Hedlund Brian P, Staley James T
Int J Syst Evol Microbiol. 2002 Jul;52(Pt 4):1377-1382. doi: 10.1099/00207713-52-4-1377.
16S rDNA was sequenced from 16 strains of the oral commensal Simonsiella and was used to assess relationships between Simonsiella strains and other members of the Neisseriaceae. In all analyses, Simonsiella strains grouped according to established species designations and the mammalian hosts from which they were isolated. The commensals from cats and dogs formed a monophyletic group. The monophyly of the genus Simonsiella, however, could be neither supported nor rejected; deep nodes in the trees were unstable depending on the phylogenetic method or on the particular sequences used in the analysis. Instabilities may be attributable to frequent gene transfer between Neisseria or other members of the Neisseriaceae and Simonsiella.
对16株口腔共生西蒙斯菌属菌株的16S核糖体DNA（rDNA）进行了测序，并用于评估西蒙斯菌属菌株与奈瑟菌科其他成员之间的关系。在所有分析中，西蒙斯菌属菌株根据既定的物种命名以及分离它们的哺乳动物宿主进行分组。来自猫和狗的共生菌形成了一个单系群。然而，西蒙斯菌属的单系性既无法得到支持，也无法被否定；根据系统发育方法或分析中使用的特定序列，树中的深层节点不稳定。不稳定性可能归因于奈瑟菌或奈瑟菌科其他成员与西蒙斯菌属之间频繁的基因转移。
