在Ni压力下的黄瓜植物中,烯酸特征和与相关的酶活性
Ewa Gajewska1, Aleksandra Witusińska1, Andrzej Kornaś2
1Faculty of Biology and Environmental Protection, Department of Plant Physiology and Biochemistry, University of Lodz, Banacha 12/16, 90-237 Łódź, Poland.
International journal of molecular sciences
|February 13, 2025
概括
(Ni) 暴露会减少黄瓜植物的生长和叶绿素. 改变了代谢,增加了叶子中的过氧化酶活性和红素,但不是根,表明器官特异性影响.
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:
- (Ni) 的植物毒性影响植物细胞结构和功能.
- 关于Ni对植物代谢的特定影响的知识有限.
研究的目的:
- 研究Ni对化合物组成,相关酶活性和黄瓜植物中素积累的影响.
- 确定Ni的作用是否是器官特异性的.
主要方法:
- 评估了植物生长,叶绿素和胡卜素含量以及叶绿素光参数.
- 分析了酸和黄类型的样本,以及素的积累.
- 测量了过氧化酶,氨酸酶和多氧化酶的活性.
主要成果:
- 尼治疗减少了生长,叶绿素和胡卜素,并改变了叶绿素的光.
- 叶子中的自由酸含量增加,烯基的概况发生了变化.
- 叶子过氧化酶活性和红素沉积显著增加,而根水平保持不变.
- 氨酸酶和多氧化酶的活动不受Ni的影响.
结论:
- 的植物毒性在黄瓜植物中引起器官特异性反应.
- 观察到的化合物变化很可能是由于现有化合物的转化而不是新合成.
- 叶子中的过氧化酶活性和素的增加表明它在Ni排毒或防御中起作用.
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