Genome-wide identification and analysis of the WUSCHEL-related homeobox (WOX) gene family in allotetraploid Brassica napus reveals changes in WOX genes during polyploidization.

ABSTRACT:

Background

WUSCHEL-related homeobox (WOX) genes encoding plant-specific homeobox (HB) transcription factors play important roles in the growth and development of plants. To date, WOX genes has been identified and analyzed in many polyploids (such as cotton and tobacco), but the evolutionary analysis of them during polyploidization is rare. With the completion of genome sequencing, allotetraploid Brassica napus and its diploid progenitors (B. rapa and B. oleracea) are a good system for studying this question.

Results

In this study, 52, 25 and 29 WOX genes were identified in allotetraploid B. napus (2n = 4x = 38, A_nC_n), the A_n genome donor B. rapa (2n = 2x = 20, A_r) and the C_n genome donor B. oleracea (2n = 2x = 18, C

SUBMITTER: Li M 

PROVIDER: S-EPMC6482515 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature