium oxysporum f. sp. vasinfectum, is a widespread disease occurring in most cotton-growing regions of the world. Fusarium wilt occurs in all domesticated cotton. Currently, six nominal races are recognized: 1, 2, 3, 4, 6, and 8, as well as many un-named genotypes worldwide. Many are widespread in the U.S., but race 4, which is highly virulent, is apparently restricted to California. Race 4 is found in an increasing number of fields in California due in part to seed-borne dissemination. The first aim of this study was to evaluate the efficacy of hot water treatments alone or in conjunction with fungicides and other treatments to reduce the viability of FOV race 4 in infected cotton seed. The second aim was to develop and evaluate a rapid and reliable molecular diagnostic assay, the AmplifyRP® Acceler8(TM), for the direct detection of FOV race 4 in cotton tissue. In the seed treatment assay, a 1 hour immersion of seed in water or sterile 30% potato dextrose broth (PDB) at 24°C followed by a 20 minute immersion in a 60°C solution containing four fungicides (azoxystrobin, fludioxonil, thiabendazole, and thiophanate) or thiophanate alone were the most effective pretreatment-treatment combinations in reducing FOV in seed and avoiding loss of seed germination and vigor. The incidence of FOV in the seed was reduced by approximately 86% without reducing seed germination and vigor based on recovery of the fungus on petri plates and greenhouse grow-out assays. FOV was completely eliminated from infected seed when the seed was pretreated in water at 24°C followed by a 20 minute immersion in a solution of thiophanate heated to 70°C. With this treatment, seed germination was reduced by 36% and vigor was reduced by 38%. The AmplifyRP® Acceler8(TM) diagnostic assay consistently detected FOV race 4 from all infected tissue samples. The test is rapid, simple and more sensitive than conventional PCR. The AmplifyRP® Acceler8(TM) diagnostic assay detected DNA from FOV race 4 at concentrations of 1 ng/[mu]L and above. In addition, it did not amplify DNA from other known FOV races (races 1, 2, 3, 6, and 8). The whole process from sample preparation to reading the results was completed in as little as 30 minutes. The test detected FOV race 4 in cotton taproots, petioles, and stems.
Download or read book Invasive Stink Bugs and Related Species Pentatomoidea written by J.E. McPherson and published by CRC Press. This book was released on 2018-01-17 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key features: Presents a brief history of past classifications, a summary of present classification, and speculation on how the classification may evolve in the future Includes keys for the identification of families and subfamilies of the Pentatomoidea and for the tribes in the Pentatomidae Explains transmission of plant pathogens and concepts of pathology and heteropteran feeding for the non-specialist Provides an extensive literature review of transmission by stink bugs of viral, bacterial, fungal, and protozoan organisms that cause diseases of plants Discusses the diversity of microbial symbionts in the Pentatomidae and related species, showing how microorganisms underpin the evolution of this insect group Reviews semiochemicals (pheromones, kairomones, allomones) of the Pentatomoidea and their vital role in the life histories of pest and beneficial species and their exploitation by natural enemies of true bugs Covers past, current, and future control options for insects, with a focus on stink bugs and related heteropterans The Superfamily Pentatomoidea (stink bugs and their relatives) is comprised of 18 families with over 8,000 species, the largest of which is the family Pentatomidae (about 5,000 species). These species primarily are phytophagous, and many cause tremendous economic damage to crops worldwide. Within this superfamily are six invasive species, two that occur worldwide and four that are recent invaders in North America. Once established in new geographic regions, these species have increased their numbers and geographic distributions dramatically, causing economic damage totaling billions of dollars. Invasive Stink Bugs and Related Species (Pentatomoidea): Biology, Higher Systematics, Semiochemistry, and Management is the first book that presents comprehensive coverage of the biology of invasive pentatomoids and related true bug species and addresses issues of rapidly growing economic and environmental concerns. Containing the contributions of more than 60 stink bug specialists from 15 countries, this book provides a better understanding of the biology and economic importance of these invasive species, why they became invasive, and how their continued geographical expansion is likely to affect numerous agricultural systems and natural environments. Including over 3,500 references, this authoritative work serves as an access point to the primary literature on their life histories, higher systematics, diapause and seasonal cycles, pathogens, symbionts, semiochemistry, and pest management control strategies for pentatomoid bugs.
Download or read book Source of Resistance to Fusarium Wilt Fusarium Oxysporum F sp Vasinfectum and Root Knot Nematode Meloidogyne Incognita in Okra Abelmoschus Esculentus L Moench written by RANGAPPA C. N and published by . This book was released on 1993 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cotton World Markets Trade written by and published by . This book was released on 1998 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fungal Wilt Diseases of Plants written by Marshal Mace and published by Elsevier. This book was released on 2012-12-02 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungal Wilt Diseases of Plants focuses on wilt diseases caused by the fungal genera Verticillium, Fusarium, and Ceratocystis. Special attention is given to the interactions of physiological, biochemical, and anatomical factors, as these relate to pathogenesis and mechanisms of disease resistance. Organized into 16 chapters, this book begins with a description, in a historical perspective, of the major research themes in fungal wilt diseases. It then looks into the worldwide status of this plant disease. The three subsequent chapters describe the epidemiology and life cycle of the major fungal wilt pathogens in Fusarium, Verticillium, and Ceratocystis. This book also provides an in-depth view of the genetics and biochemistry of these pathogens; the nature of pathogenesis and the effects of wilt pathogens on host-water relations; and the sources and genetics of host resistance in field and fruit crops, vegetable crops, and shade trees. Other chapters are dedicated to the biochemistry, physiology, and the anatomical aspects of resistance and to the progress in the biological and chemical control of these pathogens. This text will be of great value to graduate students and senior research scientists in plant pathology, physiology, and biochemistry, who are specifically involved in studying wilt diseases and host-parasite interactions. It will provide them the detailed background information needed to supplement their specialized research interests.
Download or read book Fusarium Recent Studies written by Ibrokhim Y. Abdurakhmonov and published by BoD – Books on Demand. This book was released on 2024-06-05 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium disease in crops is a major concern for agricultural production worldwide. The fungi primarily target cereal crops, including wheat, maize, barley, and rice, but can also affect other plants. Fusarium species produce mycotoxins, which are toxic compounds that contaminate crops, rendering them unsuitable for consumption or feed. Written by international researchers, Fusarium – Recent Studies presents an overview of recent advances in Fusarium studies that help to understand the pathogen for effective crop management practices.
Download or read book Fusarium Wilt of Banana written by Randy C. Ploetz and published by American Phytopathological Society. This book was released on 1990 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium wilt of banana: some history and current status of the disease; Importante of fusarium wilt in different banana-growing regions; Taxonomy of fungi in the genus fusarium with emphasis on fusarium oxysporum; Genetic exchange within sexual and asexual populations of the genus fusarium; Molecular genetics of plant pathogenic fusarium oxysporum; Using karyotype variability to investigate the origins and relatednes of isolates of fusarium oxysporum f. sp. cubense; Population biology of fusarium oxysporum f. sp. cubense; Biological control of diseases caused by fusarium oxysporum; Influence of mineral nutrition on fusarium wilt: a proposed mechanism involving cell water relations; Host responses to the pathogen; Banana breeding and fusarium wilt; Breeding bananas and plantains for resistance to fusariu m wilt: the track record; Somaclonal resistance in cavendish banana to fusarium wilt; Baseline tissue and cell culture studies for use in banana improvement schemes.
Download or read book Fusarium written by Seyed Mahyar Mirmajlessi and published by BoD – Books on Demand. This book was released on 2022-05-18 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium is a large cosmopolitan genus of ascomycete fungi that are among the most important toxigenic plant pathogens causing seed and soil-borne diseases in a wide variety of agricultural crops worldwide. Fusarium species are broadly distributed in soil, root and plant tissues, and other organic substrates. Almost all species are able to generate mycotoxins, as secondary metabolites, that cause different physiological responses in plants. This book provides an overview of recent research on Fusarium species in the fields of metabolites, pathogenicity, plant-pathogen interactions, and management strategies in agricultural practices.
