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Cited by 12Insect symbiosis and bacterial influencesAnimal Behavior and ReproductionPhytoplasmas and Hemiptera pathogens

The DOI matches its Crossref record; 72 of the 72 references it cites were found in a registry or an index.

Self-stabilization mechanism encoded by a bacterial toxin facilitates reproductive parasitism

Open access
Harumoto, Toshiyuki·2023·Current Biology

Published version of a preprint

Abstract

A wide variety of maternally transmitted endosymbionts in insects are associated with reproductive parasitism, whereby they interfere with host reproduction to increase the ratio of infected females and spread within populations.1,2 Recent successes in identifying bacterial factors responsible for reproductive parasitism 3,4,5,6,7 as well as further omics approaches 8,9,10,11,12 have highlighted the common appearance of deubiquitinase domains, although their biological roles-in particular, how they link to distinct manipulative phenotypes-remain poorly defined. Spiroplasma poulsonii is a helical and motile bacterial endosymbiont of Drosophila,13,14 which selectively kills male progeny with a male-killing toxin Spaid (S. poulsonii androcidin), which encodes an ovarian tumor (OTU) deubiquitinase domain.6 Artificial expression of Spaid in flies reproduces male-killing-associated pathologies that include abnormal apoptosis and neural defects during embryogenesis 6,15,16,17,18,19; moreover, it highly accumulates on the dosage-compensated male X chromosome,20 congruent with cellular defects such as the DNA damage/chromatin bridge breakage specifically induced upon that chromosome.6,21,22,23 Here, I show that without the function of OTU, Spaid is polyubiquitinated and degraded through the host ubiquitin-proteasome pathway, leading to the attenuation of male-killing activity as shown previously.6 Furthermore, I find that Spaid utilizes its OTU domain to deubiquitinate itself in an intermolecular manner. Collectively, the deubiquitinase domain of Spaid serves as a self-stabilization mechanism to facilitate male killing in flies, optimizing a molecular strategy of endosymbionts that enables the efficient manipulation of the host at a low energetic cost.

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Crossref · 10.1016/j.cub.2023.08.032

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Cites

Research works printed but not linked: 1

  1. Tsuchiyama-Omura, 1988, Morphological features of embryogenesis in Drosophila melanogaster infected with a male-killing Spiroplasma, Zool. Sci., 5, 375

Metadata

Authors
Harumoto, T.
Affiliations
Kyoto University (JP)
Corresponding author
Harumoto, Toshiyuki
Venue
Current Biology
Publisher
Elsevier BV
Published
2023-09
Volume
33
Issue
18
Pages
4021-4029.e6
ISSN
0960-9822 (ISSN-L)
OpenAlex
W4386444034
Cited by
12
References
72
Citations by year
2026: 4 · 2025: 4 · 2024: 3 · 2023: 1
FWCI
2.38
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion)
  • Kyoto University Research Information Repository (Kyoto University) (submittedVersion, cc-by-nc-nd)
Funders
  • Japan Society for the Promotion of Science (22K19352)
  • Exploratory Research for Advanced Technology (JPMJER1902)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect symbiosis and bacterial influences
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Phytoplasmas and Hemiptera pathogens
Keywords
reproductive parasitism, Wolbachia, bacterial toxins, self-stabilization, cytoplasmic incompatibility, insect reproduction, host-parasite interactions
MeSH terms
Animals, Bacterial Toxins, Drosophila melanogaster, Female, Male, Reproduction, Spiroplasma, Symbiosis

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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