在小麦/玉米交叉作物中,水应激记忆在雨水条件下调节光合作用和抗氧化反应
Sadam Hussain1,2, JinJin Wang1,2, Muhammad Asad Naseer1,2
1College of Agronomy, Key Laboratory of Crop Physio-Ecology and Tillage in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, China.
Scientific reports
|August 22, 2023
概括
小麦和玉米的交叉作物通过改善生理和分子机制,包括抗氧化活性和基因表达,提高干旱耐受性. 这种可持续的做法在有限的水资源条件下提高了作物表现.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 分子生物学分子生物学
背景情况:
- 干旱压力显著影响了中国洛斯高原雨小麦和玉米的生产力.
- 间作物是一种可持续的农业实践,可以在非生物压力下提高作物表现.
- 基础上的分子机制 间作物诱导的干旱耐受性尚未完全理解.
研究的目的:
- 评估杂交作物 (小麦和玉米) 和 (N) 应用对小麦和玉米在雨水条件下的生理,生化和分子特征的影响.
- 研究抗氧化酶和基因表达在间作物诱导干旱耐受性中的作用.
- 了解杂交作物和N施肥对作物表现的综合影响.
主要方法:
- 一项为期两年的实地研究,比较小麦单作物 (WMC),玉米单作物 (MMC),杂交小麦 (IW) 和杂交玉米 (IM) 与对照和全剂量N.应用.
- 测量包括叶绿素光,气交特性,脂质过氧化,抗氧化特性和六个耐受性基因的表达.
- 分析氧化物积累和MDA含量的分析.
主要成果:
- 与单一作物相比,间作物 (IW和IM) 显著改善了叶绿素光,光合作用,口腔导电性和用水效率.
- 插作增强了抗氧化活性和氧化物积累,减少了脂质过氧化 (MDA含量).
- 添加进一步改善了交叉作物下的生理和生化特征,并调节了关键抗氧化基因的转录水平.
结论:
- 麦子和玉米的交叉作物有效地通过改善生理和生化反应来提高干旱耐受性.
- 的应用协同增强了杂交作物的好处,优化了干旱下的作物表现.
- 这项研究阐明了小麦和玉米中交叉作物诱导的干旱耐受性的生理,生化和分子基础.
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