Chloroplast antioxidant reactions associated with zinc-alleviating effects on iron toxicity in wheat seedlings.

IF 2.1 4区生物学 Q2 PLANT SCIENCES

Photosynthetica Pub Date : 2024-12-05 eCollection Date: 2024-01-01 DOI:10.32615/ps.2024.038

Y L Xu, J Y Guo, Z Zhang, R R Ma, H Ma, Y Zhang, Y L Yang

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Abstract

This study aimed to explore the mechanism by which Zn retards Fe toxicity by analyzing the morphological, photosynthetic, and chloroplast physiological parameters of wheat seedlings treated with either single or combined Zn and Fe. Different behavior of the seedlings was observed under untreated and treated conditions. The most discriminating quantitative traits were associated with leaf area, biomass dry mass and fresh mass, net photosynthetic rate, intercellular CO₂ concentration, stomatal conductance, transpiration rate of seedlings, Hill reaction, Mg²⁺-ATPase and Ca²⁺-ATPase activities, malondialdehyde and O₂ ^·- contents, and glutathione reductase, ascorbate peroxidase, peroxidase, and superoxide dismutase activities and their gene expression in the seedling chloroplast. The obtained findings suggest the important function of an appropriate Zn concentration in preventing Fe toxicity. Therefore, a thorough evaluation of the effects of Zn on Fe-stressed plant growth is beneficial for sustainable agriculture.

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叶绿体抗氧化反应与锌对小麦幼苗铁毒性的缓解作用有关。

本研究旨在通过分析锌和铁单独或联合处理小麦幼苗的形态、光合和叶绿体生理参数，探讨锌延缓铁毒性的机制。在未处理和处理的条件下，观察了幼苗的不同行为。叶片面积、生物量干质量和鲜质量、净光合速率、胞间CO2浓度、气孔导度、幼苗蒸腾速率、Hill反应、Mg2+- atp酶和Ca2+- atp酶活性、丙二醛和O2·-含量、谷胱甘肽还原酶、抗坏血酸过氧化物酶、过氧化物酶和超氧化物歧化酶活性及其在幼苗叶绿体中的基因表达与最具鉴别性的数量性状相关。研究结果表明，适当的锌浓度对防止铁中毒具有重要作用。因此，全面评价锌对铁胁迫下植物生长的影响，有利于农业可持续发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photosynthetica 生物-植物科学

CiteScore

5.60

自引率

7.40%

发文量

审稿时长

3.8 months

期刊介绍： Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side. The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.