Genome-wide identification of SIMILAR to RCD ONE (SRO) gene family in rapeseed (Brassica napus L.) reveals their role in drought stress response

文献类型： 外文期刊

第一作者： Jiang, Huanhuan

作者： Jiang, Huanhuan;Zhang, Yuling;Li, Jia;Liang, Fenghao;Tang, Rong;Zhou, Yuyu;Zhang, Chao;Tang, Rongzi

作者机构：

关键词： Rapeseed; similar to RCD1 (SRO); abiotic stress; gene expression; transcription factor

期刊名称：PLANT SIGNALING & BEHAVIOR （ 影响因子：2.8； 五年影响因子：3.4 ）

ISSN： 1559-2316

年卷期： 2024 年 19 卷 1 期

页码：

收录情况： SCI

摘要： Rapeseed (Brassica napus L.) is an important oilseed crop widely cultivated worldwide, and drought is the main environmental factor limiting its yield enhancement and the expansion of planted areas. SIMILAR TO RCD ONE (SRO) is a plant-specific small gene family that plays a crucial role in plant growth, development, and responses to abiotic stresses such as drought. However, the functional role of SROs in rapeseed remains poorly understood. In this study, 19 BnaSROs were identified from the rapeseed genome, with 9, 10, 10, 18, and 20 members identified from the genomes of Brassica rapa, Brassica nigra, Brassica oleracea, Brassica juncea, and Brassica carinata, respectively. We then analyzed their sequence characteristics, phylogenetic relationships, gene structures, and conserved domains, and explored the collinearity relationships of the SRO members in Brassica napus and Brassica juncea. Next, we focused on the analysis of tissue expression and stress-responsive expression patterns of rapeseed SRO members and examined their expression profiles under ABA, MeJA and water-deficit drought treatments using qPCR. Transcriptome data analysis and qPCR detection indicated that BnaSROs exhibit multiple stress-responsive expression patterns. BnaSRO1 and BnaSRO11, which are likely to function through interactions with NAC transcription factors, were screened as major drought-regulated members. Our results provide a solid foundation for functional analysis of the role of the SRO gene family in abiotic stress responses, especially drought stress responses, in rapeseed.

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