Jasmonate Negatively Regulates Stomatal Development in Arabidopsis Cotyledons

Plant Physiology
Xiao HanDiqiu Yu

Abstract

Stomata are ports that facilitate gas and water vapor exchange between plants and their environment. Stomatal development is strictly regulated by endogenous signals and environmental cues. Jasmonate is an important signal that modulates multiple physiological processes in plants, yet the molecular mechanisms underlying its interactions with other developmental signaling pathways remain poorly understood. Here, we show that jasmonate negatively regulates stomatal development in Arabidopsis (Arabidopsis thaliana) cotyledons. Cotyledons of the wild type and stomata-overproliferating mutants (such as too many mouths-1 and stomatal density and distribution1-1) treated with methyl jasmonate exhibit a clear reduction in stomata number. By contrast, blocking endogenous jasmonate biosynthesis or perception enhanced stomatal development. Moreover, three MYC transcription factors involved in jasmonate signaling, MYC2, MYC3, and MYC4, were found to redundantly modulate jasmonate-inhibited stomatal development. A genetic analysis showed that these MYC proteins act upstream of the SPEECHLESS and FAMA transcription factors to mediate stomatal development. Furthermore, jasmonate repression of stomatal development is dependent on these three M...Continue Reading

Citations

May 3, 2019·Plant, Cell & Environment·Christian DuttonJulie E Gray
Jul 2, 2020·International Journal of Molecular Sciences·Lijuan XuanChongying Wang
Jul 18, 2020·Frontiers in Plant Science·Janithri S WickramanayakeFiona L Goggin
Jan 23, 2020·Proceedings of the National Academy of Sciences of the United States of America·Nathan E HavkoGregg A Howe
Oct 1, 2020·The Plant Journal : for Cell and Molecular Biology·Elias Feitosa-AraujoAdriano Nunes-Nesi
Jan 30, 2021·Journal of Experimental Botany·Hongbin WeiDexin Kong
Mar 9, 2021·Plant Physiology and Biochemistry : PPB·Ajit Pal SinghJitender Giri
Apr 21, 2021·Proceedings of the National Academy of Sciences of the United States of America·Chin-Min Kimmy HoDominique C Bergmann

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