Download or read book Pea Seed borne Mosaic Virus PSbMV in Field Peas and Lentils written by Michael Johannes Wunsch and published by . This book was released on 2014 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pea seed-borne mosaic virus (PSbMV) is an economically damaging viral pathogen of field peas and lentils that can cause significant losses in seed yield and quality, especially when infections occur before or during bloom. It has been observed on field peas and lentils in North Dakota and on field peas in Montana. PSbMV is distributed worldwide and it presumably was introduced to North Dakota and Montana on seed imported from other regions. PSbMV is seed-transmitted and spread between plants by aphids. When aphid populations are high, planting even low levels of infected seed can result in severe epidemics. Infested seed and the movement of aphids from infested crops are important contributors to the local spread of PSbMV.

Download or read book Characteristics of the Lentil Strain of Pea Seedborne Mosaic Virus written by Jody Jellison Goodell and published by . This book was released on 1983 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lentil strain of pea seedborne mosaic virus, PSbMV-L, was distinguished from the standard isolates of PSbMV by a natural inoculum reservoir in lentil seed and by separate resistance genes in Pisum and Lens. PSbMV-L was intermediate in symptom severity between the standard and New Zealand isolates of PSbMV. Seed transmission rates up to 16.7% were observed for PSbMV-L in seed increase plots of infected lentil accessions, but the virus was not detected in commercial lentil plantings. The virus was nonpersistently transmitted by Acyrthosiphon pisum. Maximum rates of aphid transmission occurred with acquisition access periods of 3 to 5 minutes and ranged from 80 to 100%. Aphid transmission rates decreased with increasing temperature. Apparent trimodal transmission of PSbMV-L was observed. PSbMV-L is characterized by intrinsic particle instability. Partial purification was obtained by extracting infected lentil leaves in a neutral buffer, clarification with 7.5% chloroform, centrifugation through PEG (6 %)- sucrose (35%) cushions and equilibrium centrifugation in CsC1 gradients. The absorbance ratio 260/280 was 1.15. PSbMV-SL25 and PSbMV-L were indistinguishable on the basis of protein subunit molecular weight and could not be differentiated using classical serological techniques. The strains could be separated by quantitative ELISA using polyclonal sera produced in rabbit or chicken. Attempts to achieve greater antibody specificity were made with spleen cells from previously immunized mice that were fused with myoloma cells to create antibody-secreting hybridomas. The resultant colonies were screened using a modified ELISA against PSbMV-SL25 and PSbMV-L for the presence of specific antibody production. Selected colonies were expanded. The molecular weight of PSbMV-L RNA was estimated at 3.5 million. DNA complementary to PSbMV-C4 RNA was prepared using the random primer method of Taylor et al. Hybridization kinetics with PSbMV-L, PSbMV-SL25 and BYMV-Gil RNA were studied using Sl-nuclease assays. The lentil strain showed significantly lower levels of hybridization than the homologous control. Heterologous hybridization was severely decreased when the stringency of the assay conditions was increased.

Download or read book Seed Borne Diseases of Agricultural Crops Detection Diagnosis Management written by Ravindra Kumar and published by Springer Nature. This book was released on 2020-05-18 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global population is increasing rapidly, and feeding the ever-increasing population poses a serious challenge for agriculturalists around the world. Seed is a basic and critical input in agriculture to ensure global food security. Roughly 90 percent of the crops grown all over the world are propagated by seed. However, seed can also harbour and spread pathogens, e.g. fungi, bacteria, nematodes, viruses etc., which cause devastating diseases. Seed-borne pathogens represent a major threat to crop establishment and yield. Hence, timely detection and diagnosis is a prerequisite for their effective management. The book "Seed-Borne Diseases of Agricultural Crops: Detection, Diagnosis & Management" addresses key issues related to seed-borne/transmitted diseases in various agricultural crops. Divided into 30 chapters, it offers a comprehensive compilation of papers concerning: the history of seed pathology, importance of seed-borne diseases, seed-borne diseases and quarantine, seed health testing and certification, detection and diagnosis of seed-borne diseases and their phytopathogens, host-parasite interactions during development of seed-borne diseases, diversity of seed-borne pathogens, seed-borne diseases in major agricultural crops, non-parasitic seed disorders, mechanisms of seed transmission and seed infection, storage fungi and mycotoxins, impact of seed-borne diseases on human and animal health, and management options for seed-borne diseases. We wish to thank all of the eminent researchers who contributed valuable chapters to our book, which will be immensely useful for students, researchers, academics, and all those involved in various agro-industries.

Download or read book Inheritance of Resistance to the Lentil Strain of Pea Seedborne Mosaic Virus in Pisum Sativum L written by Kathryn T. Kasimor and published by . This book was released on 1988 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inheritance mode of pea-resistance to the Lentil Strain of Pea Seedborne Mosaic Virus (PSbMV-L) was studied. In addition, commercial pea cultivars, Plant Introduction (P.I.) lines and Oregon State University (OSU) breeding lines were tested for susceptibility to this virus. These lines were also tested for their reaction to Bean Yellow Mosaic Virus (BYMV) and pathotype 1 of Pea Seedborne Mosaic Virus (PSbMV-Pl) to further elucidate the relationships of Pisum resistance to the three viruses. Susceptible cultivars, 'Sounder', 'Abador', 'Quincy' and 'Avon' were hybridized with resistant cultivars, 'Little Marvel' and OSU B445-66. Data on reaction to PSbMV-L inoculation were obtained for Fl, F2, and F3 progeny and selected backcrosses. Fl tests indicated that resistance was recessive. Most F2 populations segregated as ratios of 3 susceptible: 1 resistant indicating that a single recessive gene controls resistance. Populations of most F3 families fit ratios of 3 susceptible or segregating: 1 resistant. The F3 family data fit ratios of 1 susceptible: 2 segregating: 1 resistant in some of the tests. In remaining tests, failure to fit this expected ratio was assumed to be due to random escapes (susceptible, but not infected), or to a klendusic reaction in progenies from 'Quincy'. Segregation of backcrosses from two crosses in a 1 susceptible: 1 resistant ratio supported the single recessive gene hypothesis. Of 202 commercial cultivars screened screened for PSbMV-L resistance, 144 were resistant and 58 were susceptible. Cultivars resistant to PSbMV-L were also resistant to BYMV, and cultivars susceptible to PSbMV-L were susceptible to BYMV except for 'Quincy' and 'Avon', which were susceptible to PSbMV-L but resistant to BYMV. All of 9 OSU lines and all 32 of selected P.I. lines tested were resistant to PSbMV-L. The P.I. lines had been previously tested and were known to be resistant to PSbMV-Pl. All 9 OSU breeding lines and all but one P.I. line were resistant to BYMV, indicating a possible linkage relationship between resistance to PSbMV-L and BYMV. Three of 178 cultivars, 27 of 32 P.I. lines, and all of 9 OSU breeding lines tested were resistant to both PSbMV-Pl and PSbMV-L. The results suggested that there is a tendency for resistance to PSbMV-Pl and resistance to PSbMV-L to be associated in pea cultivars.

Download or read book Viral Diseases of Field and Horticultural Crops written by L. P. Awasthi and published by Elsevier. This book was released on 2023-09-20 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viral Diseases of Field and Horticultural Crops details the fundamental and applied aspects of the viral diseases of field and horticultural crops. The book opens with a historical introduction to plant virology, important plant virologists, and landmarks. It continues with systematic coverage of viral diseases, their economic significance, disease symptoms, host range, mode of transmission, diagnostic techniques, geographic distribution, epidemiology, yield losses, and control and management of the disease. Contributions from an international group of virologists with a wide range of academic, research, professional, and specialized backgrounds in plant virology makes Viral Diseases of Field and Horticultural Crops a comprehensive and must-have resource for those engaged in the study and research of plant virology, microbiology, and plant pathology particularly viral diseases and their impact on field and horticultural crops. Provides virus characterization according to the disease pattern and symptoms they cause Covers viral diseases of cereals, oil seeds, legumes, commercial crops, spices and condiments, medicinal and aromatic crops, forage crops, vegetable crops, fruit crops, tree nuts, among others Discusses advances like applications in nanotechnology, molecular techniques for the detection and characterization of plant viruses, and the development of technologies for detecting plant viruses

Download or read book The Plant Disease Reporter written by and published by . This book was released on 1978 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pea Seed borne Mosaic written by Walter R. Stevenson and published by . This book was released on 1972 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mapping of the Pea Seed borne Mosaic Virus PSbMV Viral Determinant of Resistance in Pisum Sativum Conferred by the Recessive Resistance Gene Sbm 2 written by Charlotte Kristiane Hjulsager and published by . This book was released on 2002 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological and Molecular Variation Among Isolates of Pea Seed Borne Mosaic Virus written by Valeria Anna Torok and published by . This book was released on 2001 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sixteen pea seed borne mosaic virus (PSbMV) isolates were collected between 1995 and 1998. These isolates were biologically distinct yet serologically indistinguishable. The conclusion is that PSbMV is widespread and occurs at a low incidence in Australia. Reports sequence information on new isolates of PSbMV which has allowed genomic regions to be identified which distinguish PSbMV pathotypes and isolates; and, to the development of PSbMV nucleic acid hybridisation and RT-PCR assays.

Download or read book Studies on Transmission of Pea Seed borne Mosaic Virus by Aphids and the Mechanism of Transmission written by Wa-lee Lim and published by . This book was released on 1976 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular and Functional Characterization of Transgenic Peas Pistum Sativum L Containing Coat Protein CP Genes from Pea Seed borne Mosaic Virus PSBMV and Pea Enation Mosaic Virus PEMV written by Ashapurno Biswas and published by . This book was released on 2005 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pests Diseases and Disorders of Peas and Beans written by Anthony Biddle and published by Elsevier. This book was released on 2007-04-02 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the most important pathogens, this handbook provides clear, concise descriptions of the symptoms and cycles of diseases, their distribution and economic importance and advice on their control. The text is illustrated with some 300 color photographs of affected crops to aid in the rapid identification of disease. The book also includes 'pest profiles' that identify, with the use of color photographs, the pests that commonly prey on pea and bean crops. -Problem oriented organization -High quality color photos -Handy size for practical use -300 color illustrations

Download or read book Plant Breeding Abstracts written by and published by . This book was released on 1996-07 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactions Between Pea Seed borne Mosaic Virus Pathotype 1 and Pisum Sativum Resistance Gene Sbm 1 written by Karen E. Keller and published by . This book was released on 1995 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genomic Designing for Biotic Stress Resistant Pulse Crops written by Chittaranjan Kole and published by Springer Nature. This book was released on 2022-03-18 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biotic stresses cause yield loss of 31-42% in crops in addition to 6-20% during post-harvest stage. Understanding interaction of crop plants to the biotic stresses caused by insects, bacteria, fungi, viruses, and oomycetes, etc. is important to develop resistant crop varieties. Knowledge on the advanced genetic and genomic crop improvement strategies including molecular breeding, transgenics, genomic-assisted breeding and the recently emerging genome editing for developing resistant varieties in pulse crops is imperative for addressing FPNEE (food, health, nutrition. energy and environment) security. Whole genome sequencing of these crops followed by genotyping-by-sequencing have facilitated precise information about the genes conferring resistance useful for gene discovery, allele mining and shuttle breeding which in turn opened up the scope for 'designing' crop genomes with resistance to biotic stresses. The nine chapters each dedicated to a pulse crop in this volume elucidate on different types of biotic stress agents and their effects on and interaction with the crop plants; enumerate on the available genetic diversity with regard to biotic stress resistance among available cultivars; illuminate on the potential gene pools for utilization in interspecific gene transfer; present brief on the classical genetics of stress resistance and traditional breeding for transferring them to their cultivated counterparts; depict the success stories of genetic engineering for developing biotic stress resistant varieties; discuss on molecular mapping of genes and QTLs underlying biotic stress resistance and their marker-assisted introgression into elite varieties; enunciate on different emerging genomics-aided techniques including genomic selection, allele mining, gene discovery and gene pyramiding for developing resistant crop varieties with higher quantity and quality of yields; and also elaborate some case studies on genome editing focusing on specific genes for generating disease and insect resistant crops.

Download or read book Seed borne plant virus diseases written by K. Subramanya Sastry and published by Springer Science & Business Media. This book was released on 2013-01-05 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seeds provide an efficient means in disseminating plant virus and viroid diseases. The success of modern agriculture depends on pathogen free seed with high yielding character and in turn disease management. There is a serious scientific concern about the transmission of plant viruses sexually through seed and asexually through plant propagules. The present book provides the latest information along with the total list of seed transmitted virus and viroid diseases at global level including, the yield losses, diagnostic techniques, mechanism of seed transmission, epidemiology and virus disease management aspects. Additional information is also provided on the transmission of plant virus and virus-like diseases through vegetative propagules. It is also well known that seed transmitted viruses are introduced into new countries and continents during large-scale traffic movements through infected germplasm and plant propogules. The latest diagnostic molecular techniques in different virus-host combinations along with disease management measures have been included. The book shall be a good reference source and also a text book to the research scientists, teachers, students of plant pathology, agriculture, horticulture, life sciences, green house managers, professional entrepreneurs, persons involved in quarantines and seed companies. This book has several important features of seed transmitted virus diseases and is a good informative source and thus deserves a place in almost all university libraries, seed companies and research organizations.

Download or read book Pathology and Molecular Comparison of a Range of Pea Seed borne Mosaic Virus Isolates written by Akhtar Ali and published by . This book was released on 1999 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the development of serological and nucleic acid based diagnostic methods for pea-seed borne mosaic virus (PSbMV), the isolation of specific effects on infected pea plants, the collection and biological comparison of new PSbMV isolates from Pakistan, the cloning and sequencing of specific parts of the genome of selected isolates, nucleotide and amino acid sequence comparisons between selected isolates, and the development of a ribonuclease protection assay (RPA) for identifying genomic differences among the PSbMV isolates. It is the first comparison of a range of geographically different isolates of PSbMV on the basis of both biological and molecular properties.