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Impact of Arsenic Toxicity on Black Gram and Its Amelioration Using Phosphate

機(jī)譯：砷對(duì)黑膠的毒性及其磷化改良作用

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摘要

The toxicity of arsenic in soil and ground water is one of the most important environmental problems particularly in South-East Asia. Arsenic-polluted irrigation water creates hazard in soil environment and also in crop quality. In the present study, response of black gram (Vigna mungo L.) to arsenic with or without phosphate application was investigated. Arsenic-treated plants showed reduction in their growth and pigment content. Arsenic significantly enhanced lipid peroxidation, electrolyte leakage, and level of proline showing oxidative stress. Arsenic toxicity was associated with an increase in the activities of antioxidative enzymes like superoxide dismutase, peroxidase, and ascorbate peroxidase whereas catalase activity decreased at higher arsenic dose. Joint application of phosphate with arsenic resulted in significant alterations in most of the parameters tested under the purview of arsenic treatment alone which lead to better growth in black gram.
機(jī)譯：砷在土壤和地下水中的毒性是最重要的環(huán)境問(wèn)題之一，尤其是在東南亞。砷污染的灌溉水對(duì)土壤環(huán)境和農(nóng)作物質(zhì)量均構(gòu)成危害。在本研究中，研究了黑克（Vigna mungo L.）對(duì)有磷或無(wú)磷施用對(duì)砷的反應(yīng)。砷處理過(guò)的植物的生長(zhǎng)和色素含量降低。砷顯著增強(qiáng)了脂質(zhì)過(guò)氧化，電解質(zhì)滲漏和脯氨酸水平，顯示出氧化應(yīng)激。砷毒性與抗氧化酶（如超氧化物歧化酶，過(guò)氧化物酶和抗壞血酸過(guò)氧化物酶）活性的增加有關(guān)，而過(guò)氧化氫酶活性在較高的砷劑量下降低。磷酸鹽與砷的聯(lián)合施用導(dǎo)致在單獨(dú)進(jìn)行砷處理的范圍內(nèi)測(cè)試的大多數(shù)參數(shù)發(fā)生顯著變化，從而導(dǎo)致黑克更好的生長(zhǎng)。

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