外源性谷氨和氧化改善了玉米中浸水压力耐受性
Prodipto Bishnu Angon1, Md Tahjib-Ul-Arif1,2, Md Sarwar Jahan1
1Applied Plant Biology and Bioinformatics Lab, Department of Biochemistry and Molecular Biology Bangladesh Agricultural University Mymensingh Bangladesh.
Plant-environment interactions (Hoboken, N.J.)
|March 9, 2026
概括
谷氨 (GSH) 和氧化 (NO) 的外部应用显著改善了玉米植物的浸水耐受性 (WL). GSH + NO治疗增强了生长,生物量和代谢适应性,同时减少了氧化损伤,显示出作物弹性有前景.
科学领域:
- 植物生理学 植物生理学
- 农业科学 农业科学
- 压力生物学 压力生物学
背景情况:
- 玉米 (Zea mays L.) 是一种重要的全球粮食作物,容易受到水浸压 (WL) 的压力.
- 谷氨 (GSH) 和氧化 (NO) 已被认为是它们对非生物应激的保护作用.
- 在提高玉米中WL耐受性的GSH和NO的有效性尚未得到充分证实.
研究的目的:
- 调查外源GSH和NO对受WL压力的玉米植物的影响.
- 为了确定是否结合GSH和NO的应用提供了对WL诱导的损伤的优越保护.
- 在WL条件下阐明与GSH和NO治疗相关的生理和代谢变化.
主要方法:
- 玉米幼苗遭受了水浸压力.
- 外源性谷氨 (GSH) 和氧化 (NO) 单独和组合使用.
- 评估了植物生长参数,生物质,光合作用颜料,代谢指标 (proline,可溶糖,蛋白质) 和氧化应激标志物 (MDA,H2O2).
- 测量了与氧化应激缓解相关的酶活性.
主要成果:
- 与未经处理的对照组相比,GSH + NO处理显著改善了浸水玉米的生长和生物质生产.
- 经过处理的植物表现出增强的根和芽重量,增加的叶绿素和胡卜素含量,以及高水平的林,可溶性糖和总蛋白质.
- 氧化损伤标志物,甲 (MDA) 和过氧化 (H2O2),通过GSH和NO治疗显著减少.
- 过氧化酶活性, Askorbic 酸和安东素含量增加,表明抗氧化剂防御增强.
结论:
- 外源的GSH和NO,单独和组合,有效地增强玉米苗的适应机制,以应对水浸压力.
- 在GSH + NO的协同应用中,显示了减轻WL诱导的损害和提高作物绩效的巨大潜力.
- 需要进一步的实地研究来验证GSH + NO在玉米种植中应对浸水压力的实际应用.
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