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Insects 2018, 9(2), 68; https://doi.org/10.3390/insects9020068

Secretion Systems and Secreted Proteins in Gram-Negative Entomopathogenic Bacteria: Their Roles in Insect Virulence and Beyond

1
Center for Insect Science, University of Arizona, 1007 E. Lowell Street, Tucson, AZ 85721, USA
2
Department of Entomology and School of Animal and Comparative Biomedical Sciences, University of Arizona, 1140 E. South Campus Dr., Tucson, AZ 85721, USA
*
Author to whom correspondence should be addressed.
Received: 13 May 2018 / Revised: 11 June 2018 / Accepted: 13 June 2018 / Published: 19 June 2018
(This article belongs to the Special Issue Mechanisms Underlying Transmission of Insect Pathogens)
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Abstract

Many Gram-negative bacteria have evolved insect pathogenic lifestyles. In all cases, the ability to cause disease in insects involves specific bacterial proteins exported either to the surface, the extracellular environment, or the cytoplasm of the host cell. They also have several distinct mechanisms for secreting such proteins. In this review, we summarize the major protein secretion systems and discuss examples of secreted proteins that contribute to the virulence of a variety of Gram-negative entomopathogenic bacteria, including Photorhabdus, Xenorhabdus, Serratia, Yersinia, and Pseudomonas species. We also briefly summarize two classes of exported protein complexes, the PVC-like elements, and the Tc toxin complexes that were first described in entomopathogenic bacteria. View Full-Text
Keywords: secretion systems; Gram-negative bacteria; host interactions; entomopathogens secretion systems; Gram-negative bacteria; host interactions; entomopathogens
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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McQuade, R.; Stock, S.P. Secretion Systems and Secreted Proteins in Gram-Negative Entomopathogenic Bacteria: Their Roles in Insect Virulence and Beyond. Insects 2018, 9, 68.

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