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Int J Syst Evol Microbiol 59 (2009), 517-520; DOI  10.1099/ijs.0.001479-0
© 2009 International Union of Microbiological Societies

Actinomadura miaoliensis sp. nov., a thermotolerant polyester-degrading actinomycete

M. Tseng1, S.-F. Yang1, K.-C. Hoang2, H.-C. Liao1, G.-F. Yuan1 and C.-C. Liao1

1 Bio-resource Collection and Research Center, Food Industry Research and Development Institute, HsinChu, 30052, Taiwan, ROC
2 Department of Chemical and Material Engineering, Ta-Hwa Institute of Technology, 1, Ta-Hwa Road, Chiung-Lin, Hsinchu 30743, Taiwan, ROC

Correspondence
M. Tseng
tjm{at}firdi.org.tw

An actinomycete, strain BC 44T-5T, with the ability to degrade poly(D-3-hydroxybutyrate) was isolated from a soil sample collected from Miaoli County, Taiwan. The isolate displayed substrate mycelia and short spore chains were borne on the aerial mycelia. Spores were non-motile, round, 1 µm in diameter and spiny. The aerial spore mass was blue. Strain BC 44T-5T had meso-diaminopimelic acid as the diagnostic diamino acid of the cell-wall peptidoglycan. Whole-cell sugars of the novel strain were identified as glucose, galactose and madurose. Diphosphatidylglycerol and phosphatidylinositol were detected. The predominant menaquinones were MK-9(H4) and MK-9(H2). Mycolic acids were not detected. Major cellular fatty acids were iso-C16 : 0 (14.82 %), C16 : 0 (14.63 %), C17 : 0 (13.79 %) and 10-methyl-C17 : 0 (23.77 %.) The DNA G+C content of strain BC 44T-5T was 70.6 mol%. On the basis of phenotypic and genotypic data, it is proposed that strain BC 44T-5T (=FIRDI 002T=BCRC 16873T=LMG 24335T) should be classified as the type strain of a novel species of the genus Actinomadura, Actinomadura miaoliensis sp. nov.

Abbreviations: meso-A2pm, meso-diaminopimelic acid

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain BC 44T-5T is EF116925.






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