在植物性内精子发育过程中,通过OsNAC02 Ko-mutant的能量恒温控制性和早产
Mei Yan1, Guiai Jiao1, Gaoneng Shao1
1State Key Laboratory of Rice Biology, Key Laboratory of Rice Biology and Breeding of Ministry of Agriculture, China National Rice Research Institute, Hangzhou, 311400, China.
BMC plant biology
|March 18, 2024
概括
大米 (Oryza sativa) 中的OsNAC02功能丧失导致过早成熟和状内. 这种NAC转录因子在早期大米种子发育期间调节细胞周期中起着关键作用.
科学领域:
- 植物遗传学 植物遗传学
- 分子生物学分子生物学
- 米育种 在米育种方面
背景情况:
- 米 (Oryza sativa) 的性是一种常见的缺陷,与非生物压力或粉代谢中断有关.
- 由于单个基因功能丧失,特别是NAC转录因子造成的状的遗传基础尚未得到充分理解.
研究的目的:
- 为了研究大米中OsNAC02基因的功能.
- 为了确定基底的分子机制粉状在一个米突变与损害的OsNAC02.02的米突变.
主要方法:
- 对Ko-Osnac02突变和野生类型 (WT) 米的表型分析.
- RNA测序以识别突变和WT种子中的差异表达基因 (DEGs).
- 分析粉和可溶糖的含量.
- 蛋白质与蛋白质相互作用的预测.
主要成果:
- Ko-Osnac02突变体表现出过早成熟 (15天早) 和状的内,具有白色核和白色腹部的特征.
- 突变的内精显示出粉糖含量降低和可溶糖含量增加.
- 图布林基因的下调和MCM家族基因的改变表达表明细胞循环调节缺陷.
- 参与粉降解的OsBAM2在突变分子中显著上调.
结论:
- OsNAC02基因对于调节早期子内的发育过程中的细胞周期至关重要.
- 在Ko-Osnac02突变体中,OsNAC02功能的丧失导致过早发育和状内,影响谷物质量.
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