小麦WRKY转录因子TaWRKY24在转基因植物中赋予干旱和盐分耐受性
Yongang Yu1, Lingyun He2, Yanxia Wu2
1School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China; Collaborative Innovation Center of Modern Biological Breeding of Henan Province, Henan Institute of Science of Technology, XinXiang, 453003, China.
小麦基因TaWRKY24增强了植物对干旱和盐分压力的抵抗力. 过度表达改善了幼苗的生长和承受压力的能力,使其成为改善小麦作物抵抗力的关键候选者.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 干旱和盐分压力严重阻碍了全球的作物生产率.
- WRKY转录因子是植物对环境压力因素反应的关键调节者.
研究的目的:
- 克隆和表征小麦基因TaWRKY24并研究其在非生物应激耐受性中的作用.
主要方法:
- 在小麦中克隆和描述TaWRKY24的基因.
- 在各种压力条件下对TaWRKY24表达的分析 (PEG6000,盐,H2O2,ABA,MeJA,乙烯).
- 在烟草和小麦中分别进行过度表达和沉默研究,加上生理和生化分析.
主要成果:
- TaWRKY24表达是由多种非生物应力诱导的,它局部化到具有转录激活能力的核.
- 在烟草中过度表达TaWRKY24,在曼尼托尔和NaCl压力下增强了种子发芽和根生长,增加了proline和可溶糖含量,同时减少了活性氧物种 (ROS) 和甲 (MDA).
- 在盐和干旱压力下,制小麦中的TaWRKY24会减少生长.
结论:
- 小麦TaWRKY24在调解植物对盐和干旱压力的反应方面发挥着至关重要的作用.
- TaWRKY24是一种有前途的候选基因,可以通过育种计划开发抗压性小麦品种.
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