Chitinophaga pendula, sp. nov., from an air conditioner condensate drain line

A Gram-negative, rod-shaped and filamentous bacterium designated MD30B^T was isolated from a biofilm hanging in water flowing from an air conditioner condensate drain line in Honolulu, Hawai‘i. Based on 1517 nucleotides of the strain’s 16S rRNA gene, its nearest neighbours are Chitinophaga rhizosphaerae T16R-86^T (96.7 %), Chitinophaga caseinilytica S-52^T (96.6 %), Chitinophaga lutea ZY74^T (96.6 %), Chitinophaga niabensis JS13-10^T (96.6 %) and Chitinophaga ginsengisoli Gsoil 052^T (96.5 %). MD30B^T cells are non-motile, strictly aerobic, and catalase and oxidase positive. Growth occurs between 10 and 45 °C. Major fatty acids in whole cells of MD30B^T are 13-methyl tetradecanoic acid (34.1 %), cis-11-hexadecenoic acid (30.3 %), and 3-hydroxy, 15-methyl hexadecanoic acid (13.3 %). The quinone system contains predominantly menaquinone MK-7. The polar lipid profile contains the major lipids phosphatidylethanolamine, one unidentified lipid lacking a functional group, and two unidentified aminolipids. sym-Homospermidine is the major polyamine. The G+C content of the genome is 47.58 mol%. Based on phenotypic and genotypic differences between MD30B^T and extant species in the Chitinophaga , we propose that MD30B^T represents a new Chitinophaga species, for which the name Chitinophaga pendula sp. nov. is proposed to accommodate strain MD30B^T as the type strain (DSM 112477^T=NCTC 14606^T).