Genomic Insight into Differentiation and Selection Sweeps in the Improvement of Upland Cotton

文献类型： 外文期刊

第一作者： Nazir, Mian Faisal

作者： Nazir, Mian Faisal;Jia, Yinhua;Ahmed, Haris;He, Shoupu;Iqbal, Muhammad Shahid;Sarfraz, Zareen;Ali, Mushtaque;Raza, Irum;Sun, Gaofei;Pan, Zhaoe;Du, Xiongming;Feng, Chenfan

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关键词： upland cotton; phylogeny; domestication; selection sweeps

期刊名称：PLANTS-BASEL （ 影响因子：3.935； ）

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年卷期： 2020 年 9 卷 6 期

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收录情况： SCI

摘要： Upland cotton is the most economically important fibre crop. The human-mediated selection has resulted in modern upland cultivars with higher yield and better fibre quality. However, changes in genome structure resulted from human-mediated selection are poorly understood. Comparative population genomics offers us tools to dissect the genetic history of domestication and helps to understand the genome-wide effects of human-mediated selection. Hereby, we report a comprehensive assessment ofGossypium hirsutumlandraces, obsolete cultivars and modern cultivars based on high throughput genome-wide sequencing of the core set of genotypes. As a result of the genome-wide scan, we identified 93 differential regions and 311 selection sweeps associated with domestication and improvement. Furthermore, we performed genome-wide association studies to identify traits associated with the differential regions and selection sweeps. Our study provides a genetic basis to understand the domestication process in Chinese cotton cultivars. It also provides a comprehensive insight into changes in genome structure due to selection and improvement during the last century. We also identified multiple genome-wide associations (GWAS associations) for fibre yield, quality and other morphological characteristics.

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