| Literature DB >> 26748375 |
Hafiz Muhammad Tauqeer1, Shafaqat Ali2, Muhammad Rizwan3, Qasim Ali4, Rashid Saeed1, Usman Iftikhar2, Rehan Ahmad2, Mujahid Farid1, Ghulam Hassan Abbasi5.
Abstract
The present study was aimed to evaluate the morphological, physiological and biochemical responses of Alternanthera Bettzickiana (Regel) G. Nicholson plant subjected to different levels of cadmium (Cd) and lead (Pb) (0, 0.5, 1.0 and 2.0 mM) stress. A. bettzickiana was able to accumulate Cd and Pb in different plant parts and total uptake of both metals was higher in shoots than roots. Plant growth, biomass and photosynthetic pigments increased with increasing metal concentrations, up to 1.0 mM, in soil and then decreased with higher metal levels. The activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) increased under lower metal levels (0.5 and 1.0 mM) while decreased at higher metal levels (2.0 mM). Leaf and root electrolyte leakage (EL), malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents decreased at lower metal levels (≤1.0 mM) while increased at higher levels. The present study clearly signifies the potential of A. bettzickiana plant towards Cd and Pb tolerance and accumulation especially at lower metal levels.Entities:
Keywords: Antioxidants; Heavy metal; Oxidative stress; Phytoremediation; Tolerance
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Year: 2015 PMID： 26748375 DOI： 10.1016/j.ecoenv.2015.12.031
Source DB: PubMed Journal: Ecotoxicol Environ Saf ISSN： 0147-6513 Impact factor: 6.291