干旱压力对冬季小麦 (Triticum aestivum L.) 的跨代和跨代影响
Carolyn Mukiri Kambona1, Patrice Ahossi Koua1,2, Jens Léon1,3
1Department of Plant Breeding, Institute of Crop Science and Resource Conservation (INRES), RheinischeFriedrich-Wilhelms-University, Bonn, Germany.
Physiologia plantarum
|June 13, 2023
概括
父母和祖父母的干旱压力显著影响冬季小麦后代的特征,提高干旱下的表现. 这种压力记忆效应是复杂的,取决于生成,暴露和季节.
科学领域:
- 植物生物学 植物生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 农业科学 农业科学
背景情况:
- 父母的环境可以影响后代的特征,这种现象被称为压力记忆.
- 植物中压力记忆效应的进化和生态意义,包括发生,持久性和适应价值,仍然不确定.
研究的目的:
- 调查跨代 (祖父母) 和代际 (父母) 干旱压力对冬季小麦后代的记忆效应.
- 分析压力记忆在几代人间对各种植物和种子质量特征的综合影响.
主要方法:
- 15种冬季小麦品种经历了两个季节的干旱和良好的灌条件.
- 这些治疗的种子被用来创建父母和祖父母的所有干旱暴露历史的组合.
- 在控制和干旱条件下评估后代的特征,以量化记忆效应.
主要成果:
- 在大多数特征中观察到显著的压力记忆效应,变化范围为+787%至-39.0%.
- 压力记忆表达因暴露的产生,暴露次数,特定特征和季节而有所不同.
- 在干旱期间,祖父母和父母的综合压力记忆对后代的特征产生了附加效应,增强了植物的高度,生物质,谷物产量和水的潜力.
结论:
- 干旱压力记忆是影响冬季小麦表现的重要因素,其影响复杂且取决于环境.
- 了解这些跨代影响对于开发适应气候变化的作物和改进农业战略至关重要.
- 对压力记忆的生理和代谢基础的进一步研究可以为植物适应提供更深入的见解.
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