Isolation and Characterization of Streptomyces spp. from Soils

Tan, G.Y. and Ho, C.Y. and Tan, E.L. and Thong, Kwai Lin (2001) Isolation and Characterization of Streptomyces spp. from Soils. Asia Pacific Journal of Molecular Biology and Biotechnology, 9 (2). pp. 139-142. ISSN 0128-7451

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Abstract

The isolation of forty-eight strains of actinomycetes from eight soil samples was done with the conventional dilution plate method on Humic acid-vitamin agar (HVA), Starch Casein agar and Sorenson's agar. HVA was found to be the best isolation medium as more strains of actinomycete could be isolated. Based on the aerial mycelium colour scheme, three colour groups were recognised. Representative isolates from each colour group were subjected to macrorestriction analysis with the pulsed-field gel electrophoresis (PFGE). The different coloured strains exhibited low levels of similarity (Dice coefficient, F<0.50). Acetone extracts of the isolates were screened on mutant yeasts for Mitogen-Activated Protein Kinase (MAPK) Kinase and MAPK Phosphatase inhibitor to find an indirect inhibitor of ras. However, no inhibitor was found but seven isolates exhibited toxic effect towards the yeasts. PFGE analysis of these isolates showed that two of isolates were identical. From the phenotypic and genotypic characteristics, the two isolates were shown to be of the same strain

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QR Microbiology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: miss munirah saadom
Date Deposited: 17 Jan 2013 16:01
Last Modified: 11 Feb 2019 07:47
URI: http://eprints.um.edu.my/id/eprint/5570

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