Evolution of Hormone Signaling Networks in Plant Defense

Studies with model plants such as Arabidopsis thaliana have revealed that phytohormones are central regulators of plant defense. The intricate network of phytohormone signaling pathways enables plants to activate appropriate and effective defense responses against pathogens as well as to balance def...

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Bibliographic Details
Published in:Annual review of phytopathology 2017-08, Vol.55 (1), p.401-425
Main Authors: Berens, Matthias L, Berry, Hannah M, Mine, Akira, Argueso, Cristiana T, Tsuda, Kenichi
Format: Article
Language:English
Subjects:
Biological Evolution
evolution
hormone cross talk
phytohormones
plant defense
Plant Diseases
Plant Growth Regulators - physiology
Plant Physiological Phenomena
Signal Transduction
trade-off
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Summary:Studies with model plants such as Arabidopsis thaliana have revealed that phytohormones are central regulators of plant defense. The intricate network of phytohormone signaling pathways enables plants to activate appropriate and effective defense responses against pathogens as well as to balance defense and growth. The timing of the evolution of most phytohormone signaling pathways seems to coincide with the colonization of land, a likely requirement for plant adaptations to the more variable terrestrial environments, which included the presence of pathogens. In this review, we explore the evolution of defense hormone signaling networks by combining the model plant-based knowledge about molecular components mediating phytohormone signaling and cross talk with available genome information of other plant species. We highlight conserved hubs in hormone cross talk and discuss evolutionary advantages of defense hormone cross talk. Finally, we examine possibilities of engineering hormone cross talk for improvement of plant fitness and crop production.
ISSN:0066-4286
1545-2107
DOI:10.1146/annurev-phyto-080516-035544