甜MYB基因的综合生物信息学和转录基因分析揭示了IBMYB150在盐耐受性中的作用
Can Huang1, Jing Yu1, Yumeng Lv1
1Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, 221116, Jiangsu Province, China.
Plant cell reports
|February 10, 2026
概括
研究人员在甜中发现了339个MYB基因,IbMYB150增强了盐分耐受性. 这些发现揭示了IBMYB基因在植物非生物应激反应中的关键作用.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 生物化学 生物化学
背景情况:
- MYB转录因子是植物对环境压力的反应的关键调节者.
- 甜 (Ipomoea batatas) 中MYB基因的系统信息有限,阻碍了功能研究.
研究的目的:
- 系统地识别和描述甜中的MYB基因.
- 为了研究在非生物应激耐受性中选择的IBMYB基因的功能.
主要方法:
- 对339个IBMYB基因进行全基因组识别和遗传学分析.
- 对保存的图案,基因结构和合成的分析.
- 转录组查和压力诱导的IBMYBs的qRT-PCR验证.
- 在酵母中异质表达和在Arabidopsis中异质表达以评估盐分耐受性.
主要成果:
- 确定了339个假定的IBMYB基因,并将其分类为不同的子组.
- 分段重复被确定为IBMYB基因扩张的主要驱动因素.
- 五个IbMYB基因 (IbMYB-061/-065/-095/-150/-280L) 已被证实是无生物压力诱导的核转录激活剂.
- 异质表达增强了酵母中的盐耐受性,而IbMYB150改善了Arabidopsis中的盐耐受性.
结论:
- 这项研究提供了对IbMYB基因的全面识别和功能分析.
- IbMYB基因在甜对非生物压力的反应中起着至关重要的作用,特别是对盐的耐受性.
- IbMYB150显示了提高作物对盐度压力的弹性潜力.
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