在玉米中通过甲酸盐,过氧化和硫化对氧化还原稳定和激素水平的不同调节
Kalpita Singh1,2, Muhammad Ahsan Asghar1,3, Kristóf Jobbágy1,4
1Agricultural Institute, HUN-REN Centre for Agricultural Research, Martonvásár, Hungary.
Physiologia plantarum
|April 24, 2025
概括
硫化 (NaHS) 改善了玉米的氧化还原平衡,而酸盐 (Asc) 和过氧化 (H2O2) 诱导了氧化应激,影响了植物生长和荷尔蒙水平. 这突显了氧化还原调节的作用.
科学领域:
- 植物生理学 植物生理学
- 生物化学 生物化学
- 氧化压力研究研究 氧化压力研究
背景情况:
- 细胞氧化还原稳定对于植物健康至关重要.
- 亚酸盐,过氧化和硫化是通过不同的机制影响细胞氧化还原状态的关键因素.
研究的目的:
- 为了比较甲酸盐 (Asc),过氧化 (H2O2) 和硫化 (NaHS) 对玉米幼苗氧化还原和激素状况的相对影响.
- 研究这些化合物对氧化应激指标和植物生长的影响.
主要方法:
- 玉米幼苗接受了5mM H2O2 (氧化剂),5mM Asc (减氧剂) 和1mM NaHS (减氧剂) 的处理.
- 测量包括减少到氧化谷氨的比率,电解质泄漏,脂质过氧化,酶活性 (脱酸缩酶,单酸缩酶,酸酶,酸过氧化酶),压力激素水平 (雅斯蒙酸,酸,酸) 和新鲜射击重量.
- 还进行了和黄化合物的分析.
主要成果:
- NaHS显著增加了减少与氧化谷氨的比率,表明细胞环境更为减少.
- 电解酸处理降低了这种比率,导致氧化应激,由增加的电解质泄漏和脂质过氧化证明.
- H2O2对谷氨比率没有显著影响,但增加了压力激素水平,并降低了新鲜火花的重量,类似于Asc. NaHS没有抑制生长.
- 酶活性和类/黄类化合物水平在不同治疗方法之间有显著的差异,这表明氧化还原调节.
结论:
- NaHS促进减少细胞环境并维持植物生长,与Asc和H2O2.2引起的氧化应激形成鲜明对比.
- Asc和H2O2治疗引发了不同的应激反应,包括改变的激素水平和酶活动,导致生长抑制.
- 这项研究强调了氧化还原平衡在植物生理学和新陈代谢中的关键作用,并通过战略干预措施提高植物弹性和生产力.
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