Assessment of oxidative stress indices in a marine macro brown alga Padinatetrastromatica (Hauck) from comparable polluted coastal regions of theArabian Sea, west coast of India
Dusmant Maharana , Karmabeer Jena , Navnath M. Pise , Tanaji G. Jagtap
DOI:
Received October 23, 2009,Revised March 18, 2010, Accepted , Available online
Volume 22,2010,Pages 1413-1417
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Oxidative stress and antioxidant defence systems were assessed in a marine brown alga Padina tetrastromatica, commonly occurring
from the tropics. Lipid peroxidation (LPX) and H2O2 were measured as oxidative stress markers, and antioxidant defences were
measured as catalase (CAT), glutathione S-transferase (GST) and ascorbic acid (AsA), in order to understand their dissimilarity with
respect to pollution levels from selective locations along the central west coast of India. A significant increased levels of LPX, H2O2,
CAT and GST were observed in samples from relatively polluted localities (Colaba and Karwar) when compared to less polluted
locality (Anjuna), while AsA concentration was higher in algal samples from worst polluted region of Colaba. Heavy metals such
as Cd and Pb were also higher in the vicinity of polluted areas compared to reference area. Variation of oxidative stress indices
in response to accumulation of heavy metals within P. tetrastromatica could be used as molecular biomarkers in assessment and
monitoring environmental quality of ecologically sensitive marine habitats.
