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在三种类物种中,盐应激对生物化学反应的时间变化

Hengameh Homayouni¹, Hooman Razi¹, Mahmoud Izadi¹

¹Department of Plant Production and Genetics, School of Agriculture, Shiraz University, Shiraz 71946-84471, Iran.

Plants (Basel, Switzerland)

|April 13, 2024

概括

像Salicornia这样的类植物使用离子平衡和酸盐积累来达到盐分耐受性. Salicornia persica通过增强的抗氧化活性和更高的糖氨酸,贝他因和蛋白水平,表现出卓越的适应性.

科学领域:

植物生理学植物生理学
生物化学生物化学
生态生态学生态生态学

背景情况:

植物拥有多种不同的生化机制来适应盐水环境.
了解对盐度的时间反应对于阐明半体中压力动力学至关重要.

研究的目的:

评估不同盐度下的三种Salicornia物种中长 shoot生物质和生物化学变量的短期时间变化.
为了确定关键的生化反应,有助于盐分耐受性在Salicornia.

主要方法:

评估的喷射生物质,光合作用色素,离子含量 (Na+,K+,Ca2+,Mg2+),氧化物 (proline,glycine betaine),氧化应激标志物 (H2O2,MDA) 和抗氧化酶活动 (SOD,POD,CAT,APX).
在三次采样中,对S. persica,S. europaea和S. bigelovii进行了非盐酸,中度 (300 mM NaCl) 和高盐度 (500 mM NaCl) 的盐度处理.

主要成果:

在中等盐度下观察到最大的射出生物量.
高Na+积累与保留的K+和Ca2+有助于离子和透平衡.
甘氨酸,贝他因和プロ林的积累在透调整中起到了重要作用.
亚酸盐过氧化酶和过氧化酶活动是抵消氧化应激的关键.
S. persica表现出更高的盐分耐受性,与过氧化酶,糖氨酸,贝他因和蛋白水平的增加有关.

结论:

Salicornia 种类通过离子和透恒温以及氧化应激保护来保持盐分耐受性.
由于增强的生化适应策略,S. persica表现出优越的盐度耐受性.
时间生化分析提供了关于菌体应激反应机制的见解.

关键词:

Salicornia bigeloviiii 这是一种角虫.欧洲角虫 (Salicornia europaea) 是一个这种植物名为 Salicornia persica.亚酸盐过氧化酶的使用方法甘氨酸贝他因的使用方法哈洛菲特 (halophytes) 是一种类型的植物.

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