Document Detail


Feminizing Wolbachia in Zyginidia pullula (Insecta, Hemiptera), a leafhopper with an XX/X0 sex-determination system.
MedLine Citation:
PMID:  16928646     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Zyginidia pullula is a grass-dwelling leafhopper characterized by a bisexual reproduction mode. In this species, some females collected in Northern Italy, when mated with males, gave origin to an exclusively female brood. Here, we demonstrated that in these lineages an infection by a new strain of Wolbachia pipientis-designated as wZygpul-was detected by amplifying and sequencing the wsp and 16S rRNA genes. About half of the female progeny were characterized by intersexual phenotypes, i.e. showing upper pygofer appendages, a typical male secondary sexual feature. The karyological analysis proved that while phenotypically normal females had a female genotype, those with upper pygofer appendages had a male genotype and were thus feminized males. The complete removal of W. pipientis after tetracycline treatment of morphologically normal females, and the consequent re-appearance of males in the brood, permitted us to connect the feminizing effect with the presence of the bacterium. This is the first case of feminization by W. pipientis in an XX/X0 sex-determination system, and is the second case reported in insects.
Authors:
I Negri; M Pellecchia; P J Mazzoglio; A Patetta; A Alma
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  273     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-08-24     Completed Date:  2006-11-01     Revised Date:  2013-06-07    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  2409-16     Citation Subset:  IM    
Affiliation:
Entomologia e Zoologia Applicate all'Ambiente Carlo Vidano, Università di Torino, Via L da Vinci 44, 10095 Grugliasco (TO), Italy.
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Feminization / microbiology*
Hemiptera / genetics,  microbiology*,  physiology*
Male
Sex Determination Processes*
Wolbachia / physiology*
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