干旱下的生化和表观遗传调节:记住大米的压力耐受机制
Suresh Kumar1, Karishma Seem1, Trilochan Mohapatra2
1Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
Life (Basel, Switzerland)
|May 27, 2023
概括
植物可以记住干旱压力,在几代人之间保持有益的生化和表观遗传变化. 这种压力初始化增强了植物的弹性,并可以改善作物产量,以实现全球粮食安全.
科学领域:
- 植物生物学 植物生物学
- 压力生理学 压力生理学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 植物需要对环境变化做出快速反应才能生存.
- 干旱压力对植物生长和生产力产生重大影响.
- 植物对压力的记忆,类似于动物记忆,是一个新兴的研究领域.
研究的目的:
- 为了研究大米基因型中的干旱压力记忆.
- 分析压力诱导的生理和表观遗传变化的遗传.
- 探索开发耐压作物的潜在应用.
主要方法:
- 在花开之前,大米植物遭受干旱压力,然后再进行灌.
- 测量了物理-生物化学 (叶绿素,,,抗氧化活性,脂质过氧化) 和表观遗传 (5-甲基细胞素) 参数.
- 随后的几代人从压力培养植物的种子中生长,以评估遗传.
主要成果:
- 干旱压力显著增加了proline,总,抗氧化活性和5-甲基细胞素 (5-mC) 水平,同时降低了叶绿素含量.
- 在压力戒断后,林,,抗氧化活性和5-mC的升高水平被部分保留.
- 这些增强的生化和表观遗传特征被传给了接下来的两代人.
结论:
- 米表现出一种压力记忆形式,保留和传递适应性生理和表观遗传修饰.
- 这种压力启动现象为培育适应气候变化的作物提供了一个有希望的途径.
- 利用植物记忆可以为可持续农业和全球粮食安全做出贡献.
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