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在Cd应力下,不同品种的积,亚细胞分布和与微量金属 (Cu, Zn, Fe, Mn) 的相互作用

Palanisamy Vasudhevan^1,2, Aparna Suresh³, Subhav Singh^4,5

¹State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, People's Republic of China. vasudhevanbc@gmail.com.

Environmental geochemistry and health

|March 24, 2025

概括

开发低 (Cd) 积累大米至关重要. 白色Ponni大米显示较高的Cd耐受性比IR-50,积累较少的Cd和减轻压力影响.

科学领域:

农业科学农业科学
环境科学环境科学
植物生物学植物生物学

背景情况:

米 (Oryza sativa L.) 是一种主食,也是 (Cd) 的重要蓄积物.
米中Cd污染对健康构成风险,需要开发低Cd积累品种.
了解Cd的积累和分布是减轻其影响的关键.

研究的目的:

为了检查高Cd (IR-50) 和低Cd (白色Ponni) 米品种中的积和亚细胞分布.
为了比较不同品种在Cd压力下的生理反应和耐受机制.
为了食品安全,确定降低Cd吸收的米品种.

主要方法:

米品种 (IR-50和白色Ponni) 的水培栽培,Cd度不同.
测量植物生长参数 (高度,生物量) 和Cd度在根和芽中.
分析亚细胞Cd分布,铁 (Fe) 度和抗氧化酶活动 (POD,CAT,SOD).

主要成果:

在两种品种中,Cd暴露显著降低了植物的高度和生物量.
与白马相比,IR-50在根和芽中积累了较高的Cd水平.
转位因子 (TF) <1表明Cd从根部向芽部的移动有限;Cd定位在根部/芽部组织中.
抗氧化酶活动 (POD,CAT,SOD) 在两种品种中都在应对Cd压力时增加.

结论:

白色Ponni大米表现出比IR-50更高的Cd耐受性.
由于积累和分布更高,IR-50更容易受到Cd应力的影响.
开发像白色马这样的低Cd积累品种对于食品安全和健康至关重要.

关键词:

积累积累是一种积累.抗氧化酶酶是一种抗氧化酶.是的组成部分.在IR-50和IR-50之间.亚细胞分布亚细胞分布这就是为什么WPWP是WPWP.

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