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Int J Syst Evol Microbiol 59 (2009), 2624-2628; DOI  10.1099/ijs.0.009357-0
© 2009 International Union of Microbiological Societies

Streptomyces avicenniae sp. nov., a novel actinomycete isolated from the rhizosphere of the mangrove plant Avicennia mariana

Jing Xiao1, Yin Wang1, Yingxue Luo1, Shu-Jie Xie1, Ji-Sheng Ruan1 and Jun Xu1,2

1 Key Laboratory of Marine Biogenetic Resources, The Third Institute of Oceanography SOA, Xiamen, Fujian, 361005, PR China
2 School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, PR China

Correspondence
Jun Xu
xu.junn{at}gmail.com

A novel isolate, designated strain MCCC 1A01535T, belonging to the genus Streptomyces was isolated from the rhizosphere of the mangrove plant Avicennia mariana from Fujian Province, south China. Characterization of the isolate was based on a polyphasic approach. Pairwise comparison of 16S rRNA gene sequences revealed that strain MCCC 1A01535T shared 97.7 and 97.5 % sequence similarities to Streptomyces specialis GW41-1564T and Streptomyces hainanensis YIM47672T, respectively, its most closely related neighbours, whereas the DNA–DNA relatedness value between strains MCCC 1A01535T and GW41-1564T was 50.2 %. The major fatty acids of strain MCCC 1A01535T were iso-C16 : 0, C16 : 0 and anteiso-C15 : 0. These differed from the fatty acid compositions of related strains. Strain MCCC 1A01535T exhibited an unusual menaquinone system that comprised MK-10(H6) as the predominant component and moderate amounts of MK-9(H6), MK-9(H8) and MK-10(H8); minor amounts of MK-9(H4), MK-10(H4), MK-9(H10) and MK-10(H10) were also present. Based on its chemotaxonomic, phenotypic and genotypic characteristics, strain MCCC 1A01535T is considered to represent a novel species of the genus Streptomyces, for which the name Streptomyces avicenniae sp. nov. is proposed. The type strain is MCCC 1A01535T (=DSM 41943T=CGMCC 4.5510T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain MCCC 1A01535T is EU399234.

Tables showing major quinone and major fatty acid compositions are available as supplementary material with the online version of this paper.






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