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Osmoregulation and antioxidant production in maize under combined cadmium and arsenic stress

Citation

Anjum, SA and Tanveer, M and Hussain, S and Shahzah, B and Ashraf, U and Fahad, S and Hassan, W and Jan, S and Khan, I and Saleem, MF and Bajwa, AA and Wang, L and Mahmood, A and Samad, RA and Tung, SA, Osmoregulation and antioxidant production in maize under combined cadmium and arsenic stress, Environmental Science and Pollution Research, 23, (12) pp. 11864-11876. ISSN 1614-7499 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 Springer-Verlag Berlin Heidelberg

DOI: doi:10.1007/s11356-016-6382-1

Abstract

An investigation was carried out to examine the combined and individual effects of cadmium (Cd) and arsenic (As) stress on osmolyte accumulation, antioxidant activities, and reactive oxygen species (ROS) production at different growth stages (45, 60, 75, 90 days after sowing (DAS)) of two maize cultivars viz., Dong Dan 80 and Run Nong 35. The Cd (100 μM) and As (200 μM) were applied separately as well as in combination (Cd + As) at 30 DAS. Results revealed pronounced variations in the behavior of antioxidants, osmolytes, and ROS in both maize cultivars under the influence of Cd and As stress. Activities of enzymatic (SOD, POD, CAT and APX, GPX, GR) and non-enzymatic (GSH and AsA) antioxidants, generation of ROS, and accumulation of osmolytes were enhanced with the passage of time; therefore, the maximum values for these attributes were observed at 90 DAS for both cultivars. Exposure of plants to Cd or As stress considerably enhanced the antioxidant activities, ROS, and osmolyte accumulation compared with control, while combined application of Cd + As was more devastating in reducing plant biomass of both maize cultivars. Among cultivars, Dong Dan 80 was better able to negate the heavy metal-induced oxidative damage, which was associated with higher antioxidant activities, greater osmolytes accumulation, and lower ROS production in this cultivar.

Item Details

Item Type:Refereed Article
Keywords:antioxidants, heavy metals, maize cultivars, osmolytes accumulation, reactive oxygen species
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Pathology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other Plant Production and Plant Primary Products
Objective Field:Plant Production and Plant Primary Products not elsewhere classified
Author:Tanveer, M (Mr Mohsin Tanveer)
ID Code:117703
Year Published:2016
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2017-06-26
Last Modified:2017-08-23
Downloads:0

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