Hydrogen sulphide ameliorates hexavalent chromium toxicity in two cereal crops: Role of antioxidant enzymes and proline metabolism

IF 3.6 3区生物学 Q1 PLANT SCIENCES

Plant Biology Pub Date : 2022-04-06 DOI:10.1111/plb.13413

S. K. Singh, T. Husain, M. Suhel, S. M. Prasad, V. P. Singh

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引用次数: 3

Abstract

Chromium pollution in soils is a major threat as it reduces crop yields. Hence, researchers seek methods/strategies which could curtail such losses.
We report the role of H₂S in alleviating hexavalent chromium [Cr(VI)] stress in two cereals crops, i.e. wheat and rice seedlings, by estimating various physiological attributes.
Cr(VI) reduced shoot and root length in both cereals through increased accumulation of Cr(VI) in root tips and increased in oxidative stress markers, i.e. superoxide radicals (SOR), H₂O₂ and lipid peroxidation (as MDA equivalent). Supplementation with H₂S alleviated Cr(VI) toxicity in both cereal crops.
Application of H₂S increased tolerance to Cr(VI) stress by protecting photosynthesis and enhancing activity of antioxidant enzymes, particularly glutathione-S-transferase and content of proline. Rice was more resistant to Cr(VI) than wheat seedlings.

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硫化氢改善两种谷物六价铬毒性:抗氧化酶和脯氨酸代谢的作用

土壤中的铬污染是一个主要威胁，因为它降低了作物产量。因此，研究人员寻求可以减少这种损失的方法/策略。我们报告了H2S在缓解两种谷物作物(即小麦和水稻幼苗)六价铬胁迫中的作用，通过估计各种生理属性。Cr(VI)通过增加Cr(VI)在根尖的积累，减少了两种谷物的茎长和根长，并增加了氧化胁迫标志物，即超氧自由基(SOR)、H2O2和脂质过氧化(作为MDA当量)。添加H2S可减轻两种谷物的Cr(VI)毒性。H2S通过保护光合作用和提高抗氧化酶活性，特别是谷胱甘肽- s -转移酶活性和脯氨酸含量，提高了植物对Cr(VI)胁迫的耐受性。水稻幼苗对Cr(VI)的抗性强于小麦幼苗。

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来源期刊

Plant Biology 生物-植物科学

CiteScore

8.20

自引率

2.60%

发文量

109

审稿时长

3 months

期刊介绍： Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.