Genome-wide Identification and Phylogenetic Analysis of SWEET Gene Family in Gossypium raimondii

doi:10.11924/j.issn.1000-6850.casb17040083

Abstract

Abstract: To study the distribution and function of SWEET gene family in cotton, based on the genome data of the diploid cottonGossypium raimondii (DD), the bioinformatics method was used to identify the whole genome level of SWEET gene family, and the phylogenetic, genetic structure, chromosome localization and transmembrane domain analysis were performed. A total of 31 Gossypium raimondii SWEET genes were obtained, distributed unevenly or clustered among 11 chromosomes, divided into three subfamilies of different functions. Transmembrane domain prediction showed that most of the GrSWEETs contained 7 transmembrane domains and a small fraction contained 6 or 8 transmembrane domains. Gene structure analysis showed that in addition to SWEET6, SWEET7, SWEET9 and SWEET19 with 4 introns, the remaining 27 SWEETs contained 5 introns. The results provide a solid data base for further study on functions of SWEET genes in cotton growth and development.

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