Alteration of ethylene signalling by root-associated microorganisms: from plant growth promoting bacteria to plant phenotype adjusting tools, Speaker in 11th International Plant Growth-Promoting Rhizobacteria Workshop

Research output: Contribution to conferenceAbstractAcademic

Abstract

The plant hormone ethylene is one of the central regulators of plant development and stress resistance. Optimal ethylene signaling is essential for plant fitness and is under strong selection pressure. Plants upregulate ethylene production in response to stress, and this hormone triggers defense mechanisms. Due to the pleiotropic effects of ethylene, adjusting stress responses to maximize resistance, while minimizing costs, is a central determinant of plant fitness. Ethylene signaling is influenced by the plant-associated microbiome. We therefore argue that the regulation, physiology, and evolution of the ethylene signaling can best be viewed as the interactive result of plant genotype and associated microbiota.
In this presentation, we combine the current understanding on ethylene signalling and recapitulate the multiple ways microorganisms interfere with it. We then will present our results on ethylene modulating bacteria on plant growth and stress response under different stress condition including submergence and heavy metals.
Instead of being beneficial or deleterious, our results show that, ethylene modulating bacteria alter the whole plant life history along a trade-offs. We finally discuss the potential impacts of this alteration on plant ecology and evolution, and would like to expand this model to whole plant growth promoting traits of microbiota.
Original languageEnglish
Publication statusPublished - 2018
Event11th International Plant Growth-Promoting Rhizobacteria Workshop - Hotel Grand Pacific, Victoria, Canada
Duration: 17 Jun 201821 Jun 2018

Conference

Conference11th International Plant Growth-Promoting Rhizobacteria Workshop
Country/TerritoryCanada
CityVictoria
Period17/06/1821/06/18

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