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Int J Syst Evol Microbiol 58 (2008), 924-928; DOI  10.1099/ijs.0.65594-0
© 2008 International Union of Microbiological Societies

Micromonospora chaiyaphumensis sp. nov., isolated from Thai soils

Suchada Jongrungruangchok1, Somboon Tanasupawat1 and Takuji Kudo2

1 Department of Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
2 Japan Collection of Microorganisms, RIKEN BioResource Center, Wako, Saitama 351-0198, Japan

Correspondence
Somboon Tanasupawat
Somboon.T{at}chula.ac.th

Three actinomycete strains, MC5-1T, MC7-1 and R1-1, were isolated from soil samples collected in Thailand. Their taxonomic positions were determined using a polyphasic approach. The chemotaxonomic characteristics of these strains coincided with those of the genus Micromonospora, i.e. meso-diaminopimelic acid and N-glycolyl muramic acid were present in the cell-wall peptidoglycan, the whole-cell sugars were of pattern D, the phospholipids were of type II and the cellular fatty acids were of type 3b. Phylogenetic analysis of the 16S rRNA gene sequences revealed a close relationship between strains MC5-1T, MC7-1 and R1-1 (99.8 % sequence similarity) and Micromonospora auratinigra JCM 12357T (99.3 %). The three novel strains were clearly distinguishable from M. auratinigra JCM 12357T from the low DNA–DNA relatedness (≤43.4 %). On the basis of the data presented, strain MC5-1T represents a novel species of the genus Micromonospora, for which the name Micromonospora chaiyaphumensis is proposed. The type strain is MC5-1T (=KCTC 19332T=JCM 12873T=PCU 267T=TISTR 1564T).

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strains MC5-1T, MC7-1, and R1-1 are AB196710, AB196709 and AB196711, respectively.

A maximum-parsimony phylogenetic tree and cellular fatty acid compositions, DNA G+C contents and DNA–DNA relatedness values for strains R1-1, MC5-1T and MC7-1 and related strains are presented as supplementary material available with the online version of this paper.






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Copyright © 2008 by the International Union of Microbiological Societies.