No hormone to rule them all: Interactions of plant hormones during the responses of plants to pathogens

Abstract

Plant hormones are essential regulators of plant growth and immunity. In the last few decades, a vast amount of information has been obtained detailing the role of different plant hormones in immunity, and how they work together to ultimately shape the outcomes of plant pathogen interactions. Here we provide an overview on the roles of the main classes of plant hormones in the regulation of plant immunity, highlighting their metabolic and signaling pathways and how plants and pathogens utilize these pathways to activate or suppress defence.

Keywords: Abscisic acid; Auxin; Brassinosteroids; Cytokinin; Defence responses; Ethylene; Gibberellic acid; Hormonal crosstalk; Jasmonic acid; Pathogens; Phytohormones; Plant hormones; Plant immunity; Salicylic acid.