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在 yarrow (Achillea millefolium L.) 植物中减轻盐度压力,通过施用精子胺来减轻盐度压力

Sajedeh Alijani¹, Mohammad-Reza Raji¹, Zohreh Emami Bistgani²

¹Department of Horticulture, College of Agriculture, Lorestan University, Khorramabad, Iran.

|June 26, 2024

概括

精氨酸的应用通过减少电解质泄漏和增强光合作用颜料来减轻 yarrow 植物的盐分压力. 这种聚胺增强了氧化保护剂,并影响了基因表达,有助于植物在盐条件下生存.

科学领域:

植物生理学植物生理学
农业科学农业科学
药用植物学药用植物学

背景情况:

(Achillea millefolium L.) 是一种有价值的药用作物,容易受到盐度压力.
盐应激会对植物生长,生理和生化途径产生负面影响.
众所周知,多氨酸和精氨酸一样,在植物的应激耐受性中起作用.

研究的目的:

为了研究精子胺对受到不同盐度的亚罗植物的缓解作用.
评估精氨酸对生理学参数的影响, osmoprotectant积累,抗氧化酶活性和盐压力 yarrow 的基因表达.

主要方法:

草植物暴露于四种盐度 (NaCl) 度 (0-90 mM) 和三种精氨酸度 (0-3 μM).
测量包括电解质泄漏,光合作用色素含量 (叶绿素a,b,胡卜素),氧化保护剂 (proline,总碳水化合物),抗氧化酶活性 (CAT,POD,APX) 和基因表达 (linalool和pinene合成酶).

主要成果:

盐度增加了电解质泄漏,这种泄漏因精氨酸剂量而有所减少.
在盐水条件下,精氨酸的应用通常会增加素b和胡卜素,而盐水本身就会降低素a.
精子胺协同增强了随着盐度的增加而增加的林和总碳水化合物积累.
在高盐度和精氨酸治疗组合下,林纳醇和平烯合成酶的基因表达最高.

结论:

精子胺有效地减轻了 yarrow 植物中的盐度压力.
保护作用包括维护膜完整性,改善光合作用色素状态,增强 osmoprotectant 水平.
精子胺影响关键基因表达,这表明它在植物对盐应激的适应性反应中发挥了作用.

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