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Author : Robert Saxon Brueggeman
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (367 download)
Download or read book Investigation of Puccinia Graminis Resistance Genes in Barley written by Robert Saxon Brueggeman and published by . This book was released on 2009 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Moureen Nansamba
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (938 download)
Download or read book Mapping of Resistance Genes in Barley (Hordeum Vulgare L.) to Oat Stem Rust Pathogen, Puccinia Graminis F. Sp. Avenae written by Moureen Nansamba and published by . This book was released on 2015 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuan Chai
Publisher :
ISBN 13 :
Total Pages : 93 pages
Book Rating : 4.:/5 (721 download)
Download or read book Investigations on Stem Rust Resistance Genes in Barley written by Yuan Chai and published by . This book was released on 2011 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arjun Upadhaya
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.3/5 (799 download)
Download or read book Genetic Characterization of Virulence in a Pacific Northwest Stem Rust Population and Mapping of New Sources of Resistance in Barley written by Arjun Upadhaya and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stem rust caused by the biotrophic fungal pathogen Puccinia graminis f. sp. tritici (Pgt) is an important disease of barley and wheat globally. In the last decade, the Pacific Northwest (PNW) region of the United States has experienced an increase in the incidence and severity of stem rust disease. This may be attributed to various factors, including increase in summer temperatures, lack of effective resistance, and early inoculum from sexual hosts. The PNW region's conducive environment and the presence of the sexual hosts, Mahonia and barberry, present an opportunity for the stem rust pathogen to complete its sexual cycle, leading to the emergence of genotypes with novel virulence gene combinations. A total of 100 Pgt isolates collected from barley in eastern Washington during the 2019 growing season were tested for virulence on the two major barley stem rust resistance genes/loci, Rpg1 and the rpg4/5-mediated resistance locus (RMRL) at the seedling stage. Of these isolates, 99% were virulent on cultivar Morex containing the Rpg1 gene, 62% were virulent on Golden Promise transgenic line (H228.2c) carrying a single copy of the Rpg1 gene from Morex, 16% were virulent on the near isogenic line, HQ-1 containing RMRL, and 10% were virulent on barley line Q21861 carrying both Rpg1 and RMRL. This was the first report of Pgt isolates containing virulence on both Rpg1 and RMRL when stacked together, representing the most virulent Pgt population reported on barley worldwide. To identify and map effective resistances against the local virulent isolates, a genome wide association study (GWAS) was conducted on 440 accessions from the World Barley Core Collection (WBCC), genotyped with the 9K Illumina barley iSelect chip and phenotyped with two PNW Pgt isolates at the seedling stage. A total of 10 resistance loci were identified including four novel loci on chromosomes 1H, 2H, 5H, and 6H. On the pathogen side, GWAS was performed using 113 diverse Pgt isolates, collected from the PNW and the Midwest region of the US, to identify virulence and avirulence loci corresponding to the barley stem rust resistance gene Rpg1 and the six wheat stem rust R-genes, Sr5, Sr21, Sr8a, Sr17, Sr9a, and Sr9d. The genotype data for 96 isolates were generated by whole genome shotgun sequencing and for 17 isolates by RNA sequencing. The phenotype data for the Pgt isolates were collected by seedling disease assays on two barley lines, H228.2c and Morex (Rpg1+) and the six wheat stem rust differential lines, Sr5, Sr21, Sr8a, Sr17, Sr9a, and Sr9d. A total of five effector gene candidates were identified at two loci corresponding to the Rpg1 gene. Similarly, 24 putative effector genes were identified at 15 loci corresponding to the six wheat R-genes. Further characterization of these genes will be done to enhance our understanding of host pathogen interactions in both the barley-Pgt and wheat-Pgt pathosystems.
Author : Upinder Singh Gill
Publisher :
ISBN 13 : 9781267476630
Total Pages : pages
Book Rating : 4.4/5 (766 download)
Download or read book Understanding and Characterizing the Genes Associated with RPG1-mediated Resistance Pathway Against Stem Rust written by Upinder Singh Gill and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Barley stem rust resistance gene, Rpg1 (Reaction to Puccinia graminis 1), confers durable resistance to barley cultivars against stem rust caused by many races of Puccinia graminis f. sp. tritici. The current study was focused on understanding and characterizing the genes associated with Rpg1 in barley. HvRIN4 (a barley homolog of RPM1 interacting protein in Arabidopsis), which interacts with RPG1 in an yeast two-hybrid system, was isolated, characterized and studied for its role in barley. Using gamma-ray mutagenesis, six mutants affecting the Rpg1-mediated resistance against stem rust were identified. All mutants retained a functional Rpg1 gene and were non-allelic, suggesting that the mutated genes were required for downstream or upstream signaling. Low and high-resolution genetic mapping of the mutant gamma 08--118 gene identified a 0.6 cM region of chromosome 6H of barley for its location. In another study the applicability of wheat Conserved Orthologous Set (COS) markers on diverse cereal germplasm and their efficacy was investigated. Overall, this research will help in understanding the mechanism of Rpg1-mediated durable resistance against stem rust in barley.
Author : David B. Collinge
Publisher : John Wiley & Sons
ISBN 13 : 1118867769
Total Pages : 453 pages
Book Rating : 4.1/5 (188 download)
Download or read book Plant Pathogen Resistance Biotechnology written by David B. Collinge and published by John Wiley & Sons. This book was released on 2016-06-13 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant pathogens and diseases are among the most significant challenges to survival that plants face. Disease outbreaks caused by microbial or viral pathogens can decimate crop yields and have severe effects on global food supply. Understanding the molecular mechanisms underlying plant immune response and applying this understanding to develop biotechnological tools to enhance plant defense against pathogens has great potential for moderating the impact of plant disease outbreaks. Plant Pathogen Resistance Biotechnology’s main focus is an in depth survey of the biological strategies being used to create transgenic disease resistant plants for sustainable plant resistance Plant Pathogen Resistance Biotechnology is divided into four sections. The first section covers biological mechanisms underpinning disease resistance in plants, while the second highlights case studies of important pathogen-crop groups and then considers why the application of important pathogen-crop groups, transgenic-based strategies designed to selectively target pathogens could benefit crop production. The third section provides information on the status of transgenic crops around the world, and finally the last part explores high-tech alternatives to genetic engineering for developing disease resistant traits in plants. Edited and authored by leaders in the field, Plant Pathogen Resistance Biotechnology will be an invaluable resource to those studying or researching plant biotechnology, plant pathology, plant biology, plant and crop genetics, in addition to crop science.
Author : Xianming Chen
Publisher : Springer
ISBN 13 : 9402411119
Total Pages : 723 pages
Book Rating : 4.4/5 (24 download)
Download or read book Stripe Rust written by Xianming Chen and published by Springer. This book was released on 2017-07-11 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively introduces stripe rust disease, its development and its integral control. Covering the biology, genetics, genome, and functional genomics of the pathogen, it also discusses host and non-host resistance, their interactions and the epidemiology of the disease. It is intended for scientists, postgraduates and undergraduate studying stripe rust, plant pathology, crop breeding, crop protection and agricultural science, but is also a valuable reference book for consultants and administrators in agricultural businesses and education.
Author : S. van Heyzen
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (11 download)
Download or read book Host Status and Genetic Analysis of Quantitative Resistance of Barley to Yellow Stripe Rust Caused by Puccinia Striiformis F.sp. Bromi, P. Striiformis F.sp. Tritici and P. Striiformis F.sp. Hordei written by S. van Heyzen and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Puccinia striiformis, the causal fungus of yellow stripe rust, is an economically important pathogen. Recently an isolate of stripe rust was collected from Bromus carinatus in Wageningen, The Netherlands. This has been temporarily classified as P. striiformis f.sp. bromi (Psb) and in preliminary studies showed a propensity to infect barley. Therefore it is of interest to test and compare this isolate with other stripe rust isolates that have been shown to infect barley; namely P. striiformis f.sp. tritici (Pst) and P. striiformis f.sp. hordei (Psh). The objectives of this study were four fold: Firstly to establish a preliminary host range of Psb, Pst and Psh; second to quantify the host status of barley to these three yellow stripe rust isolates; third to map those QTL’s that are effective against Psb, Pst and Psh in barley mapping populations; and lastly to compare these QTL’s in all three rust isolates to those QTL’s that have been previously mapped to other heterologous rusts. An indicative host range study on 46 grass and cereal species, consisting of a total of 162 accessions, showed Psb to be more versatile than Pst or Psh, in the sense that Psb was more successful on wild and cultivated accessions where both Pst and Psh were less successful. On a genus level, Lolium and Secale were resistant, Avena susceptible to only Psb and Agropyron, Aegilops, Triticum, Hordeum and Bromus were all susceptible to the three ff.spp.. A barley host-status seedling test was performed on 118 accessions, resulting in barley being classified a host for Psh, with 90% of the accessions showing a host-type response, and as a marginal host for Psb and Pst, with host-type responses in 47% and 11% of the accessions tested, respectively. At an adult plant stage, most accessions were resistant, except for those tested with Psh. QTL mapping experiments revealed two QTLs conferring resistance against Psb and Pst and a third for resistance against Psb in the Vada × SusPtrit RIL population, using quantitative data from number of pustule and composite lesion length with Vada being the resistant parent and SusPtrit the susceptible parent. Mapping experiments in the L94 × Vada RIL population, also using quantitative data from number of pustule and composite lesion length but with L94 being the resistant parent and Vada the susceptible parent, mapped a major gene which has been attributed to be possibly rpsGZ.
Author : Alan P. Roelfs
Publisher : CIMMYT
ISBN 13 : 9789686127478
Total Pages : 92 pages
Book Rating : 4.1/5 (274 download)
Download or read book Rust Diseases of Wheat written by Alan P. Roelfs and published by CIMMYT. This book was released on 1992 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. von Bothmer
Publisher : Elsevier
ISBN 13 : 0080530478
Total Pages : 307 pages
Book Rating : 4.0/5 (85 download)
Download or read book Diversity in Barley (Hordeum vulgare) written by R. von Bothmer and published by Elsevier. This book was released on 2003-07-03 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic diversity is one of the main resources sustaining human life. Food security largely depends on the availability and utilization of this diversity, which is of strategic importance for countries and companies. Conservation and utilization of biodiversity is thus currently an urgent area of global debate and concern. Barley is a major crop in the world used for food, feed and malt, and with a wide religious and ethnic importance. The crop was domesticated in Neolithic time in SW Asia and spread rapidly under cultivation to new areas. Nowadays it is one of the most widespread and widely adapted crops grown under contrasting edaphic conditions. Adaptations to new environments, different agricultural practices and selection for different uses have further added to the complex diversity pattern. Is it at all possible to give a complete picture of the diversity in a crop or wild species? Are we, by adding new technologies, only revealing parts of the diversity? Do different sets of data show similar or conflicting pictures of genetic diversity? Will the large genome size reduce the role of barley as a model organism in these current sequencing days? Or, are there still major reasons to continue to work with this beautiful crop? The aim of this book is to cover the complex issue of diversification in time and space in a single crop: barley. Leading scientists from various fields describe the entire variation pattern in different sets of characters and an attempt is made for a synthesis to a holistic picture. The book proposes ways to use the achievements of diversity studies in future research and breeding programmes.
Author : Yongliang Sun
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (352 download)
Download or read book Resistance of Barley to Puccinia Graminis F. Sp. Tritici and P.g. F. Sp. Secalis and the Effect of Incubation Time and Temperature on the Expression of Resistance Conferred by the Gene Rpg4 written by Yongliang Sun and published by . This book was released on 1995 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nils Stein
Publisher : Springer
ISBN 13 : 3319925288
Total Pages : 400 pages
Book Rating : 4.3/5 (199 download)
Download or read book The Barley Genome written by Nils Stein and published by Springer. This book was released on 2018-08-18 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of the state-of-the-art in barley genome analysis, covering all aspects of sequencing the genome and translating this important information into new knowledge in basic and applied crop plant biology and new tools for research and crop improvement. Unlimited access to a high-quality reference sequence is removing one of the major constraints in basic and applied research. This book summarizes the advanced knowledge of the composition of the barley genome, its genes and the much larger non-coding part of the genome, and how this information facilitates studying the specific characteristics of barley. One of the oldest domesticated crops, barley is the small grain cereal species that is best adapted to the highest altitudes and latitudes, and it exhibits the greatest tolerance to most abiotic stresses. With comprehensive access to the genome sequence, barley’s importance as a genetic model in comparative studies on crop species like wheat, rye, oats and even rice is likely to increase.
Author : Eckhard Limpert
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.E/5 ( download)
Download or read book COST 817 written by Eckhard Limpert and published by . This book was released on 1996 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : RA McIntosh
Publisher : CSIRO PUBLISHING
ISBN 13 : 0643103023
Total Pages : 308 pages
Book Rating : 4.6/5 (431 download)
Download or read book Wheat Rusts written by RA McIntosh and published by CSIRO PUBLISHING. This book was released on 1995-01-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although stem rust has been controlled by means of resistant cultivars, leaf and stripe rust continue as problems for many growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes has been prepared by specialists from one of the leading international laboratories, and illustrates with colour photographs typical resistance phenotypes associated with most known genes for resistance to the three rust diseases of wheat. Relevant details for each gene include chromosome location, aspects of genetics and pathogen variation, the effects of environment on expression, origin, availability in genetic and breeding stocks, and use in agriculture. This atlas includes an introduction to host:pathogen genetics, methodologies for wheat rust research and breeding for resistance.
Author : Yuri Dyakov
Publisher : Elsevier
ISBN 13 : 0080469337
Total Pages : 497 pages
Book Rating : 4.0/5 (84 download)
Download or read book Comprehensive and Molecular Phytopathology written by Yuri Dyakov and published by Elsevier. This book was released on 2007-01-09 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of information on successive steps of molecular ‘dialogue’ between plants and pathogens. It additionally presents data that reflects intrinsic logic of plant-parasite interactions. New findings discussed include: host and non-host resistance, specific and nonspecific elicitors, elicitors and suppressors, and plant and animal immunity. This book enables the reader to understand how to promote or prevent disease development, and allows them to systematize their own ideas of plant-pathogen interactions. * Offers a more extensive scope of the problem as compared to other books in the market* Presents data to allow consideration of host-parasite relationships in dynamics and reveals interrelations between pathogenicity and resistance factors* Discusses beneficial plant-microbe interactions and practical aspects of molecular investigations of plant-parasite relationships* Compares historical study of common and specific features of plant immunity with animal immunity
Author : Jeffrey Bennetzen
Publisher : Springer
ISBN 13 : 3319974270
Total Pages : 390 pages
Book Rating : 4.3/5 (199 download)
Download or read book The Maize Genome written by Jeffrey Bennetzen and published by Springer. This book was released on 2018-11-24 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses advances in our understanding of the structure and function of the maize genome since publication of the original B73 reference genome in 2009, and the progress in translating this knowledge into basic biology and trait improvement. Maize is an extremely important crop, providing a large proportion of the world’s human caloric intake and animal feed, and serving as a model species for basic and applied research. The exceptionally high level of genetic diversity within maize presents opportunities and challenges in all aspects of maize genetics, from sequencing and genotyping to linking genotypes to phenotypes. Topics covered in this timely book range from (i) genome sequencing and genotyping techniques, (ii) genome features such as centromeres and epigenetic regulation, (iii) tools and resources available for trait genomics, to (iv) applications of allele mining and genomics-assisted breeding. This book is a valuable resource for researchers and students interested in maize genetics and genomics.
Author : William Rodgers Bushnell
Publisher :
ISBN 13 :
Total Pages : 576 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Cereal Rusts: Origins, specificity, structure, and physiology written by William Rodgers Bushnell and published by . This book was released on 1984 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Origins, specificity, structure, and physiology; Evolution at the center of origin; Taxonomy of the cereal rust fungi; Specificity; The formae speciales; Race specificity and methods of study; Genetics of the pathogen: host association; Histology and molecular biology of host: parasite; Virulence frequency dynamics of cereal rust fungi; The rust fungus; Controlled infection by Puccinia graminis f.sp. tritici under artificial conditions; Developmental ultrastructure of hyphae and spores; Development and physical of teliospores; Obligate parasitism and axenic culture; The host parsite interface; The rusted host; Effects of rust on plant development in relation to the translocation of inorganic and organic solutes.
