对生长和生理状态产生负面影响,并对化玉米 (Zea mays L.) 中外源的缓解效应产生负面影响

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Updated: Jul 2, 2025

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

Published on: July 13, 2016

Weihuan Jin¹, Lan Cheng¹, Chunyan Liu¹

¹College of Life Sciences, Henan Agricultural University, Zhengzhou, 450046, China.

Environmental science and pollution research international

|February 23, 2024

概括

污染会损害灌玉米的生长和光合作用. 然而,植物可以容忍一些,的应用显著降低了玉米中的含量.

科学领域:

环境科学环境科学
植物生理学植物生理学
农业科学农业科学

背景情况:

土壤 (Cd) 污染对食品安全和人类健康构成重大风险.
对于农业的可持续性来说,的吸收和灌玉米等作物中的毒性是关键问题.

研究的目的:

调查外源 (Cd) 对灌玉米生长和生理反应的影响.
评估 (Se) 在缓解Cd毒性和堆积在化玉米中的潜力.

主要方法:

通过使用不同度的Cd (580μM) 进行了水培实验.
测量包括根形态 (总根长度,表面积,体积,尖端数,分枝数),生物质积累,光合作用,叶绿素含量和抗氧化酶活动 (CAT,POD,SOD,APX).
评估了 (Se) 应用对芽和根中的Cd度的影响.

主要成果:

增加Cd度显著抑制了灌玉米的根部发育,生物质积累,光合作用和叶绿素含量.
暴露激活了脂质过氧化和抗氧化酶CAT和POD,同时降低了根中的SOD和APX活性.
在高Cd应力 (Cd50) 条件下,的应用显著降低了Cd度,无论是芽 (27.1%) 还是根 (35.1%).

结论:

外源对化玉米的生长和光合作用效率产生负面影响.
化玉米通过增强的抗氧化剂系统和增加的 Askorbate 和 Glutathione 水平,对 Cd 具有一定耐受性.
的应用是减少在化玉米中的积累的有希望的策略,从而提高食品安全.

关键词:

抗氧化能力抗氧化能力是的组成部分.光合作用参数光合作用参数是一种.料玉米是一种料玉米.

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