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Int J Syst Evol Microbiol 58 (2008), 1324-1331; DOI  10.1099/ijs.0.65211-0
© 2008 International Union of Microbiological Societies

A new member of the family Micromonosporaceae, Planosporangium flavigriseum gen. nov., sp. nov.

Jutta Wiese1, Yi Jiang1,2, Shu-Kun Tang2, Vera Thiel1, Rolf Schmaljohann1, Li-Hua Xu2, Cheng-Lin Jiang2 and Johannes F. Imhoff1

1 Leibniz-Institut für Meereswissenschaften, IFM-GEOMAR, Düsternbrooker Weg 20, D-24105 Kiel, Germany
2 Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China

Correspondence
Johannes F. Imhoff
jimhoff{at}ifm-geomar.de
Li-Hua Xu
lihxu{at}ynu.edu.cn

A novel actinomycete, designated strain YIM 46034T, was isolated from an evergreen broadleaved forest at Menghai, in southern Yunnan Province, China. Phenotypic characterization and 16S rRNA gene sequence analysis indicated that the strain belonged to the family Micromonosporaceae. Strain YIM 46034T showed more than 3 % 16S rRNA gene sequence divergence from recognized species of genera in the family Micromonosporaceae. Characteristic features of strain YIM 46034T were the production of two types of spores, namely motile spores, which were formed in sporangia produced on substrate mycelia, and single globose spores, which were observed on short sporophores of the substrate mycelia. The cell wall contained meso-diaminopimelic acid, glycine, arabinose and xylose, which are characteristic components of cell-wall chemotype II of actinomycetes. Phosphatidylethanolamine was the major phospholipid (phospholipid type II). Based on morphological, chemotaxonomic, phenotypic and genetic characteristics, strain YIM 46034T is considered to represent a novel species of a new genus in the family Micromonosporaceae, for which the name Planosporangium flavigriseum gen. nov., sp. nov. is proposed. The type strain of Planosporangium flavigriseum is YIM 46034T (=CCTCC AA 205013T =DSM 44991T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 46034T is AM232832.

Scanning electron micrographs of cells of strain YIM 46034T grown on GYM agar are available as supplementary material with the online version of this paper.






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