Genome-wide analysis of the gene families of resistance gene analogues in cotton and their response to Verticillium wilt

• DOI: 10.1186/s12870-015-0508-3
• Publication Date: 2015-06-17T23:00:59Z
• Authors: Jie-Yin Chen; Jin-Qun Huang; Nan-Yang Li; Xue-Feng Ma; Jin-Long Wang; Chuan Liu; Yong-Feng Liu; Yong Liang; Yu-Ming Bao; Xiao-Feng Dai
• Keywords: Verticillium wilt; Verticillium dahliae; Verticillium; Gossypium; Homology

Gossypium raimondii is a Verticillium wilt-resistant cotton species whose genome encodes numerous disease resistance genes that play important roles in the defence against pathogens. However, characteristics of gene analogues (RGAs) and dahliae response loci (VdRLs) have not been investigated on global scale. In this study, RGA were systematically analysed using bioinformatics-driven methods. Moreover, potential VdRLs involved to wilt identified by RNA-seq correlations with known QTLs.The G. 1004 genes, most these cluster homology groups based high levels similarity. Interestingly, nearly half occurred 26 RGA-gene-rich clusters (Rgrcs). The analysis showed sequence exchanges tandem duplications frequently within Rgrcs, segmental took place among different Rgrcs. An responses, forming inside Rgrcs after being inoculated V. dahliae. A correlation found 12 adjacent QTLs, 5 rich NB-ARC domain-containing genes.The contains them are located clusters, which evolved exchanges, duplications. induced inoculation, vicinity QTLs.