Fusarium phytopathogens as insect mutualists

Aileen Berasategui*, Shounak Jagdale, Hassan Salem*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

AU As vectors: Pleaseconfirmthatallheadinglevelsarerepresentedcorrectly of numerous plant pathogens, herbivorous insects : play a key role in the epidemiology of plant disease. But how phytopathogens impact the metabolism, physiology, and fitness of their insect vectors is often unexplored within these tripartite interactions. Here, we examine the diverse symbioses forged between insects and members of the ascomycete fungal genus Fusarium. While Fusarium features numerous plant pathogens that are causal to diseases such as wilts and rots, many of these microbes also engage in stable mutualisms across several insect clades. Matching a diversity in symbiont localization and transmission routes, we highlight the various roles fusaria fulfill towards their insect hosts, from upgrading their nutritional physiology to providing defense against natural enemies. But as the insect partner is consistently herbivorous, we emphasize the convergent benefit Fusarium derives in exchange: propagation to a novel host plant. Collectively, we point to the synergy arising between a phytopathogen and its insect vector, and the consequences inflicted on their shared plant.

Original languageEnglish
Article numbere1011497
Pages (from-to)1-8
Number of pages8
JournalPLos Pathogens
Volume19
Issue number7
Early online date27 Jul 2023
DOIs
Publication statusPublished - Jul 2023

Bibliographical note

Funding Information:
We gratefully acknowledge funding from the Max Planck Society (HS, SJ), and the German Research Foundation (Deutsche Forschungsgemeinschaft) under Germany’s Excellence Strategy [EXC 2124 – 390838134] (AB) and project SA 3105/2-1 (HS). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. We thank Teiya Kijimoto and Marcio de Castro Silva Filho for insect photographs. We also thank Rebecca Graham from the Department of Agriculture Western Australia for the D. saccharalis image, shared under a Creative Commons Attribution 3.0 Australia license, and Steve Scholnick for the E. validus picture, shared under the Creative Commons Attribution 4.0 International license.

Publisher Copyright:
© 2023 Berasategui et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funding

We gratefully acknowledge funding from the Max Planck Society (HS, SJ), and the German Research Foundation (Deutsche Forschungsgemeinschaft) under Germany’s Excellence Strategy [EXC 2124 – 390838134] (AB) and project SA 3105/2-1 (HS). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. We thank Teiya Kijimoto and Marcio de Castro Silva Filho for insect photographs. We also thank Rebecca Graham from the Department of Agriculture Western Australia for the D. saccharalis image, shared under a Creative Commons Attribution 3.0 Australia license, and Steve Scholnick for the E. validus picture, shared under the Creative Commons Attribution 4.0 International license.

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