在低应激下对两种日本大米种类的比较生理和转录基因表征
Yu Zou1, Yi Ren1, Shuxin Jiang2
1Anhui Province Key Laboratory of Rice Germplasm Innovation and Molecular Improvement, Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China.
Plants (Basel, Switzerland)
|December 31, 2025
概括
这项研究揭示了低如何影响大米根生长和基因表达. 培养器HJ753比DJ8显示出更好的利用效率 (NUE),为培养更有弹性的米品种提供了洞察力.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 分子生物学分子生物学
背景情况:
- (N) 对大米至关重要,但低效的使用会导致环境问题.
- 米的低利用效率 (NUE) 威胁到农业的可持续性.
- 了解N反应机制对于开发高效的水品种至关重要.
研究的目的:
- 在正常和低 (LN) 条件下比较两种水品种的生理和转录基因根形状.
- 研究根部发育和N反应机制中的基因型差异.
- 识别用于培育N效率低的米的分子洞察力.
主要方法:
- 在正常和LN治疗下对根生理特征和酶活性 (NR,GS) 的比较分析.
- 转录形状分析用于识别在应对LN压力的过程中差异表达的基因 (DEGs).
- 通过KEGG路径分析来确定DEGs的功能.
主要成果:
- 低 (LN) 抑制了两种品种的根生长并影响了根酶活性.
- 培养器HJ753在N条件下表现出比DJ8更高的酸盐减少酶 (NR) 和谷氨酸合成酶 (GS) 活性.
- 确定了5000多个DEG,主要涉及DNA复制,N代谢和植物激素信号,观察到基因型特定的模式.
结论:
- 在米根发育和在LN压力下N反应方面存在显著的基因型差异.
- 对代谢和利用途径的分子洞察力为培育低效米提供了基础.
- 这项研究通过改进的NUE支持开发可持续的水种植实践.
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