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Int J Syst Evol Microbiol 59 (2009), 222-228; DOI  10.1099/ijs.0.001982-0
© 2009 International Union of Microbiological Societies

Sciscionella marina gen. nov., sp. nov., a marine actinomycete isolated from a sediment in the northern South China Sea

Xin-Peng Tian1,2,{dagger}, Xiao-Yang Zhi2,{dagger}, Yun-Qi Qiu1, Yu-Qin Zhang2, Shu-Kun Tang2, Li-Hua Xu2, Si Zhang1,3 and Wen-Jun Li1,2

1 Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China
2 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
3 Hainan Key Lab of Tropical Marine Biotechnology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Sanya, 572000, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
Si Zhang
zhangsi{at}scsio.ac.cn

The taxonomic position of an actinomycete, designated SCSIO 00231T, isolated from a sediment sample collected from the northern South China Sea, was determined by using a polyphasic approach. The organism formed fragmented substrate hyphae and sparse aerial mycelium on modified ISP 2 medium. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain SCSIO 00231T fell into the family Pseudonocardiaceae, in which it formed a distinct lineage and was loosely associated with Thermocrispum municipale DSM 44069T, with 93 % similarity. The other closest phylogenetic neighbours were Saccharopolyspora erythraea NRRL 2338T (92.6 % similarity) and Amycolatopsis sacchari DSM 44468T (93.1 % similarity). The isolate had cell-wall type IV (meso-diaminopimelic acid and whole-cell sugars arabinose, galactose and glucose) and phospholipid type III. The predominant menaquinone was MK-9(H4). The G+C content of the genomic DNA was 69 mol%. Based on these data, strain SCSIO 00231T can be readily distinguished from previously described organisms and represents a new genus within the family Pseudonocardiaceae. The name Sciscionella gen. nov. is proposed, with the novel species Sciscionella marina sp. nov. The type strain of Sciscionella marina is SCSIO 00231T (=KCTC 19433T =CCTCC AA208009T).

{dagger}These authors contributed equally to this work.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain SCSIO 00231T is EU503139.

Scanning electron micrographs of mycelium of strain SCSIO 00231T are available as supplementary material with the online version of this paper.






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