Zhang Yujia, Zhang Liguang, Chen Mingxun, Wang Jiagang, Dong Shuqi, Yuan Xiangyang, Li Xiaorui
State Key Laboratory of Sustainable Dryland Agriculture (in preparation), College of Agronomy, Shanxi Agricultural University, Taiyuan, 030031, China.
College of Agronomy, Northwest A&F University, Yangling, 712100, China.
BMC Plant Biol. 2025 Apr 5;25(1):432. doi: 10.1186/s12870-025-06442-9.
Dehydration response element binding factors (DREBs) are a family of plant-specific transcription factors that regulate plant responses.
In this study, members of the SiDREB gene family were identified and analyzed in terms of their physicochemical properties, phylogeny, and structure of the encoded proteins. The expression patterns of the DREB transcription factors in foxtail millet under stress were analysed by combining the qRT-PCR data for foxtail millet after exposure to low temperature, abscisic acid (ABA), and osmotic stress (20% PEG 6000). There were 56 SiDREB genes, which were divided into six subgroups, that were located on nine chromosomes of foxtail millet. Chromosomal localization showed that the SiDREB genes were unevenly distributed across nine foxtail millet chromosomes. Furthermore, qRT‒PCR experiments revealed that 19 SiDREB genes play a role in the response to abiotic stress and ABA.
The results of this study lay a foundation for further research on the functions of the DREB genes in foxtail millet and will be beneficial foe the genetic improvement of this species.
脱水响应元件结合因子（DREB）是一类调节植物响应的植物特异性转录因子家族。
在本研究中，对谷子SiDREB基因家族成员进行了鉴定，并从其理化性质、系统发育和编码蛋白结构方面进行了分析。结合谷子在低温、脱落酸（ABA）和渗透胁迫（20%聚乙二醇6000）处理后的qRT-PCR数据，分析了DREB转录因子在谷子胁迫下的表达模式。谷子中有56个SiDREB基因，分为6个亚组，分布在谷子的9条染色体上。染色体定位表明，SiDREB基因在谷子的9条染色体上分布不均匀。此外，qRT-PCR实验表明，19个SiDREB基因在非生物胁迫和ABA响应中发挥作用。
本研究结果为进一步研究DREB基因在谷子中的功能奠定了基础，将有助于该物种的遗传改良。
