ISSN: 0973-7510

E-ISSN: 2581-690X

Sekelwa Cosa and Anthony I. Okoh
Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, Faculty of Agriculture and Science, University of Fort Hare, Private Bag X1314, Alice, 5700, South Africa.
J Pure Appl Microbiol. 2012;6(3):1111-1118
© The Author(s). 2012
Received: 30/04/2012 | Accepted: 09/06/2012 | Published: 30/09/2012
Abstract

The present study was carried out to assess the culturable actinomycetes diversity of near-shore sediments of Algoa Bay collected at depths ranging from 5.91 to 7.51 m and approximately 500 m distance from shore. Counts of the actinomycetes ranged in the orders 101 to 102 cfu/g using CSPY-ME agar and 102 to 103 cfu/g using M1 agar. A total of 326 actinomycetes isolates belonging to sixteen (16) genera were isolated from sediment samples and includes Actinoplane spp. (4.9%);  Actinopolyspora spp. (3.68%);  Amycolata spp. (0.92%);  Actinosynema spp. (1.53%);  Ampularia spp. (3.37%); Amycolaptosis spp. (2.45%); Catellospora spp. (6.14%); Intrasporangium spp. (3.37%); Kibdellosporium spp. (2.45%); Kitasatospora spp. (2.15%); Micromonospora spp. (7.98%); Norcadia spp. (2.45%); Salinispora spp. (2.15%);  Saccharopolyspora spp. (0.92%); Streptoverticillium spp. (19.33%); and Streptomyces spp. (36.20%).  Depths of collection of sediment samples does not appear to affect the distribution of the actinomycetes genera, but choice of media appears to be a contributing factor to consider in cultivating marine actinomycetes as the M1 agar appears to support actinomycetes growth than CSPY-ME agar. We conclude that Algoa Bay sediment promises to be an important reservoir of marine actinomycetes of potentially biotechnological relevance.

Keywords

Culturable marine actinomycetes, sediment, Algoa Bay

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