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

Anjum, Shakeel Ahmad, Tanveer, Mohsin, Hussain, Saddam, Shahzad, Babar, Ashraf, Umair, Fahad, Shah, Hassan, Waseem, Jan, Saad, Khan, Imran, Saleem, Muhammad Farrukh, Bajwa, Ali Ahsan, Wang, Longchang, Mahmood, Aqib, Samad, Rana Abdul and Tung, Shahbaz Atta (2016) Osmoregulation and antioxidant production in maize under combined cadmium and arsenic stress. Environmental Science and Pollution Research, 23 12: 11864-11875. doi:10.1007/s11356-016-6382-1

Author Anjum, Shakeel Ahmad
Tanveer, Mohsin
Hussain, Saddam
Shahzad, Babar
Ashraf, Umair
Fahad, Shah
Hassan, Waseem
Jan, Saad
Khan, Imran
Saleem, Muhammad Farrukh
Bajwa, Ali Ahsan
Wang, Longchang
Mahmood, Aqib
Samad, Rana Abdul
Tung, Shahbaz Atta
Title Osmoregulation and antioxidant production in maize under combined cadmium and arsenic stress
Journal name Environmental Science and Pollution Research   Check publisher's open access policy
ISSN 1614-7499
Publication date 2016-06-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s11356-016-6382-1
Open Access Status Not Open Access
Volume 23
Issue 12
Start page 11864
End page 11875
Total pages 12
Place of publication Heidelberg, Germany
Publisher Springer
Language eng
Subject 2304 Environmental Chemistry
2310 Pollution
2307 Health, Toxicology and Mutagenesis
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.
Keyword Antioxidants
Heavy metals
Maize cultivars
Osmolytes accumulation
Reactive oxygen species
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 31271673
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
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