The Applications Of New Multi Locus Gwas Methodologies In The Genetic Dissection Of Complex Traits
DOWNLOAD
Download The Applications Of New Multi Locus Gwas Methodologies In The Genetic Dissection Of Complex Traits PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get The Applications Of New Multi Locus Gwas Methodologies In The Genetic Dissection Of Complex Traits book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
The Applications Of New Multi Locus Gwas Methodologies In The Genetic Dissection Of Complex Traits
DOWNLOAD
Author : Yuan-Ming Zhang
language : en
Publisher: Frontiers Media SA
Release Date : 2019-06-19
The Applications Of New Multi Locus Gwas Methodologies In The Genetic Dissection Of Complex Traits written by Yuan-Ming Zhang and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-19 with categories.
Genome-Wide Association Studies (GWAS) are widely used in the genetic dissection of complex traits. Most existing methods are based on single-marker association in genome-wide scans with population structure and polygenic background controls. To control the false positive rate, the Bonferroni correction for multiple tests is frequently adopted. This stringent correction results in the exclusion of important loci, especially for GWAS in crop genetics. To address this issue, multi-locus GWAS methodologies have been recommended, i.e., FASTmrEMMA, ISIS EM-BLASSO, mrMLM, FASTmrMLM, pLARmEB, pKWmEB and FarmCPU. In this Research Topic, our purpose is to clarify some important issues in the application of multi-locus GWAS methods. Here we discuss the following subjects: First, we discuss the advantages of new multi-locus GWAS methods over the widely-used single-locus GWAS methods in the genetic dissection of complex traits, metabolites and gene expression levels. Secondly, large experiment error in the field measurement of phenotypic values for complex traits in crop genetics results in relatively large P-values in GWAS, indicating the existence of small number of significantly associated SNPs. To solve this issue, a less stringent P-value critical value is often adopted, i.e., 0.001, 0.0001 and 1/m (m is the number of markers). Although lowering the stringency with which an association is made could identify more hits, confidence in these hits would significantly drop. In this Research Topic we propose a new threshold of significant QTN (LOD=3.0 or P-value=2.0e-4) in multi-locus GWAS to balance high power and low false positive rate. Thirdly, heritability missing in GWAS is a common phenomenon, and a series of scientists have explained the reasons why the heritability is missing. In this Research Topic, we also add one additional reason and propose the joint use of several GWAS methodologies to capture more QTNs. Thus, overall estimated heritability would be increased. Finally, we discuss how to select and use these multi-locus GWAS methods.
Advances In Statistical Methods For The Genetic Dissection Of Complex Traits In Plants
DOWNLOAD
Author : Yuan-Ming Zhang
language : en
Publisher: Frontiers Media SA
Release Date : 2024-01-26
Advances In Statistical Methods For The Genetic Dissection Of Complex Traits In Plants written by Yuan-Ming Zhang and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-26 with Science categories.
Genome-wide association studies (GWAS) have been widely used in the genetic dissection of complex traits. However, there are still limits in current GWAS statistics. For example, (1) almost all the existing methods do not estimate additive and dominance effects in quantitative trait nucleotide (QTN) detection; (2) the methods for detecting QTN-by-environment interaction (QEI) are not straightforward and do not estimate additive and dominance effects as well as additive-by-environment and dominance-by-environment interaction effects, leading to unreliable results; and (3) no or too simple polygenic background controls have been employed in QTN-by-QTN interaction (QQI) detection. As a result, few studies of QEI and QQI for complex traits have been reported based on multiple-environment experiments. Recently, new statistical tools, including 3VmrMLM, have been developed to address these needs in GWAS. In 3VmrMLM, all the trait-associated effects, including QTN, QEI and QQI related effects, are compressed into a single effect-related vector, while all the polygenic backgrounds are compressed into a single polygenic effect matrix. These compressed parameters can be accurately and efficiently estimated through a unified mixed model analysis. To further validate these new GWAS methods, particularly 3VmrMLM, they should be rigorously tested in real data of various plants and a wide range of other species.
Statistical Methods Computing And Resources For Genome Wide Association Studies
DOWNLOAD
Author : Riyan Cheng
language : en
Publisher: Frontiers Media SA
Release Date : 2021-08-24
Statistical Methods Computing And Resources For Genome Wide Association Studies written by Riyan Cheng and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-24 with Science categories.
Maize Genetic Resources
DOWNLOAD
Author : Mohamed A. El-Esawi
language : en
Publisher: BoD – Books on Demand
Release Date : 2022-04-20
Maize Genetic Resources written by Mohamed A. El-Esawi 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 2022-04-20 with Science categories.
Maize is one of the most economically important food crops worldwide. It is used for livestock feeds and human nutrition. Recent strategies have been adopted for improving maize crops. This book brings together recent advances, breeding strategies, and applications in the biological control, breeding, and genetic improvement of maize genetic resources. It also provides new insights and sheds light on new perspectives and future research work that have been carried out for further improvement of maize crops. This book is a useful resource for students, researchers, and scientists.
Genomic Designing For Biotic Stress Resistant Oilseed Crops
DOWNLOAD
Author : Chittaranjan Kole
language : en
Publisher: Springer Nature
Release Date : 2022-03-18
Genomic Designing For Biotic Stress Resistant Oilseed Crops written by Chittaranjan Kole and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-18 with Science categories.
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 oilseed 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 eight chapters each dedicated to an oilseed 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.
Genomics And Disease Resistance In Wheat And Maize
DOWNLOAD
Author : James A. Birchler
language : en
Publisher: Frontiers Media SA
Release Date : 2022-12-06
Genomics And Disease Resistance In Wheat And Maize written by James A. Birchler and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-06 with Science categories.
Wheat Disease Resistance Diagnosis Germplasm Mining And Molecular Breeding
DOWNLOAD
Author : Runsheng Ren
language : en
Publisher: Frontiers Media SA
Release Date : 2024-12-24
Wheat Disease Resistance Diagnosis Germplasm Mining And Molecular Breeding written by Runsheng Ren and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-12-24 with Science categories.
As one of the primary staple crops, wheat feeds around 35% of the world’s population, playing a crucial role in ensuring global food security. Wheat production faces numerous threats, among which pests and diseases cause an estimated 10%-16% loss of global wheat yield. Fortunately, some wheat and its related species carry genes that allow for resistance to one or more diseases during the growing period. How to identify, locate and clone these resistance genes is one of the important keys to rapid and effective wheat breeding for disease-resistant varieties. The utilization of excellent germplasm resources and the cultivation of new varieties cannot be separated from the development of key technologies. Recent innovations in genomic tools have made it possible to edit the susceptible genes in crops, opening up new opportunities in molecular breeding for disease-resistant varieties. Meanwhile, further development of crop variety identification and screening systems to achieve disease-resistant variety isolation and evaluation in a high-precision, high-sensitivity, and high-throughput manner can provide effective technical support for accelerating disease-resistant wheat breeding.
Concepts And Techniques In Omics And System Biology
DOWNLOAD
Author : Asmat Farooq
language : en
Publisher: Elsevier
Release Date : 2024-08-13
Concepts And Techniques In Omics And System Biology written by Asmat Farooq and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-13 with Science categories.
Concepts and Techniques in OMICS and Systems Biology provides a concise and lucid account on the technical aspects of omics, system biology and their application in fields of different life science.With a strong focus on the fundamental principles understanding of metabolomics, ionomics and system biology, the book also gives an updated account on technical aspects of omics and system biology. Since both omics and systems biology fields are fast advancing filed of biological sciences, its significance and applications need to be understood from the baseline.In 10 chapters Concepts and Techniques in OMICS and Systems Biology introduces the reader to both Proteomics, Metabolomics and Ionomics, and System Biology, the technical applications, describes both the software in for proteomics as metabolomic enumeration and preludes Omics technologies and their applications.The chapters are designed in a well-defined chronology such that readers will understand the concepts and techniques involved in omics and system biology. This compilation will be ideal reading material for students, researchers and people working in the industries related to biological sciences. - Provides an in-depth explanation of fundamental principles regarding the understanding of metabolomics, ionomics and system biology. - Gives updated account on technical aspects of omics and system biology. - Includes unique content in its theoretical background, technical approaches and advancements made in omics and systems biology
Smart Breeding
DOWNLOAD
Author : Kailash Chandra
language : en
Publisher: CRC Press
Release Date : 2024-02-13
Smart Breeding written by Kailash Chandra and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-13 with Science categories.
This new volume focuses on novel breeding and biotechnological approaches for crop improvement, covering recent advances in molecular breeding and plant breeding, such as pre-breeding, reverse breeding, allele mining, next-generation sequencing, etc. The authors consider the important necessity and development of climate-resilient crops that can withstand hostility or adversities of climate without substantially compromising yield and discuss ways to mitigate plant stress. The recent developments in breeding and biotechnological approaches concerning crop improvement that are discussed in the book include molecular markers, their genesis, and their significant applications for crop improvement; QTL mapping, a modern breeding approach for mapping quantitative traits; pulse molecular breeding and genomics; and approaches for precise gene alterations in the genome of organisms by using genome editing. Other techniques include reverse breeding, a technique that allows breeders to develop parental lines directly from the heterozygous plant within a shorter time frame; pre-breeding approaches for biotic and abiotic stress management in crop plants; allele mining as a way to find existing variations in an organism’s gene pool by scanning the entire gene; marker-assisted selection, where molecular markers have played a significant role in accelerating breeding programs; and next-generation sequencing (NGS) platforms in crop improvement, where the authors summarize the technical know-how of each sequencing platform and its merits and demerits. The book introduces the design and importance of Mutmap and its variant in modern breeding, a novel gene mapping approaches that allows rapid identification of causal nucleotide changes of mutants by whole-genome resequencing. Examples and case studies of the various approaches are included as well, with several examples of marker-assisted selection of rice and maize crop and other agriculturally important crops. This informative volume will enhance readers’ knowledge about the recent developments in breeding and biotechnological approaches concerning crop improvement.
The Flax Genome
DOWNLOAD
Author : Frank M. You
language : en
Publisher: Springer Nature
Release Date : 2023-03-01
The Flax Genome written by Frank M. You and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-01 with Science categories.
The Flax Genome is a comprehensive compilation of most recent studies focused on reference genome, genetic resources and molecular diversity, breeding, QTL mapping, gene editing tools, functional genomics and metabolomics, molecular breeding via genomic selection, and genomic resources. The flax genome reference sequences and the new genome assemblies are presented. A list of flax QTL and candidate genes associated with more than 35 traits, including yield and agronomic, seed quality and fatty acid composition, fibre quality and yield, abiotic stress, and disease resistance traits, are summarized. A QTL- based genomic selection strategy and genome–editing tools are systematically introduced. In addition, huge amounts of flax genomic resources generated in the last decade are summarized. The book contains 13 chapters with about 390 pages authored by globally reputed researchers in the relevant fields to this crop The book is intended to be useful to students, teachers, and researchers interested in traditional and molecular breeding, pathology, molecular genetics and breeding, bioinformatics and computational biology, and functional genomics