聚乙烯糖醇对的有害影响的保护作用
Nimisha Amist1, Shubhra Khare2, Zeba Azim3
1Department of Botany, Ewing Christian College, University of Allahabad, Prayagraj, 211003, India.
Applied biochemistry and biotechnology
|August 5, 2024
概括
干旱压力加剧了 (Cd) 在苗中的毒性. 缺水扩大了Cd积累和氧化损伤,显著影响了植物生长和生理功能.
科学领域:
- 环境科学 环境科学
- 植物生理学 植物生理学
- 毒理学 毒理学 毒理学
背景情况:
- (Cd) 是一个重要的环境污染物,对植物有严重的毒性影响.
- 缺水 (干旱) 是一种普遍的非生物压力,影响着许多植物生理过程.
- 了解Cd毒性和干旱压力之间的相互作用对于植物生存和农业生产率至关重要.
研究的目的:
- 研究 (Cd) 和缺水对Capsicum frutescens幼苗的联合影响.
- 评估干旱压力如何改变植物对Cd暴露的反应.
- 为了确定单一和联合Cd和缺水治疗引起的生理和生化变化.
主要方法:
- 红 (Capsicum frutescens) 的幼苗是在水栽培溶液中种植的.
- 用 (Cd) 和/或聚乙烯糖醇 (PEG) 处理种子,以诱导缺水.
- 评估的参数包括Cd积累,根和芽生长,颜料含量,蛋白质含量,糖含量,酸盐减少酶活性,胺含量,氧化损伤标志物 (电解质泄漏,脂质过氧化) 和抗氧化酶活性.
主要成果:
- 在没有PEG (缺水) 的情况下,积量最高.
- 所有治疗都抑制了根和芽生长,在Cd暴露时观察到最大的抑制.
- 颜料,蛋白质,糖含量和酸盐还原酶活性下降,而林含量在治疗过程中增加.
- 诱导了氧化损伤,由改变的电解质泄漏,脂质过氧化和抗氧化酶活性变化所证明.
- 缺水显著增加了Cd对苗的毒性影响.
结论:
- 缺水加剧了Capsicum frutescens中的毒性.
- 结合Cd和干旱压力导致植物显著的生理障碍和氧化压力.
- 这些发现突出了水的可用性在调节重金属植物毒性的关键作用.
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