Asymmetric subgenome selection and cis-regulatory divergence during cotton domestication

Abstract

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Genomic divergence in cotton germplasm related to maturity and heterosis

“…Most prior genetic diversity studies have suggested that no obvious genetic structure exists in Chinese upland cotton populations (Fang et al ; Sun et al ; Wang et al ). In our study, we present strong evidence that CUCSG has highly divergent genomic signatures for the different lineages.…”

“…However, the number of markers and genome coverage was limited, leading to uncertainty about the population structure and, thus, hampering the identification of favorable alleles. Recent single‐nucleotide polymorphism (SNP)‐based studies were also unable to clearly illuminate the population structure of upland cotton (Fang et al ; Sun et al ; Wang et al ).…”

Epigenetic perspectives on the evolution and domestication of polyploid plant and crops

“…Domestication of cotton is predicted to take place approximately 5000 years ago [117]; two allotetraploid species, G. hirsutum L. and G. barbadense L. were independently domesticated into Upland or American and Pima or Egyptian cotton, respectively, for their higher fiber yield and wider geographical distribution [119]. The domestication characteristics were accompanied by many morphological changes including loss of photoperiod sensitivity, reduction in seed dormancy, and conversion from tree-like wild species to an annual crop [119,120•]. …”

Recent insights into cotton functional genomics: progress and future perspectives

“…In addition, re‐sequencing the genome for which there is a reference genome available permits exploration of the association between sequence variations. Recent comprehensive genome assessment by genome‐wide re‐sequencing of 34 (Page et al ., ), 318 (Fang et al ., ), 147 (Fang et al ., ) and 352 (Wang et al ., ) cotton accessions represented extensive collections in order to identify genome regions that are signature of selection. These studies provide new genomic resources that significantly advance molecular breeding in cotton.…”