Summary of Abstract Submission

Abstract Submission No. IO50-03-0006PresentationPoster

OXIDATIVE STRESS TOLERANCE IN INTERTIDAL RED SEAWEED HYPNEA MUSCIFORMIS (WULFEN) IN RELATION TO ENVIRONMENTAL COMPONENTS

Mr.Priya Brata Das*1, Dr.Dusmanta Maharana2, Dr.Xivanand Narayan Verlecar3, Dr.Navnath M Pise1, Dr.Manguesh Gauns1

1 National Institute of Oceanography, India
2 Bejing Normal Unversity, China
3 National Institute of Oceanogrphy, India

ABSTRACT :

Oxidative stress parameters in relation to temperature and other factors have been analysed in Hypnea musciformis, the red seaweed from Anjuna beach, Goa with an aim to understand its susceptibility to changing seasons. The results indicate that elevated temperature, sunshine and dessication during peak summer in May enhanced activity of LPX, H2O2 and antioxidants such as catalase, GSH and ASA. Statistical tests using MANOVA and correlation analysis showed that oxidative stress and antioxidants maintain significant relation with temperature, salinity, sunshine and pH at an individual or interactive level. The dissolved nitrates, phosphates and BOD in ambient waters and the trace metals in seaweeds maintained sufficiently low values to provide any indication that could exert contaminant oxidative stress responses. The present field studies suggest that elevated antioxidant content in H. musciformis offer sufficient relief to sustain against harsh environmental stresses for its colonization in the rocky intertidal zone.