干旱压力在Andrographis paniculata:影响生理参数和andrographolide含量,由生长阶段介导
Pritee Singh1, V Keshava Rao1, R H Laxman1
1Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Hessarghatta Lake Post, Bengaluru 560089, Karnataka, India.
Functional plant biology : FPB
|October 24, 2025
概括
在Andrographis paniculata (kalmegh) 中,水应激增加了植物和开花阶段的生物活性化合物,但降低了植物健康. 最佳的灌和收获是最大限度地提高药用化合物产量的关键.
科学领域:
- 植物化学 植物化学
- 植物生理学 植物生理学
- 农业科学 农业科学
背景情况:
- 安德罗格拉菲斯·帕尼库拉塔 (Andrographis paniculata) 是一种富含二甲化合物的药用植物.
- 水压力是影响植物生长和二次代谢产生的重要环境因素.
研究的目的:
- 调查不同生长阶段的水压对Andrographis paniculata中四种关键的二类化合物的积累的影响.
- 为了确定水应激,生理参数和生物活性化合物含量之间的关系.
主要方法:
- 在盆栽中种植的Andrographis paniculata植物在植物,开花和结果阶段受到水压.
- 分析了四种双类化合物 (andrographolide,14-deoxyandrographolide,neoandrographolide和andrograpanin) 的分析.
- 测量生理参数,包括干重量,相对含水量 (RWC),光合作用,导电性和透气.
主要成果:
- 在6天以上后,植物和开花阶段的水应力显著增加了andrographolide总含量 (高达44%),而果实阶段没有显著变化.
- 干重,RWC,光合作用,导电和透气在所有压力阶段都显著下降.
- 总andrographolide含量与干重量,RWC和光合作用速率有负相关.
结论:
- 开花和结果的阶段对干旱压力最敏感.
- 水压可以增强Andrographis paniculata的生物活性化合物积累,特别是在早期的生长阶段.
- 研究结果支持优化灌和收获,以最大限度地提高药用化合物的产量,并开发耐压力的品种.
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