Original scientific paper

https://doi.org/10.2478/v10184-012-0024-6

Oxidative stress and antioxidant indices of the marine red alga Porphyra vietnamensis

Navnath M. Pise ; Biological Oceanography Division, National Institute of Oceanography, Council of Scientific and Industrial Research, Dona Paula, Goa 403004, India
Dattatry K. Gaikwad ; Botany Department, Shivaji University, Kolhapur, Maharashtra 416004, India
Tanaji G. Jagtap ; Biological Oceanography Division, National Institute of Oceanography, Council of Scientific and Industrial Research, Dona Paula, Goa 403004, India

Abstract

Oxidative stress and antioxidant defence systems were assessed in a marine red alga Porphyra vietnamensis Tanaka et Pham-Hoang Ho, from India. Lipid peroxidation (LPX) and hydrogen peroxide (H2O2) were measured as oxidative stress markers. Antioxidant defences were measured as catalase (CAT), glutathione S-transferase (GST) and ascorbic acid (AsA), in order to understand their dissimilarity with respect to environmental conditions (pollution levels) from selective locations along the central west coast of India. Levels of LPX, H2O2, CAT and GST were significantly higher in samples collected from Dona Paula than in samples from Malvan and Kunkeshwar, while a lower concentration of AsA was found in samples from Dona Paula. Heavy metals such as Cd, Pb and Hg in higher concentrations in these areas than in other sites were also observed. Variation of oxidative stress indices in response to the accumulation of heavy metals within P. vietnamensis could be used as molecular biomarkers for the assessment and monitoring of environmental quality in ecologically sensitive marine habitats.

Keywords

Porphyra vietnamensis; lipid peroxidation; antioxidant; biomarker; oxidative stress

Hrčak ID:

109639

URI

https://hrcak.srce.hr/109639

Publication date:

10.10.2013.

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