Cadmium resistant actinomycetes isolated from agricultural fields

ISSN: 0973-7510

E-ISSN: 2581-690X

Syed G. Dastager^1-3, Wen-Jun Li^2, Dayanand Agasar^3, Jae-Chan Lee^1, Dong-Jin Park¹ and Chang-Jin Kim¹

¹Korea Research Institute of Bioscience and Biotechnology (KRIBB)-Daejeon – 305 333, Korea.

²Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan – 650 091, India.

³Department of Studies and Research in Microbiology, Gulbarga University, Gulbarga – 585 106, India.

J Pure Appl Microbiol. 2008;2(1):11-18

Received: 21/11/2007 | Accepted: 27/12/2007 | Published: 30/04/2008

Abstract

Two actinomycetes strains designated as DAS 131 and DAS 165, were isolated from cadmium contaminated agricultural soil of Gulbarga, Karnataka. The isolates were classified as Streptomyces spp. A plate diffusion assays showed to be resistant to cadmium [Cd (No₃)₂]. This method allowed a qualitative screen of the effects of metal on growth, on sporulation and in some cases, on secondary metabolic production. The strains have the best growth capacity in presence of 100mM Cdl^-1 which is representative of their ability to soil colonization.

Keywords

Streptomyces, bioremediation, metal resistance

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