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甲基斯酸盐通过增强光合作用和抗氧化剂防御系统来减轻菜中Cd诱导的脂质过氧化

Mingjun Miao^1,2,3, Jiajia Li¹, Xiaokui Lei^1,2

¹Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu, 610066, China.

Scientific reports

|November 18, 2025

概括

甲基斯酸盐 (MeJA) 有效地减轻了菜中的 (Cd) 毒性. MeJA的应用增强了植物生长,光合作用和抗氧化活性,同时减少了Cd的积累.

科学领域:

植物科学植物科学
环境毒理学环境毒理学
生物化学生物化学

背景情况:

(Cd) 是一种有毒的重金属,对植物发育和新陈代谢产生负面影响.
了解Cd毒性的机制和制定缓解策略对于农业和环境健康至关重要.

研究的目的:

调查甲基莉酸盐 (MeJA) 对 (Cd) 毒性的缓解作用.
阐明MeJA对Cd压力的保护作用的基本机制.

主要方法:

菜植物受到Cd压力 (50μmol/L),并通过在水培系统中通过叶子喷以不同度的MeJA (1,5,25,100μmol/L) 进行处理.
对生长参数,光合作用特性,生理功能和Cd吸收的评估影响.
评估了抗氧化酶活性 (POD,SOD,CAT) 和活性氧物种 (ROS),甲基 (MDA),プロ林和可溶性蛋白质的水平.

主要成果:

外源应用25μmol/L MeJA显著改善了菜的生长,增加了植物的高度,根的长度,茎的厚度和生物量.
通过增加净光合作用率,口腔导电率,细胞间二氧化碳度和透气率,MeJA提高了光合作用效率,从而导致更高的叶绿素和胡卜素含量.
MeJA的应用促进了抗氧化酶活动 (POD,SOD,CAT),降低了ROS和MDA水平,并调节了proline和可溶性蛋白质含量,从而减轻了Cd诱导的氧化应激.

结论:

甲基斯酸盐 (MeJA) 通过增强生长,光合作用和抗氧化剂防御机制,有效地减轻 (Cd) 在菜中的毒性.
通过MeJA处理,可以减少菜植物中Cd的吸收和积累.
这些发现提供了关于MeJA在植物中对重金属应激的保护作用的见解.

关键词:

在Cd压力压力.增长生理学增长生理学缓解影响的缓解效应.光合作用光合作用菜和西班牙菜.

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