Disease Resistance And Susceptibility Genes To Bacterial Blight Of Rice
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Disease Resistance And Susceptibility Genes To Bacterial Blight Of Rice
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Author : Frank White
language : en
Publisher:
Release Date : 2022
Disease Resistance And Susceptibility Genes To Bacterial Blight Of Rice written by Frank White and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Electronic books categories.
Rice (Oryza sativa L.) is a valuable resource for understanding the complex processes controlling yield and value-added traits. Bacterial blight (BB) is a vascular disease of rice, caused by strains of Xanthomonas oryzae pv. oryzae (Xoo) and provides insight, both practical and basic, into the concepts of susceptibility and resistance. Basic knowledge has been empirically and, more recently, intentionally exploited for broad and durable resistance to the disease. Bacterial blight involves representatives of most classes of resistance genes (R genes) and pathways for basal plant immunity. The study of BB also revealed novelties not observed in other models, possibly due to the long history of rice cultivation and the constant disease pressure. Conspicuous are the recessive R genes that target the notorious type III Transcription Activator-like effectors (TALes) of Xoo. Results indicate that pathogen and host are currently in a battle over a small patch of ground involving TALes function. At the same time, analyses of rice disease physiology are adding to a growing body of knowledge for plant disease processes and to how these processes are intertwined with disease susceptibility. The basic processes of BB present rich targets for the rapid advances in genome editing.
Cloning And Characterization Of The Rice Bacterial Blight Disease Resistance Gene Xa5
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Author : Anjali Susan Iyer-Pascuzzi
language : en
Publisher:
Release Date : 2006
Cloning And Characterization Of The Rice Bacterial Blight Disease Resistance Gene Xa5 written by Anjali Susan Iyer-Pascuzzi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Protecting Rice Grains In The Post Genomic Era
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Author : Yulin Jia
language : en
Publisher: BoD – Books on Demand
Release Date : 2019-10-02
Protecting Rice Grains In The Post Genomic Era written by Yulin Jia and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-02 with Technology & Engineering categories.
This book focuses on recent advances in genetic resources, host - pathogen interactions, assay methods, mechanisms of pathogenesis, and disease resistance. Environmentally benign crop protection methods for major rice diseases such as rice blast, sheath blight, bacterial blight, and newly emerged rice diseases such as false smut and bacterial panicle blight disease are included. The content also contains recent rice breeding methods for higher yield and improved disease resistance, rice processing, delicious rice recipes, and food safety. The book includes a comprehensive understanding of Bacillus thuringiensis toxin and its application for crop protection. Holistically, the book demonstrates successful applications of genomics, physiology, chemistry, genetics, pathology, soil science, and food technology to sustainably protect rice crops for global food safety.
Understanding Durable Disease Resistance In Rice
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Author : Seweon Lee
language : en
Publisher:
Release Date : 2010
Understanding Durable Disease Resistance In Rice written by Seweon Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Both qualitative and quantitative resistance mechanisms are important contributors to disease resistance in rice. To identify useful sources of durable resistance for Korean breeding programs, the distribution of rice blast isolates compatible to widely used resistance (R) genes was analyzed. Interactions of 3,747 Korean rice Magnaporthe oryzae isolates with eight monogenic lines, each harboring a major blast R gene, were tested. Lines with R gene Pi-9 and Pi-5 were susceptible to the fewest M. oryzae isolates, and therefore, this gene might be applied for blast resistance in breeding programs in Korea. Six major blast resistance genes were susceptible to more than 60 % of the population, suggesting limited utility of these genes in breeding programs. Quantitative trait loci (QTL)-based resistance is predicted to provide durable and broad spectrum resistance to rice diseases. A candidate gene approach was applied to a population of 164 recombinant inbred lines to identify sources of quantitative resistance. Resistance gene analogs and defense response genes were mapped on the rice chromosomes, and analyzed for their association with blast and bacterial blight resistance QTL. A total of 21 putative QTL for blast resistance were identified on chromosomes 1, 4, 5, 6, 8, 9 and 12. Four putative QTL for bacterial blight resistance were identified on chromosome 3, 5 and 10. Thirteen RGA markers were associated with 11 different QTL on chromosome 1, 5, 8, and 9. The role of one disease resistance QTL associated gene, Os02g39330, encoding a chitinase was investigated for contributing to basal defense responses. RNAi silencing was used to evaluate contributions of the gene for the resistance to Rhizoctonia solani and M. oryzae. Five transgenic lines harboring the silencing construct and which differed in the level of expression of Os02g39330 were screened for responses to R. solani and M. oryzae. The chitinase gene expression levels were inversely correlated with sheath blight disease severity, suggesting a role for this defense gene in resistance to R. solani. Rice blast disease was not affected by silencing Os02g39330. Both qualitative and QTL-based resistances provide valuable sources of disease resistance, and a combination of R gene Pi-9 and QTL harboring the Os02g39330 chitinase may help to stabilize resistance.
Advances In International Rice Research
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Author : Jin Quan Li
language : en
Publisher: BoD – Books on Demand
Release Date : 2017-03-15
Advances In International Rice Research written by Jin Quan Li and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-15 with Technology & Engineering categories.
Rice provides staple food for more than 50% of the world's population and is an important crop in the world. With the new technologies such as high-throughput genome sequencing and integrated "-omis" methods applied in rice researches, great advancements have been made. This book was aimed to show a glance of new advancements in the international rice researches. The first section of the book introduced rice cultivation and production. As core sections of the book, the second and third sections introduced physiological and genetic mechanisms on grain quality and biotic and abiotic stress resistance as well as breeding. In the last section, we introduced new technologies such as chromatin immunoprecipitation, integrated "-omis" methods, and bistatic interferometry technology in rice research.
Bacterial Blight Of Rice
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Author :
language : en
Publisher: Int. Rice Res. Inst.
Release Date : 1989
Bacterial Blight Of Rice written by and has been published by Int. Rice Res. Inst. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Bacterial diseases of plants categories.
Pathogenesis; Epidemiology and ecology; Host resistance and pathogen variation; Genetics and plant breeding; Abstracts.
Molecular Basis Of Avrxa7 Mediated Virulence In Bacterial Blight Of Rice
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Author : Ginny Antony
language : en
Publisher:
Release Date : 2010
Molecular Basis Of Avrxa7 Mediated Virulence In Bacterial Blight Of Rice written by Ginny Antony and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Plants have evolved sophisticated mechanisms to protect against microbial invaders of which resistance (R) genes are an important component. R genes mediate specific recognition of pathogens possessing cognate avirulence (avr) gene products, which leads to the induction of plant defense responses and the arrest of pathogen ingress. In contrast to numerous examples of R gene-avr interactions, the susceptible interaction is less well examined. Recent studies on rice and wheat indicate that host resistance to pathogens also involves genetic variability in dominant traits for susceptibility. Xanthomonas oryzae pv.oryzae (Xoo) causes bacterial blight disease in rice, a serious threat in the major rice growing regions of Asia. The pathogenicity of Xoo depends on the translocation of a cocktail of effector proteins into rice cells by a type III secretion system. The family of transcription activator like (TAL) effectors is the one of the most intriguing due to their eukaryotic features and function as major virulence determinants. The specificity of TAL effectors is determined by the nearly identical repeat units at the center of each protein. The major virulence determinant of the strain PXO99A is PthXo1, which hijacks the transcription of the host susceptibility (S) gene Os8N3, an allele of recessive resistance gene xa13. The strains that overcome xa13-mediated resistance harbor alternate major TAL effectors including PthXo2, PthXo3 and AvrXa7. Alternate effectors do not induce Os8N3. This study identified the alternate S gene Os11N3, which is dependent on the effectors AvrXa7 and PthXo3. The effectors bind to specific elements in the proximal promoter regions of the respective S genes and act as transcriptional activators. Our results indicate that rice-Xoo interactions involve gene-for-gene susceptibility to bacterial blight in addition to gene-for-gene resistance.
Bacterial Diseases Of Rice And Their Management
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Author : Deepti Srivastava
language : en
Publisher: CRC Press
Release Date : 2023-05-05
Bacterial Diseases Of Rice And Their Management written by Deepti Srivastava and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-05-05 with Technology & Engineering categories.
Rice is a major staple food and a source of nutrition for over 3.5 billion people worldwide. It is, however, susceptible to a number of bacterial diseases that decrease its yield and quality. This book covers the bacterial diseases of rice and their management, focusing on sustainable management methods that involve biological control, conventional breeding, and molecular methods. It covers the biology of rice bacterial blight pathogens, virulence determinants, and host defense factors of bacterial blight pathogen-rice interactions. Different resistance rice cultivars, their resistance loci, and quantitative trait loci mapping in the important rice cultivars are also discussed. The book presents biological studies of the major rice bacterial diseases (rice bacterial brown stripe disease, bacterial leaf streak disease, rice bacterial panicle blight disease, rice bacterial foot rot, sheath brown rot disease) and presents comparative analyses of conventional breeding, and molecular management approaches, along with examples.
Breeding For Disease Resistance In Rice
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Author : S. Gangopadhyay
language : en
Publisher:
Release Date : 1987
Breeding For Disease Resistance In Rice written by S. Gangopadhyay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Technology & Engineering categories.
Rice Diseases
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Author : Shu Huang Ou
language : en
Publisher: IRRI
Release Date : 1985
Rice Diseases written by Shu Huang Ou and has been published by IRRI this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Law categories.
Virus and MLO diseases; Bacterial diseases; Fungus diseases - foliage diseases; Fungus diseases - diseases of stem, leaf sheath and root; Fungus diseases - seedling diseases; Fungus diseases - diseases of grain and inflorescence; Diseases caused by nematodes; Physiological diseases.