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Int J Syst Evol Microbiol 59 (2009), 2453-2457; DOI  10.1099/ijs.0.010652-0
© 2009 International Union of Microbiological Societies

Actinomadura flavalba sp. nov., an endophytic actinomycete isolated from leaves of Maytenus austroyunnanensis

Sheng Qin, Guo-Zhen Zhao, Jie Li, Wen-Yong Zhu, Li-Hua Xu and Wen-Jun Li

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 650091, PR China

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

An actinomycete strain, designated YIM 61435T, was isolated from leaves of Maytenus austroyunnanensis collected from a tropical rainforest in Xishuangbanna, Yunnan Province, south-west China. The isolate produced aerial mycelium with long, curved to hooked spore chains. The chemotaxonomic characteristics of the isolate were consistent with its assignment to the genus Actinomadura. Phylogenetic analysis using 16S rRNA gene sequences also indicated that this strain should be classified in the genus Actinomadura; however, it could be separated clearly from its closest neighbour, Actinomadura atramentaria DSM 43919T. Furthermore, a combination of DNA–DNA hybridization results and significant differences in morphological and physiological characteristics indicate that strain YIM 61435T represents a novel species of the genus Actinomadura, for which the name Actinomadura flavalba sp. nov. is proposed. The type strain is YIM 61435T (=DSM 45200T =CCTCC AA 208017T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 61435T is FJ157185.

An extended neighbour-joining tree based on nearly complete 16S rRNA gene sequences is available as supplementary material with the online version of this paper.






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