1887

Abstract

Bacteria called ‘’ are endosymbionts of the plant-feeding whitefly and scale insect . In the gut of , these bacteria live within bacteriocyte cells that are transmitted directly from the parent to oocytes. Whiteflies cause serious economic damage to many agricultural crops; fecundity and host range are less than those of , possibly due to the presence of this endosymbiont. The endosymbiont has been characterized using electron microscopy and DNA analysis but has not been isolated or propagated outside of insects. The present study compared sequences for 11 endosymbiont genes to genomic data for chlamydial families , and and to 16S rRNA gene signature sequences from 330 chlamydiae. We concluded that it was appropriate to propose ‘ Fritschea bemisiae’ strain Falk and ‘ Fritschea eriococci’ strain Elm as members of the family in the .

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2005-07-01
2020-01-25
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vol. , part 4, pp. 1581 - 1587

Clustering of 331 chlamydial 16S rRNA gene signature sequences. An uncorrected neighbour-joining tree is shown. The nine species from the represent the 177 available sequences. This tree reflects the diversity of chlamydiae. Source/host is indicated by colour: red, humans (red CRGs are from human blood or aortic aneurysms); blue, animals/insects; green, fertilizer; black, water or other micro-organisms (Meijer , 2000). Strains obtained from two or more hosts/environments are indicated with asterisks in the other colour(s). Validly published names and species are in boldface/italic type. Bar, 5 substitutions per 100 nucleotides.

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Use of the broad range PCR assay for the identification and classification of bacteria in the order . In , p. 9. Edited by P. Saikku. Bologna: Universitas Helsingiensis.



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