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KMID : 0364820090450040368
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Korean Journal of Microbiology
2009 Volume.45 No. 4 p.368 ~ p.376
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Taxonomical Characterization and Antimicrobial Activity of Red Pigment-Producing Marine Bacterium Strain JE-34
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Kim Ju-Sang
Kim Man-Chul
Harikrishnan Ramasamy
Han Yong-Jae
Heo Moon-Soo
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Abstract
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A red pigment-producing bacterial strain was isolated from sediment sample of the East China Sea. The isolate was identified by analysis based on 16S rDNA sequence and morphological, physiological properties, biochemical characteristics and fatty acid composition. Phylogenetic analysis based on 16S rDNA sequence showed that isolate represent a phyletic lineage within the genus Zooshikella, and this strain was most closely related to Zooshikella ganghwensis KCTC 12044T (AY130994) (99.79%). The strain was Gram-negative, aerobic and required NaCl at 0.5~8.0% for growth. The predominant cellular fatty acids were saturated and monounsaturated straight-chain fatty acids. Consequently, this strain was identified as a member of the genus Zooshikella and designated as Zooshikella sp. JE-34. The pigment showed characteristics similar to prodigiosin, a well-known red pigment previously detected in Serratia marcescens. The antimicrobial activity of Zooshikella sp. JE-34 bacterial pigment was tested against 18 microorganisms, which were fish and human pathogens. The Zooshikella sp. JE-34 red pigment showed high antimicrobial activity against Streptococcus iniae, S. parauberis, S. mutans, Staphylococcus aureus, and Propionibacterium acnes.
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KEYWORD
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antimicrobial activity, bacterial pigment, marine bacteria, prodigiosin, Zooshikella
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