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热和干旱耐受性的代谢机制:对压力耐受性的影响繁殖

Noureddine El Haddad^1,2, Youness En-Nahli^1,3,4, Hasnae Choukri^1,2

¹International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat 10112, Morocco.

Plants (Basel, Switzerland)

|December 9, 2023

概括

植物在高温和干旱压力下表现出增加的抗氧化活性和代谢物积累. 像ILL7814和ILL7835这样的特定加入表现出增强的耐受性机制,这对于培育适应气候变化的作物非常有价值.

科学领域:

植物科学植物科学
环境科学环境科学
生物化学生物化学

背景情况:

气候变化加剧了非生物压力,如高温和干旱.
这些压力显著影响作物产量和粮食安全.
了解植物耐受性机制对于开发弹性作物至关重要.

研究的目的:

为了研究的生物化学和代谢反应,对热和干旱的压力.
为了确定对这些非生物压力有较高耐受性的基因型.

主要方法:

在高温压力 (32/20 °C) 下评估了十二个镜片接入.
在干旱压力下评估了七个接 (50%的田间容量).
测量了关键的生理和生化参数,包括酶活性 (catalase,APX,SOD),林,黄类,醇,宁,抗氧化活性和糖含量.

主要成果:

所有加入都显示了在两种压力下都增加了催化酶活性. ILL7814和ILL7835的累积率最高.
亚酸盐过氧化酶 (APX) 的活性在高温下显著增加,特别是在耐受性的加入中.
在两种压力条件下,ILL7814和ILL7835都表现出较高的普罗林,总黄,醇,宁和抗氧化剂活性.
溶解糖和降解糖含量各不相同,特定的加入在各自的应力下显示出高积累.

结论:

豆接入表现出明显的新陈代谢和酶反应热和干旱压力.
加入ILL7814和ILL7835表明显著的耐受性,积累关键的保护性化合物.
这些发现为经过标记器辅助的选择和培育耐压的豆品种提供了基础.

关键词:

抗氧化作用的抗氧化作用.亚酸盐过氧化酶的使用方法催化酶的催化剂是什么干旱造成的压力是干旱.黄类化合物黄类化合物热应激是一种热应激.普罗林是什么意思普罗林是什么意思糖类糖类是一种糖类.超氧化物脱酶的作用

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