数字农科院2.0

Enhancing The Lead Phytostabilization In W.etland Plant Juncus Effusus L . Through Somaclonal Manipulation And Edta Enrichment

文献类型： 外文期刊

作者： Najeeb, Ullah;Najeeb, Ullah;Malik, Zaffar;Zhou, Weijun;Zia, Munir Hussain;Ahmad, Waqar;Najeeb, Ullah;Najeeb, Ullah

作者机构：

关键词： Mat rush; Chlorophyll; Somaclonal variants; Phytostabilization; Antioxidative enzymes; Oxidative stress

期刊名称： ARABIAN JOURNAL OF CHEMISTRY

ISSN： 1878-5352

年卷期： 2017 年 10 卷

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摘要： We investigated the role of ethylene diamine tetra-acetic acid (EDTA) and somaclonal manipulation on improving lead (Pb) phytostabilization in mat rush (Juncus effusus L.). Seedlings were raised from seeds and callus to study variations in Pb uptake and tolerance. The seedlings were treated with 0.5 and 1.0 mM Pb as alone, and each with 2.5 and 5.0 mM of EDTA. Plants grown from both sources accumulated relatively larger Pb contents in their root tissues that were further enhanced by EDTA supplementation in the hydroponics medium. The tendency of storing higher Pb contents in roots compared to shoots in J. effusus was also evident from lower translocation factor (TF) value that facilitated the plants to avoid from Pb-induced shoot injury. Callus grown plants were more responsive to EDTA amendment showing improved growth, Pb uptake and chlorophyll contents under Pb stress. Both kinds of J. effusus plants tolerated Pb toxicity by modifying antioxidative enzyme activities. Enrichment of Pb-treated media with EDTA further elevated enzymic activities of plant roots contributing to defy Pb-induced oxidative burst. Thus, plant improvement through somaclonal manipulation in J. effusus along with EDTA enrichment could be an appropriate technique for phytostabilization of Pb-contaminated environments. (C) 2014 King Saud University. Production and hosting by Elsevier B.V.

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