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The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

1
Department of Entomology, Texas A&M University, College Station, TX 77840, USA
2
Ecology and Evolutionary Biology Program, Texas A&M University; College Station, TX 77840, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 1 November 2019 / Revised: 11 December 2019 / Accepted: 16 December 2019 / Published: 18 December 2019
(This article belongs to the Special Issue Insect-Plant-Microbe Interactions)
There is increasing evidence that plant-associated microorganisms play important roles in shaping interactions between plants and insect herbivores. Studies of both pathogenic and beneficial plant microbes have documented wide-ranging effects on herbivore behavior and performance. Some studies, for example, have reported enhanced insect-repellent traits or reduced performance of herbivores on microbe-associated plants, while others have documented increased herbivore attraction or performance. Insect herbivores frequently rely on plant cues during foraging and oviposition, suggesting that plant-associated microbes affecting these cues can indirectly influence herbivore preference. We review and synthesize recent literature to provide new insights into the ways pathogenic and beneficial plant-associated microbes alter visual, olfactory, and gustatory cues of plants that affect host-plant selection by insect herbivores. We discuss the underlying mechanisms, ecological implications, and future directions for studies of plant-microbial symbionts that indirectly influence herbivore behavior by altering plant traits. View Full-Text
Keywords: beneficial microorganisms; phytopathogens; herbivore foraging; oviposition; visual cues; olfactory cues; gustatory cues; vector herbivore; non-vector herbivore beneficial microorganisms; phytopathogens; herbivore foraging; oviposition; visual cues; olfactory cues; gustatory cues; vector herbivore; non-vector herbivore
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MDPI and ACS Style

Grunseich, J.M.; Thompson, M.N.; Aguirre, N.M.; Helms, A.M. The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores. Plants 2020, 9, 6.

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