Diversity of endosymbiont bacteria associated with a non-filarial nematode group

作者：Lazarova Stela S; Brown Derek J F; Oliveira C Marcelo G; Fenton Brian; Mackenzie Katrin; Wright Frank; Malloch Gaynor; Neilson Roy

来源：Nematology, 2016, 18(5): 615-623.

DOI：10.1163/15685411-00002982

<jats:p>There is a significant knowledge gap with regard to non-filarial nematodes and their relationships, if any, with intracellular bacteria, with only sporadic reports in the literature. An intracellular bacteria <jats:italic>Xiphinematobacter</jats:italic>, belonging to subdivision 2 of the Verrucomicrobia, was previously reported in the ovaries of three species of the non-filarial <jats:italic>Xiphinema americanum</jats:italic>-group of nematodes. We explored the diversity of <jats:italic>Xiphinematobacter</jats:italic> in 22 populations of <jats:italic>X. americanum</jats:italic> sourced from six continents and conservatively have identified nine phylotypes, six of which have not previously been reported. A geographic basis to the phylotypes was noted with phylotypes A and B only found in Europe, whereas phylotypes F, G, H and I were mainly found in North America. Phylotypes C, D and E showed greater geographical variation. Sequences of <jats:italic>Xiphinematobacter</jats:italic> from this study help to inform the taxonomy of Verrucomicrobia such that the status and composition of Verrucomicrobia subdivision 2 potentially requires reflection.</jats:p>

• 出版日期2016