scholarly journals Population structure and genetic basis of the agronomic traits of upland cotton in China revealed by a genome-wide association study using high-density SNPs

2017 ◽  
Vol 15 (11) ◽  
pp. 1374-1386 ◽  
Author(s):  
Cong Huang ◽  
Xinhui Nie ◽  
Chao Shen ◽  
Chunyuan You ◽  
Wu Li ◽  
...  
Keyword(s):  
Population Structure ◽  
Association Study ◽  
Upland Cotton ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Agronomic Traits ◽  
High Density ◽  
Genome Wide Association ◽  
Genome Wide ◽  
A Genome

scholarly journals A Genome-Wide Association Study Revealed Key SNPs/Genes Associated With Salinity Stress Tolerance In Upland Cotton

Genes ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 829 ◽  
Author(s):  
Muhammad Yasir ◽  
Shoupu He ◽  
Gaofei Sun ◽  
Xiaoli Geng ◽  
Zhaoe Pan ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Association Study ◽  
Stress Tolerance ◽  
Salinity Stress ◽  
Upland Cotton ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Genome Wide ◽  
A Genome ◽  
Salinity Stress Tolerance

Millions of hectares of land are too saline to produce economically valuable crop yields. Salt tolerance in cotton is an imperative approach for improvement in response to ever-increasing soil salinization. Little is known about the genetic basis of salt tolerance in cotton at the seedling stage. To address this issue, a genome-wide association study (GWAS) was conducted on a core collection of a genetically diverse population of upland cotton (Gossypium hirsutum L.) comprising of 419 accessions, representing various geographic origins, including China, USA, Pakistan, the former Soviet Union, Chad, Australia, Brazil, Mexico, Sudan, and Uganda. Phenotypic evaluation of 7 traits under control (0 mM) and treatment (150 mM) NaCl conditions depicted the presence of broad natural variation in the studied population. The association study was carried out with the efficient mixed-model association eXpedited software package. A total of 17,264 single-nucleotide polymorphisms (SNPs) associated with different salinity stress tolerance related traits were found. Twenty-three candidate SNPs related to salinity stress-related traits were selected. Final key SNPs were selected based on the r2 value with nearby SNPs in a linkage disequilibrium (LD) block. Twenty putative candidate genes surrounding SNPs, A10_95330133 and D10_61258588, associated with leaf relative water content, RWC_150, and leaf fresh weight, FW_150, were identified, respectively. We further validated the expression patterns of twelve candidate genes with qRT-PCR, which revealed different expression levels in salt-tolerant and salt-sensitive genotypes. The results of our GWAS provide useful knowledge about the genetic control of salt tolerance at the seedling stage, which could assist in elucidating the genetic and molecular mechanisms of salinity stress tolerance in cotton plants.

scholarly journals Genome-Wide Association Study Reveals the Genetic Basis of Chilling Tolerance in Rice at the Reproductive Stage

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1722
Author(s):  
Byeong Yong Jeong ◽  
Yoonjung Lee ◽  
Yebin Kwon ◽  
Jee Hye Kim ◽  
Tae-Ho Ham ◽  
...  
Keyword(s):  
Association Study ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Linkage Disequilibrium Block ◽  
Chilling Tolerance ◽  
Reproductive Stage ◽  
Genome Wide Association ◽  
Matrix Analysis ◽  
Genome Wide ◽  
A Genome

A genome-wide association study (GWAS) was used to investigate the genetic basis of chilling tolerance in a collection of 117 rice accessions, including 26 Korean landraces and 29 weedy rices, at the reproductive stage. To assess chilling tolerance at the early young microspore stage, plants were treated at 12 °C for 5 days, and tolerance was evaluated using seed set fertility. GWAS, together with principal component analysis and kinship matrix analysis, revealed five quantitative trait loci (QTLs) associated with chilling tolerance on chromosomes 3, 6, and 7. The percentage of phenotypic variation explained by the QTLs was 11–19%. The genomic region underlying the QTL on chromosome 3 overlapped with a previously reported QTL associated with spikelet fertility. Subsequent bioinformatic and haplotype analyses suggested three candidate chilling-tolerance genes within the QTL linkage disequilibrium block: Os03g0305700, encoding a protein similar to peptide chain release factor 2; Os06g0495700, encoding a beta tubulin, autoregulation binding-site-domain-containing protein; and Os07g0137800, encoding a protein kinase, core-domain-containing protein. Further analysis of the detected QTLs and the candidate chilling-tolerance genes will facilitate strategies for developing chilling-tolerant rice cultivars in breeding programs.

scholarly journals Genome-Wide Association Study of H/L Traits in Chicken

Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 260 ◽  
Author(s):  
Bo Zhu ◽  
Qinghe Li ◽  
Ranran Liu ◽  
Maiqing Zheng ◽  
Jie Wen ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Association Study ◽  
Genetic Basis ◽  
Molecular Mechanisms ◽  
Genome Wide Association Study ◽  
Gene Annotation ◽  
Immune Defense ◽  
Genome Wide Association ◽  
Genome Wide ◽  
A Genome

Presently, the heterophil-to-lymphocyte (H/L) ratio is being studied extensively as a disease resistance trait. Through intricate mechanisms to identify and destroy pathogenic microorganisms, heterophils play a pivotal role in the immune defense systems of avian species. To reveal the genetic basis and molecular mechanisms affecting the H/L ratio, phenotypic and H/L data from 1650 white feather chicken broilers were used in performing a genome-wide association study. A self-developed, chicken-specific 55K chip was used for heterophils, lymphocytes, and H/L classification, according to individual genomic DNA profiles. We identified five significant single nucleotide polymorphisms (SNPs) when the genome-wide significance threshold was set to 5% (p < 2.42 × 10−6). A total of 15 SNPs obtained seemingly significant levels (p < 4.84 × 10−5). Gene annotation indicated that CARD11 (Caspase recruitment domain family member 11), BRIX1 (Biogenesis of ribosomes BRX1), and BANP (BTG3 associated nuclear protein) play a role in H/L-associated cell regulation and potentially constitute candidate gene regions for cellular functions dependent on H/L ratios. These results lay the foundation for revealing the genetic basis of disease resistance and future marker-assisted selection for disease resistance.

scholarly journals Heritability and molecular genetic basis of antisaccade eye tracking error rate: A genome-wide association study

2014 ◽  
Vol 51 (12) ◽  
pp. 1272-1284 ◽  
Author(s):  
Uma Vaidyanathan ◽  
Stephen M. Malone ◽  
Jennifer M. Donnelly ◽  
Micah A. Hammer ◽  
Michael B. Miller ◽  
...  
Keyword(s):  
Association Study ◽  
Error Rate ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Molecular Genetic ◽  
Tracking Error ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Molecular Genetic Basis ◽  
A Genome

scholarly journals Exploring the genetic basis of chronic periodontitis: a genome-wide association study

2013 ◽  
Vol 22 (11) ◽  
pp. 2312-2324 ◽  
Author(s):  
K. Divaris ◽  
K. L. Monda ◽  
K. E. North ◽  
A. F. Olshan ◽  
L. M. Reynolds ◽  
...  
Keyword(s):  
Association Study ◽  
Chronic Periodontitis ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Genome Wide ◽  
A Genome

scholarly journals Genetics of fasting and postprandial metabolite levels are overlapping

2018 ◽  
Vol 50 (4) ◽  
pp. 235-236
Author(s):  
Ruifang Li-Gao ◽  
Renée de Mutsert ◽  
Frits R. Rosendaal ◽  
Ko Willems van Dijk ◽  
Dennis O. Mook-Kanamori
Keyword(s):  
Association Study ◽  
Human Body ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Genetic Associations ◽  
Mixed Meal ◽  
Genome Wide ◽  
A Genome ◽  
Metabolite Concentrations

In 2015, a genome-wide association study described 59 independent signals that showed strong associations with 85 fasting metabolite concentrations as measured by the Biocrates AbsoluteIDQ p150 kit. However, the human body resides in a nonfasting state for the greater part of the day, and the genetic basis of postprandial metabolite concentrations remains largely unknown. We systematically examined these previously identified genetic associations in postprandial metabolite concentrations after a mixed meal. Of these 85 metabolites, 23 were identified with significant changes after the meal, for which 38 gene-metabolite associations were analyzed. Of these 38 associations, 31 gene-metabolite associations were replicated with postprandial metabolite concentrations. These data indicate that the genetics of fasting and postprandial metabolite levels are significantly overlapping.

scholarly journals Heritability and molecular-genetic basis of resting EEG activity: A genome-wide association study

2014 ◽  
Vol 51 (12) ◽  
pp. 1225-1245 ◽  
Author(s):  
Stephen M. Malone ◽  
Scott J. Burwell ◽  
Uma Vaidyanathan ◽  
Michael B. Miller ◽  
Matt MCGUE ◽  
...  
Keyword(s):  
Association Study ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Molecular Genetic ◽  
Genome Wide Association ◽  
Eeg Activity ◽  
Genome Wide ◽  
Molecular Genetic Basis ◽  
A Genome
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