Genome-Wide Identification and Characterization of Pectin Methylesterase Inhibitor Genes in Brassica oleracea.

ABSTRACT: The activities of pectin methylesterases (PMEs) are regulated by pectin methylesterase inhibitors (PMEIs), which consequently control the pectin methylesterification status. However, the role of PMEI genes in Brassica oleracea, an economically important vegetable crop, is poorly understood. In this study, 95 B. oleracea PMEI (BoPMEI) genes were identified. A total of 77 syntenic ortholog pairs and 10 tandemly duplicated clusters were detected, suggesting that the expansion of BoPMEI genes was mainly attributed to whole-genome triplication (WGT) and tandem duplication (TD). During diploidization after WGT, BoPMEI genes were preferentially retained in accordance with the gene balance hypothesis. Most homologous gene pairs experienced purifying selection with ω (Ka/Ks<

SUBMITTER: Liu T 

PROVIDER: S-EPMC6274938 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature