Cited by 18Insect symbiosis and bacterial influencesParasitic Diseases Research and TreatmentGenetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

Sex and stripping: The key to the intimate relationship between Wolbachia and host?

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Negri, Ilaria, Pellecchia, Marco, Grève, Pierre, Daffonchio, Daniele, Bandi, Claudio, Alma, Alberto·2010·Communicative & Integrative Biology

Abstract

Wolbachia pipientis is known to infect only arthropods and nematodes (mainly filarial worms). A unique feature shared by the two Phyla is the ability to replace the exoskeleton, a process known as ecdysis. This shared characteristic is thought to reflect a common ancestry. Arthropod moulting is induced by the steroid hormone 20-hydroxyecdysone (20E) and a role for ecdysteroids in nematode ecdysis has also been suggested. Removing Wolbachia from filarial worms impairs the host's development. From analyses of the genome of Wolbachia harbored by the filarial nematode Brugia malayi and that of its host, the bacterium may provide a source of heme, an essential component of cytochrome P450's that are necessary for steroid hormone biosynthetic pathways.In arthropods, Wolbachia is a reproductive manipulator, inducing various phenotypic effects that may be due to differences in host physiology, in particular, endocrine-related processes governing development and reproduction. Insect steroids have well-defined roles in the coordination of multiple developmental processes, and in adults they control important aspects of reproduction, including ovarian development, oogenesis, sexual behavior, and in some taxa vitellogenin biosynthesis.According to some authors ecdysteroids may also act as sex hormones. In insects sex differentiation is generally thought to be a strictly genetic process, in which each cell decides its own sexual fate based on its sex chromosome constitution, but, surprisingly, recent data demonstrate that in Drosophila sex determination is not cell-autonomous, as it happens in mammals. Thus the presence of signals coordinating the development of a gender-specific phenotype cannot be excluded.This could explain why Wolbachia interferes with insect reproduction; and also could explain why Wolbachia interferes with insect development.Thus, is "sex (=reproduction) and stripping (=ecdysis)" the key to the intimate relationship between Wolbachia and its host?

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Crossref · 10.4161/cib.3.2.10520

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  • Wolbachia provides the heme group to filariae, which is an essential component of cytochrome P450, required for the biosynthesis of steroidal hormones.

    “In this respect, Wolbachia provides the heme group to filariae, which is an essential component of cytochrome P450, required for the biosynthesis of steroidal hormones, among others (305).”

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Authors
Negri, I., Pellecchia, M., Grève, P., Daffonchio, D., Bandi, C., & Alma, A.
Affiliations
  • University of Turin (IT)
  • Università Cattolica del Sacro Cuore (IT)
  • Centre National de la Recherche Scientifique (FR)
  • University of Milan (IT)
Corresponding author
Negri, Ilaria
Venue
Communicative & Integrative Biology
Published
2010-03
Volume
3
Issue
2
Pages
110-115
ISSN
1942-0889 (ISSN-L)
OpenAlex
W2021872063
Cited by
18
References
68
Citations by year
2026: 1 · 2022: 1 · 2020: 1 · 2018: 1 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 2 · 2012: 5
FWCI
3.42
Type
journal article
Language
en
Open access
Locations
  • Communicative & Integrative Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect symbiosis and bacterial influences
  • Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
Keywords
Wolbachia, molting, 20-hydroxyecdysone, ecdysteroids, steroid hormones, sex determination, reproductive manipulation, Brugia malayi, heme biosynthesis, cytochrome P450, insect development

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