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腺三酸盐减轻了玉米幼苗中高温增强的草甘毒性

Yifei Zhang¹, Jiayu Li², Song Yu¹

¹College of Agriculture, Heilongjiang Bayi Agricultural University/Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, 163319, Heilongjiang, China; Key Laboratory of Low-carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing, 163319, Heilongjiang, China.

Plant physiology and biochemistry : PPB

|March 31, 2024

概括

细胞外ATP通过增强抗氧化剂反应和减少除草剂残留物来减轻热应激下玉米苗中的草甘毒性. 这涉及NADPH氧化酶依赖信号,为作物保护提供了一种新的策略.

科学领域:

植物生理学植物生理学
环境毒理学环境毒理学
生物化学生物化学

背景情况:

细胞外ATP对于植物应激反应至关重要.
草甘除草剂导致毒性,高温加剧了毒性.
了解ATP在减轻除草剂压力的作用对于作物弹性至关重要.

研究的目的:

调查外源ATP是否可以在高温下减轻玉米幼苗中的草甘毒性.
确定抗氧化剂反应在ATP介导的保护中对草甘和热应激的作用.
探索NADPH氧化酶 (NOX) 和反应性氧物种 (ROS) 在这个过程中的参与.

主要方法:

在受控室温 (25°C) 和高温 (35°C) 下,用草甘和/或ATP处理了玉米苗.
测量包括植物生长,什基米酸积累,脂质过氧化,林,H2O2含量,抗氧化酶活动和基因表达 (CAT1,GR1,γ-ECS).
评估了NADPH氧化酶 (NOX) 活性和超氧化离子 (O2•−) 生产,以及NOX抑制的效果.

主要成果:

草甘抑制了玉米的生长,增加了氧化应激,高温加剧了这种影响.
外源ATP减轻了草甘诱导的生长抑制和氧化应激.
ATP治疗逆转了高温引起的抗氧化酶活性和基因表达的衰减.
ATP减少了草甘残留的积累,并与NOX活性和ROS信号传递有关.

结论:

细胞外ATP减轻了玉米幼苗中的草甘毒性,特别是在高温压力下.
ATP增强了抗氧化反应,并调节了依赖NOX的ROS信号,用于排毒.
这项研究提出了一种新的方法,用于减少面临环境压力的作物中除草剂的毒性.

关键词:

这就是ATPATPATP ATP.葡萄糖氨酸 (Glutathione) 是一种杀草剂是一种除草剂.高温的高温的高温的高温.植物毒性植物毒性

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