Genome resources for three modern cotton lines guide future breeding efforts

• 全文链接

三个现代棉花品系的基因组资源指导今后的育种工作

关键词：

来源：

NATURE PLANTS

全文链接：

//agri.nais.net.cn/topic/downloadFile/b3a76fe1-5eaa-4e0f-9b9d-5ff639ca8936

来源地址：

https://www.nature.com/articles/s41477-024-01713-z

资源所属：

棉花遗传育种

类型：

学术文献

语种：

英语

原文发布日期：

2024-05-30

摘要：

Cotton (Gossypium hirsutum L.) is the key renewable fibre crop worldwide, yet its yield and fibre quality show high variability due to genotype-specific traits and complex interactions among cultivars, management practices and environmental factors. Modern breeding practices may limit future yield gains due to a narrow founding gene pool. Precision breeding and biotechnological approaches offer potential solutions, contingent on accurate cultivar-specific data. Here we address this need by generating high-quality reference genomes for three modern cotton cultivars (‘UGA230’, ‘UA48’ and ‘CSX8308’) and updating the ‘TM-1’ cotton genetic standard reference. Despite hypothesized genetic uniformity, considerable sequence and structural variation was observed among the four genomes, which overlap with ancient and ongoing genomic introgressions from ‘Pima’ cotton, gene regulatory mechanisms and phenotypic trait divergence. Differentially expressed genes across fibre development correlate with fibre production, potentially contributing to the distinctive fibre quality traits observed in modern cotton cultivars. These genomes and comparative analyses provide a valuable foundation for future genetic endeavours to enhance global cotton yield and sustainability.