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Int J Syst Evol Microbiol 59 (2009), 1672-1678; DOI  10.1099/ijs.0.006619-0
© 2009 International Union of Microbiological Societies

Planobacterium taklimakanense gen. nov., sp. nov., a member of the family Flavobacteriaceae that exhibits swimming motility, isolated from desert soil

Fang Peng, Ming Liu, Lei Zhang, Jun Dai, Xueshong Luo, Hongli An and Chengxiang Fang

College of Life Sciences, Wuhan University, Wuhan 430072, PR China

Correspondence
Chengxiang Fang
cxfang{at}whu.edu.cn

A Gram-negative and rod-shaped bacterial strain, X-65T, isolated from desert soil of Xinjiang, China, was subjected to phenotypic and phylogenetic studies. On the basis of 16S rRNA gene sequence analyses, the isolate showed closest relationship to members of the genera Chryseobacterium (92.4–95.4 % similarity), Cloacibacterium (94.0 %), Sejongia (93.9 %) and Elizabethkingia (93.8 %) and to Riemerella columbina LMG 11607T (93.3 %). The strain differed from its phylogenetic neighbours by its swimming motility in liquid cultures and the presence of long appendages and large amounts of the straight-chain fatty acids 16 : 0 and 18 : 0. Growth was observed at 18–37 °C (optimum 30 °C), at pH 6–12 (optimum pH 7–8) and in the presence of 0–3 % NaCl (optimum 0 %). Flexirubin pigments were absent. The major isoprenoid quinone was MK-6. The DNA G+C content of X-65T was 41.5 mol%. The data presented in this study indicate that the isolate should be classified in a novel genus and species within the family Flavobacteriaceae, for which the name Planobacterium taklimakanense gen. nov., sp. nov. is proposed. The type strain of Planobacterium taklimakanense is X-65T (=CCTCC AB 208154T =NRRL B-51322T).

Abbreviations: CBR, Chryseobacterium–Bergeyella–Riemerella

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain X-65T is EU718058.

A video showing actively motile cells of strain X-65T is available as supplementary material with the online version of this paper.






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