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外源性谷氨保护小麦幼苗免受高温和缺水损害

Mohamed Suliman Eltyeb Suliman^1,2, Safiya Babiker Mustafa Elradi^1,2, Guisheng Zhou^3,4

¹Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China.

Scientific reports

|March 4, 2024

概括

谷氨 (GSH) 的应用在高温和干旱下改善了小麦苗木的生长. 通过增强抗氧化活性和改善生理特征,减轻压力影响,GSH修正案保护了植物.

科学领域:

农业科学农业科学
植物生理学植物生理学
环境压力生物学

背景情况:

高温和干旱在早期发展阶段显著限制了小麦的生长.
这些非生物压力对小麦幼苗的关键生理和形态参数产生负面影响.
了解减缓策略对于在气候变化下维持小麦生产至关重要.

研究的目的:

调查土壤应用的谷氨 (GSH) 在减轻高温 (HT) 和干旱对小麦的不良影响方面的有效性.
为了确定GSH的最佳度,以减轻联合HT和干旱压力.
评估GSH对根和芽生长,生理参数和抗氧化酶活性的影响.

主要方法:

小麦苗被单独和组合地对高温 (33°C) 和干旱 (60%的田间容量) 条件进行了控制.
使用不同度的谷氨 (0.0,0.5,1.0,2.0毫米) 进行土壤修饰.
测量包括根形态,发芽长度,叶面积,相对含水量,干物质,叶绿素含量,甲 (MDA),可溶性蛋白质和抗氧化酶活动 (SOD,CAT,APX).

主要成果:

高温和干旱单独和联合减少了根和芽生长,叶子含水量和干燥物质.
应用谷氨,特别是0.5毫米,显著促进了根和芽的发育,改善了叶子的相对含水量.
虽然联合压力减少了叶绿素,但0.5毫米的GSH增加了叶绿素a,b和总叶绿素. 它还降低了MDA,并在压力下增加了可溶性蛋白和抗氧化酶活性.

结论:

谷氨 (GSH) 有效地减轻了高温和干旱压力对小麦幼苗的负面影响.
在非生物压力条件下,GSH增强了植物生长,生理状态和抗氧化剂防御机制.
在土壤中应用GSH是一种有前途的策略,可以提高小麦对环境压力的抵抗力.

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