Diversity and Antimicrobial Potential of Actinobacteria from Salt Pan Environment

S. Deepa¹, A. Panneerselvam^1*, D. Dhanasekaran, ² N. Thajuddin² and R.Vijayakumar³

¹ P.G. and Research Department of Botany and Microbiology,  A.V.V.M. Sri Pushpam    College, (Autonomous), Poondi, 613 503 Thanjavur District, Tamil Nadu, India.

² Department of Microbiology, School of Life Sciences, Bharathidasan University, Tiruchirapalli, 620024, Tamilnadu, India.

³Department of Microbiology, Bharathidasan University constituted College, Oruthanadu,Tamilnadu, India.

Corresponding author E-mail: panneer_1959@yahoo.com

Accepted 06 August, 2012

Abstract

The marine environment is an untapped source for many useful drugs and an assessment of this potential is imperative. The salt pan is an unexplored area with unique ecological niches and rich in biodiversity. Totally 16 actinobacteria strains were isolated from salt pan region of Vedharanyam, Nagapattinam District, Tamil Nadu. The isolates were identified as Actinobispora sp., Actinobispora yunnanesis, Dactylosporangium sp., Jonesia sp., Micromonospora sp., Nocardia sp., Nocardioides sp., Saccharomonospora sp., Saccharopolyspora sp., Streptomyces albus, S. cyaneus, S. exfoliatus, S. griseoflavus, Streptoverticillium sp., S. baldaccii, Tetrrabacter sp.All the isolates were tested against two human pathogenic bacteria and two fungal pathogenic organisms. Streptomyces griseoflavus was showed maximum level of inhibition zone towards the Staphylococcus aureus, Klebsiella pneumoniae,Aspertgillus niger and Fusarium moniliforme.The potent antimicrobial compound producing Actinobacteria is characterized and identified as Streptomyces sp. SDAP101  (GQ408915) by 16S rRNA gene analysis.

Keywords: Antimicrobial potential, Actionbacteria, Salt pan Environment.