Fusarium phytopathogens as insect mutualists

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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.

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APA

Berasategui, A., Jagdale, S., & Salem, H. (2023). Fusarium phytopathogens as insect mutualists. PLoS Pathogens, 19(7 July). https://doi.org/10.1371/journal.ppat.1011497

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