Journal of Stress Physiology & Biochemistry, Vol. 10 No. 2 2014, pp. 190-199 ISSN 1997-0838
Original Text Copyright (cc) 2014 by  Al Maqtari and Nagi



ORIGINAL ARTICLE
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Screening of Salt-stress, Antioxidant Enzyme, and Antimicrobial Activity of Leave extracts of Mangroves Avicennia marina L. from Hodaidah, Yemen

Maher A. Al Maqtari*1, Hisham M. Nagi2

1 Department of Chemistry, Faculty of Science, Sana’a University
2 Department of Earth and Environmental Sciences, Faculty of Science, Sana’a University

*E-Mail: proteinase_613@hotmail.com

Received January 31, 2014


In the present study the salinity stress, antioxidant enzyme and antimicrobial activities of leaf extract of Avicennia marinawere investigated. As visualized from SDS-PAGE, no differences was found in number of protein band, but the intensities of several protein bands having apparent molecular mass by reduced severely in salt treated samples with enhanced activities of CAT, POX and GPX. Escherichia coli (ATCC8739), Staphylococus aureus (ATCC 6538), and Bacillus subtilis (ATCC6633) and fungus (Candida albicans ATCC 2091, and Aspergillus niger ATCC 16404) were used as the test pathogenic bacteria and fungi, respectively in this study. The Avicennia marina extract possessed antibacterial activity against E. coli, S. aureus, and B. subtilis (12, 6, and 7 mm respectively), with antifungal activity against C. albicans and A. niger (9 and 10 mm).

Key words:   Salinity, Antioxidant enzymes, Antimicrobial effect, Mangrove, Avicennia marina

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