Characterization and Potential Function Analysis of the SRS Gene Family in Brassica napus

Author:

Hu Ming12,Xie Meili2ORCID,Cui Xiaobo2ORCID,Huang Junyan2,Cheng Xiaohui2,Liu Lijiang2,Yan Shunping1ORCID,Liu Shengyi2ORCID,Tong Chaobo2

Affiliation:

1. College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China

2. Key Laboratory of Biology and Genetics Improvement of Oil Crops, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China

Abstract

SRS (SHI-related sequence) transcription factors play a crucial role in plant growth, development, and abiotic stress response. Although Brassica napus (B. napus) is one of the most important oil crops in the world, the role of SRS genes in B. napus (BnSRS) has not been well investigated. Therefore, we employed a bioinformatics approach to identify BnSRS genes from genomic data and investigated their characteristics, functions, and expression patterns, to gain a better understanding of how this gene family is involved in plant development and growth. The results revealed that there were 34 BnSRS gene family members in the genomic sequence of B. napus, unevenly distributed throughout the sequence. Based on the phylogenetic analysis, these BnSRS genes could be divided into four subgroups, with each group sharing comparable conserved motifs and gene structure. Analysis of the upstream promoter region showed that BnSRS genes may regulate hormone responses, biotic and abiotic stress response, growth, and development in B. napus. The protein-protein interaction analysis revealed the involvement of BnSRS genes in various biological processes and metabolic pathways. Our analysis of BnSRS gene expression showed that 23 BnSRS genes in the callus tissue exhibited a dominant expression pattern, suggesting their critical involvement in cell dedifferentiation, cell division, and tissue development. In addition, association analysis between genotype and agronomic traits revealed that BnSRS genes may be linked to some important agronomic traits in B. napus, suggesting that BnSRS genes were widely involved in the regulation of important agronomic traits (including C16.0, C18.0, C18.1, C18.2 C18.3, C20.1, C22.1, GLU, protein, TSW, and FFT). In this study, we predicted the evolutionary relationships and potential functions of BnSRS gene family members, providing a basis for the development of BnSRS gene functions which could facilitate targeted functional studies and genetic improvement for elite breeding in B. napus.

Funder

the National Natural Science Foundation of China

the National Key Research and Development Program of China

Central Public-interest Scientific Institution Basal Research Fund

the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences

the China Agriculture Research System of MOF and MARA

Publisher

MDPI AG

Subject

Genetics (clinical),Genetics

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