Ideonella 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 2016, 66 (2): 1052-1057
A bacterial strain, designated KBP-31(T), was isolated from a water sample taken from the Banping Lake Wetland Park in Taiwan and characterized using a polyphasic taxonomic approach. Cells of strain KBP-31(T) were Gram-stain-negative, strictly aerobic, motile, light-yellow rods. Growth occurred at 10-37 °C (optimum 25 °C), at pH 6-8 (optimum pH 6) and with 0-1 % NaCl (w/v, optimum 0 %). Phylogenetic analyses based on 16S rRNA gene sequences showed that strain KBP-31(T) belonged to the genus Ideonella and was most closely related to Ideonella dechloratans ATCC 51718(T) with a sequence similarity of 98.2 %. Strain KBP-31(T) contained summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c) and C16 : 0 as the predominant fatty acids. The major hydroxyl fatty acid was C10 : 0 3-OH. The polar lipid profile consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, an uncharacterized aminophospholipid and two uncharacterized phospholipids. The DNA G+C content of the genomic DNA was 67.9 mol%. The DNA-DNA relatedness of strain KBP-31(T) with respect to recognized species of the genus Ideonella was less than 70 %. On the basis of the phylogenetic inference and phenotypic data, strain KBP-31(T) should be classified as a novel species, for which the name Ideonella paludis sp. nov. is proposed. The type strain is KBP-31(T) ( = BCRC 80524(T) = KCTC 32238(T)).

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