转录因子OsMADS61积极调节米的根延长和使用效率
Daojian Wang1, Zhihao Liang2, Changxiao Gu1
1State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
Plant communications
|December 5, 2025
概括
米根适应低气,通过增强根生长,特别是用酸盐. OsMADS61基因调节了这种酸盐反应,提高了作物中利用效率 (NUE).
科学领域:
- 植物生物学 植物生物学
- 遗传学 是一个遗传学.
- 农业科学 农业科学
背景情况:
- 植物利用复杂的转录网络来根部适应的可用性.
- 了解根源食反应及其与使用效率 (NUE) 的联系对于作物改进至关重要.
- 不完全理解酸盐依赖根形态发生的机制.
研究的目的:
- 研究酸盐在根发育中的作用.
- 确定对酸盐敏感的根食和NUE的关键调节者.
- 阐明底层酸盐同化和根生长的分子机制.
主要方法:
- 在不同形式 (酸盐与) 和度下对根延长进行比较分析.
- 在反应中涉及的转录因子的识别和表征.
- 促进体结合测定和下游基因标的分析.
- 研究氧化在根髓系统发育中的作用.
主要成果:
- 与相比,大米在酸盐下表现出更强的根延长,特别是在低水平下.
- 转录因子OsMADS61被确定为依赖酸盐的根反应和NUE的关键调节者.
- OsMADS61直接激活了参与酸盐代谢的基因 (OsNRT2.1,OsNR2).
- 通过OsMADS61调节的氧化促进了根系中细胞的增殖.
结论:
- OsMADS61是一个关键的调节器,将酸盐的可用性与的根形态和使用效率联系起来.
- 酸盐诱导的氧化信号在根髓系统细胞增殖中发挥着精确的作用.
- 通过像OsMADS61这样的基因准N-自适应根反应是培育高NUE作物的有希望的策略.
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