Weon Hang-Yeon, Yoo Seung-Hee, Kim Yoo-Jeong, Son Jung-A, Kim Byung-Yong, Kwon Soon-Wo, Koo Bon-Sung
Applied Microbiology Division, National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Republic of Korea.
Int J Syst Evol Microbiol. 2009 Jun;59(Pt 6):1267-71. doi: 10.1099/ijs.0.004804-0.
Two yellow-coloured bacterial strains, designated JS13-10(T) and JS16-4(T), were isolated from soil from Jeju Island, Republic of Korea. On the basis of 16S rRNA gene sequence analysis, the strains were found to be affiliated with members of the genus Chitinophaga. Phenotypically, the novel strains were identified as being different from each other and from recognized species of the genus Chitinophaga. DNA-DNA hybridization tests between the two novel strains and closely related Chitinophaga reference strains produced DNA relatedness values that were significantly lower (<36 %) than those generally accepted as the highest threshold for the phylogenetic definition of a species. On the basis of their distinct taxonomic characteristics, these strains represent two novel species of the genus Chitinophaga, for which the names Chitinophaga niabensis sp. nov. (type strain JS13-10(T)=KACC 12952(T)=JCM 15440(T)) and Chitinophaga niastensis sp. nov. (type strain JS16-4(T)=KACC 12954(T)=JCM 15441(T)) are proposed.
从韩国济州岛土壤中分离出两株黄色细菌菌株，分别命名为JS13-10(T)和JS16-4(T)。基于16S rRNA基因序列分析，发现这些菌株隶属于噬几丁质菌属。从表型上看，这些新菌株彼此不同，也与噬几丁质菌属中已确认的物种不同。两株新菌株与密切相关的噬几丁质菌参考菌株之间的DNA-DNA杂交试验产生的DNA相关性值显著低于（<36%）通常被认为是物种系统发育定义的最高阈值。基于其独特的分类特征，这些菌株代表了噬几丁质菌属的两个新物种，为此提出了新名称噬几丁质菌尼亚本斯氏菌（Chitinophaga niabensis sp. nov.）（模式菌株JS13-10(T)=KACC 12952(T)=JCM 15440(T)）和噬几丁质菌尼亚斯氏菌（Chitinophaga niastensis sp. nov.）（模式菌株JS16-4(T)=KACC 12954(T)=JCM 15441(T)）。
