Document Detail

Bacteriocyte-like cells harbour Wolbachia in the ovary of Drosophila melanogaster (Insecta, Diptera) and Zyginidia pullula (Insecta, Hemiptera).
MedLine Citation:
PMID:  20817243     Owner:  NLM     Status:  MEDLINE    
Wolbachia is the most widespread bacterial endosymbiont in insects. It is responsible for a variety of reproductive alterations of the hosts. Wolbachia is transmitted through the germline from mother to offspring and, in rare cases, between individuals. This implies that acquired properties (through symbiosis with Wolbachia) can become heritable. We investigated the transovarial inheritance of Wolbachia in two phylogenetically distant insects, Drosophila melanogaster and Zyginidia pullula. We detected in both systems bacteriocyte-like cells, densely packed with Wolbachia endosymbionts, at the tip of the ovarioles. Bacteriocytes are cells specialized to harbour bacteria, typical of mutualistic insect symbiosis. Our observations of bacteriocyte-like cells harbouring Wolbachia in the ovary emphasize the plasticity of the female reproductive system of insects, which maintains its function while some cells are densely colonized by bacteria. In summary, there is evidence from different insects that bacteria which behave as parasites of reproduction are harboured by cells resembling bacteriocytes, which appear to mediate transmission of the bacteria to the progeny. It seems a valid hypothesis that the bacteriocyte-like cells that we observed are not the result of a co-evolution of host and symbiont, considering that Wolbachia is not an obligatory symbiont in Drosophila and Zyginidia.
Luciano Sacchi; Marco Genchi; Emanuela Clementi; Ilaria Negri; Alberto Alma; Stefan Ohler; Davide Sassera; Kostas Bourtzis; Claudio Bandi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tissue & cell     Volume:  42     ISSN:  1532-3072     ISO Abbreviation:  Tissue Cell     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-27     Completed Date:  2011-01-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0214745     Medline TA:  Tissue Cell     Country:  Scotland    
Other Details:
Languages:  eng     Pagination:  328-33     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Dipartimento di Biologia Animale, Università degli Studi di Pavia, Italy.
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MeSH Terms
Drosophila melanogaster / microbiology*
Hemiptera / microbiology*
Ovary / cytology*,  microbiology

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