Paludibacterium paludis sp. nov., isolated from a marsh

Shih-Yi Sheu, Zih-Han Chen, Chiu-Chung Young, Wen-Ming Chen
International Journal of Systematic and Evolutionary Microbiology 2014, 64 (Pt 7): 2497-2502
A bacterial strain, designated KBP-21(T), was isolated from a water sample taken from the Banping Lake Wetland Park in Taiwan and characterized in a taxonomic study using a polyphasic approach. Cells of strain KBP-21(T) were Gram-stain-negative, facultatively anaerobic, poly-β-hydroxybutyrate-accumulating, motile rods that formed yellow colonies. Growth occurred at 15-40 °C (optimum, 30 °C), at pH 5.0-8.0 (optimum, pH 8.0) and with 0-2% NaCl (optimum, 0%). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain KBP-21(T) belonged to the genus Paludibacterium within the family Neisseriaceae of the class Betaproteobacteria and the closest related neighbour was Paludibacterium yongneupense 5YN8-15(T) with a 16S rRNA gene sequence similarity value of 96.4%. Strain KBP-21(T) contained summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and C18 : 1ω7c as the predominant fatty acids. The major respiratory quinone was Q-8. The DNA G+C content of the genomic DNA was 62.1 mol%. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, one uncharacterized aminophospholipid and several uncharacterized phospholipids. On the basis of the genotypic, chemotaxonomic and phenotypic data, strain KBP-21(T) represents a novel species in the genus Paludibacterium, for which the name Paludibacterium paludis sp. nov. is proposed. The type strain is KBP-21(T) ( = BCRC 80514(T)  = LMG 27230(T)  = KCTC 32182(T)).

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