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首页> 外文期刊>Journal of Botany >Chromium as an Environmental Pollutant: Insights on Induced Plant Toxicity
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Chromium as an Environmental Pollutant: Insights on Induced Plant Toxicity

机译：铬作为一种环境污染物：诱导植物毒性的见解

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In the past decades the increased use of chromium (Cr) in several anthropogenic activities and consequent contamination of soil and water have become an increasing concern. Cr exists in several oxidation states but the most stable and common forms are Cr(0), Cr(III) and Cr(VI) species. Cr toxicity in plants depends on its valence state. Cr(VI) as being highly mobile is toxic, while Cr(III) as less mobile is less toxic. Cr is taken up by plants through carriers of essential ions such as sulphate. Cr uptake, translocation, and accumulation depend on its speciation, which also conditions its toxicity to plants. Symptoms of Cr toxicity in plants are diverse and include decrease of seed germination, reduction of growth, decrease of yield, inhibition of enzymatic activities, impairment of photosynthesis, nutrient and oxidative imbalances, and mutagenesis.
机译：在过去的几十年中，越来越多的人为活动中使用铬（Cr），从而污染了土壤和水。 Cr以几种氧化态存在，但最稳定，最常见的形式是Cr（0），Cr（III）和Cr（VI）。植物中的铬毒性取决于其价态。 Cr（VI）具有较高的移动性，因此具有毒性，而Cr（III）具有较低的移动性，则具有较低的毒性。植物通过必需离子（例如硫酸盐）的载体吸收铬。铬的吸收，转运和积累取决于其形态，这也决定了其对植物的毒性。植物体内的铬毒性症状多种多样，包括种子发芽减少，生长减少，产量减少，酶活性抑制，光合作用受损，营养和氧化失衡以及诱变。

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