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Int J Syst Evol Microbiol 59 (2009), 2527-2533; DOI  10.1099/ijs.0.010793-0
© 2009 International Union of Microbiological Societies

Plantactinospora mayteni gen. nov., sp. nov., a member of the family Micromonosporaceae

Sheng Qin1, Jie Li1, Yu-Qin Zhang1,2, Wen-Yong Zhu1, Guo-Zhen Zhao1, Li-Hua Xu1 and Wen-Jun Li1

1 The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China
2 Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn or
liact{at}hotmail.com

A novel Gram-positive, aerobic, spore-forming, endophytic actinomycete, designated strain YIM 61359T, was isolated from the roots of Maytenus austroyunnanensis plants collected from tropical rainforest in Xishuangbanna, Yunnan Province, south-west China. The strain formed single or cluster spores with smooth surfaces from substrate mycelia. The strain contained meso-diaminopimelic acid in the cell wall and arabinose, xylose, galactose and glucose in whole-cell hydrolysates. The acyl type of the cell-wall polysaccharides was glycolyl. MK-10(H6), MK-10(H8) and MK-10(H4) were the predominant menaquinones. The polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylinositol and several unknown phospholipids. The major fatty acids were iso-C15 : 0, anteiso-C15 : 0, C17 : 0, anteiso-C17 : 0 and iso-C16 : 0. The DNA G+C content of strain YIM 61359T was 69.7 mol%. These chemotaxonomic data indicated that the strain belongs to the family Micromonosporaceae. Phylogenetic analysis based on 16S rRNA gene sequences also suggested that strain YIM 61359T fell within the family Micromonosporaceae. On the basis of morphological and chemotaxonomic data, phylogenetic analysis and characteristic patterns of 16S rRNA gene signature nucleotides, strain YIM 61359T is considered to represent a novel species of a new genus within the family Micromonosporaceae, for which the name Plantactinospora mayteni gen. nov., sp. nov. is proposed. The type strain of Plantactinospora mayteni is YIM 61359T (=CCTCC AA 208022T=DSM 45238T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 61359T is FJ214343.

A table comparing 16S rRNA gene signature nucleotide positions of strain YIM 61359T and related genera is available with the online version of this paper.






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