Phylogenetic Evidence for Two New Insect-Associated Chlamydia of the Family <Emphasis Type="Italic">Simkaniaceae</Emphasis> |
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| Authors: | MyLo Ly Thao Linda Baumann Justin M Hess Bryce W Falk James CK Ng Penny J Gullan Paul Baumann |
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| Institution: | (1) Microbiology Section, University of California, One Shields Avenue, Davis, CA 95616-8665, USA, US;(2) Department of Plant Pathology, University of California, Davis, CA 95616-8680, USA, US;(3) Department of Entomology, University of California, Davis, CA 95616-8584, USA, US |
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| Abstract: | On the basis of 16S–23S ribosomal DNA analyses, the whitefly Bemisia tabaci (Sternorrhyncha, Aleyrodidae) and the eriococcid Eriococcus spurius (Sternorrhyncha, Eriococcidae) were each found to harbor novel related chlamydial species within the family Simkaniaceae. The generic designation Fritschea gen. nov. is proposed to accommodate the two species, F. bemisiae sp. nov. and F. eriococci sp. nov. The finding of chlamydial 16S–23S ribosomal DNA in B. tabaci is consistent with a previous electron microscopy study which found that bacteriocytes of this species contain structures
that we consider to resemble the elementary and reticulate bodies of chlamydia (Costa HS, Westcot DM, Ullman DE, Rosell R,
Brown JK, Johnson MW. Protoplasma 189:194–202, 1995). The cloning and sequencing of a 16.6 kilobase DNA fragment from F. bemisiae indicated that it contains six genes encoding for proteins similar to those found in other species of chlamydia. These results
extend the range of organisms that harbor chlamydia.
Received: 27 August 2002 / Accepted: 4 September 2002 |
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