Early transcriptomic responses of rice leaves to herbivory by Spodoptera frugiperda
Abstract
During herbivory, chewing insects deposit complex oral secretions (OS) onto the plant wound.
Understanding how plants respond to the different cues of herbivory remains an active area
of research. In this study, we used an herbivory-mimick experiment to investigate the early
transcriptional response of rice plants leaves to wounding, OS, and OS microbiota from Spodoptera
frugiperda larvae. Wounding induced a massive early response associated to hormones such as
jasmonates. This response switched drastically upon OS treatment indicating the activation of OS
specific pathways. When comparing native and dysbiotic OS treatments, we observed few gene
regulation. This suggests that in addition to wounding the early response in rice is mainly driven by
the insect compounds of the OS rather than microbial. However, microbiota affected genes encoding
key phytohormone synthesis enzymes, suggesting an additional modulation of plant response by OS
microbiota.
Domains
Biodiversity and Ecology| Origin | Publisher files allowed on an open archive |
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