Genome-wide identification and characterization of the <i>WOX</i> gene family in <i>Brassica juncea</i>.

Wenlong Yang; Chu XU; Jiaqi Han; Xiaohui Zhang; Jiangping Song; Huixia Jia; Haiping Wang

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Genome-wide identification and characterization of the WOX gene family in Brassica juncea.

Author: Wenlong YANG ¹ ; Chu XU ¹ ; Jiaqi HAN ¹ ; Xiaohui ZHANG ¹ ; Jiangping SONG ¹ ; Huixia JIA ¹ ; Haiping WANG ¹
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1. Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publication Type:Journal Article
Keywords: WOX gene family; Brassica juncea; bioinformatics analysis
MeSH: Mustard Plant/genetics*; Multigene Family/genetics*; Transcription Factors/metabolism*; Plants/genetics*; Promoter Regions, Genetic; Phylogeny; Gene Expression Regulation, Plant; Plant Proteins/metabolism*
From: Chinese Journal of Biotechnology 2023;39(2):537-551
CountryChina
Language:Chinese
Abstract: The WUSCHEL related-homeobox (WOX) family is one of the plant-specific transcription factor families, playing important roles in plant growth and development. In this study, 51 WOX gene family members were identified from the genome data of Brassica juncea by searching and screening with HUMMER, Smart and other software. Their protein molecular weight, amino acids numbers, and isoelectric point were analyzed by using Expasy online software. Furthermore, bioinformatics software was used to systematically analyze the evolutionary relationship, conservative region, and gene structure of the WOX gene family. The mustard WOX gene family was divided into three subfamilies: ancient clade, intermediate clade, and WUS clade/modern clade. Structural analysis showed that the type, organization form and gene structure of the conservative domain of WOX transcription factor family members in the same subfamily were highly consistent, while there was a certain diversity among different subfamilies. 51 WOX genes are distributed unevenly on 18 chromosomes of mustard. Most of the promoters of these genes contain cis acting elements related to light, hormone and abiotic stress. Using transcriptome data and real-time fluorescence quantitative PCR (qRT-PCR) analysis, it was found that the expression of mustard WOX gene was spatio-temporal specific, among which BjuWOX25, BjuWOX33, and BjuWOX49 might play an important role in the development of silique, and BjuWOX10, BjuWOX32, and BjuWOX11, BjuWOX23 respectively might play an important role in the response to drought and high temperature stresses. The above results may facilitate the functional study of mustard WOX gene family.