过度表达果MdNRT1.7通过调节ROS清理增强了低耐受性
Qian Wang1, Ke Liu1, Junrong Li1
1Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China.
International journal of biological macromolecules
|January 1, 2025
概括
果果果果果果果是什么意思
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 低的可用性严重限制了全球的作物产量.
- 酸盐转运基因MdNRT1.7在减轻果 (Malus domestica) 低压力的特定功能需要阐明.
研究的目的:
- 调查MdNRT1.7在调节果中低反应中的作用.
- 为了确定控制MdNRT1.7表达的转录因子.
主要方法:
- 烟草 (Nicotiana benthamiana) 的农菌媒介转化,以研究MdNRT1.7的功能.
- 酵母单杂交 (Y1H),双化酶 (LUC) 记者测定和电泳性移动性转移测定 (EMSA) 来识别和验证转录因子结合.
- 在低条件下对转基因植物和野生植物进行生理和分子分析.
主要成果:
- 烟草中MdNRT1.7的过度表达增强了对低应激的耐受性,由增加的プロ林和可溶性蛋白质含量以及更高的超氧化物脱酶和过氧化酶活性证明.
- 转基因植物显示了减少的甲和过氧化水平,这表明氧化损伤较低.
- 在低应激下,转基因烟草中代谢基因的表达被上调.
- NAC转录因子MdJUB1被确定为MdNRT1.7转录的抑制剂.
结论:
- MdNRT1.7在改善植物对低压力的耐受性方面发挥着至关重要的作用.
- MdNRT1.7增强代谢,减少反应性氧物种 (ROS) 积累,并有助于整体应激弹性.
- MdJUB1对MdNRT1.7进行负调节,这表明植物中控制吸收和应激反应的复杂调节网络.
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