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Advances in Statistical Methods for the Genetic Dissection of Complex Traits in Plants
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, ...
Insights in Computational Genomics: 2022
This Research Topic is part of the Insights in Frontiers in Genetics series. Other titles in the series are: Genetics, Insights in Evolutionary and Population Genetics: 2022 Genetics, Insights in Livestock Genomics: 2022 Genetics, Insights in Epigenomics and Epigenetics: 2022 Genetics, Insights in Behavioral and Psychiatric Genetics: 2022 Genetics, Insights in Neurogenomics: 2022 Genetics, Insights in Genomic Assay Technology: 2022 Genetics, Insights in Genetics of Common and Rare Diseases: 2022 We are now entering the third decade of the 21st Century, and, especially in the last years, the achievements made by scientists have been exceptional, leading to major advancements in the fast-growi...
Highly Contiguous Plant Genome Assembly and Transcriptional Regulation
Highly contiguous reference genome sequences are a prerequisite for genomics research and for the optimal utilization of plant species. However, whole-genome duplication events and subsequent chromosomal rearrangements and losses shape the complex features and extensive diversity of plant genomes, and hinder their highly contiguous assembly. With the advent of single-molecule, long-read sequencing technologies, such as PacBio High-Fidelity (HiFi) and Oxford Nanopore Technologies (ONT), as well as Bionano genomics and high-throughput chromatin conformation capture (Hi-C), many highly complex chromosome-level genomes have been revealed, even with phased haplotypes. These advanced sequencing te...
The Applications of New Multi-Locus GWAS Methodologies in the Genetic Dissection of Complex Traits
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 applicat...
