THESEUS1 modulates cell wall stiffness and abscisic acid production in Arabidopsis thaliana

Plant cells can be distinguished from animal cells by their cell walls and high-turgor pressure. Although changes in turgor and the stiffness of cell walls seem coordinated, we know little about the mechanism responsible for coordination. Evidence has accumulated that plants, like yeast, have a dedi...

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Published inProceedings of the National Academy of Sciences - PNAS Vol. 119; no. 1
Main Authors Bacete, Laura, Schulz, Julia, Engelsdorf, Timo, Bartosova, Zdenka, Vaahtera, Lauri, Yan, Guqi, Gerhold, Joachim Matthias, Tichá, Tereza, Øvstebø, Camilla, Gigli-Bisceglia, Nora, Johannessen-Starheim, Svanhild, Margueritat, Jeremie, Kollist, Hannes, Dehoux, Thomas, McAdam, Scott A M, Hamann, Thorsten
Format Journal Article
LanguageEnglish
Published United States National Academy of Sciences 04.01.2022
Subjects
Abscisic acid
Abscisic Acid - metabolism
Acid production
Arabidopsis - metabolism
Arabidopsis Proteins - metabolism
Arabidopsis thaliana
Biological Sciences
Biosynthesis
Cell Wall - metabolism
Cell walls
Chemical Sciences
Damage
Drought
Engineering Sciences
Homeostasis
Integrity
Jasmonic acid
Maintenance
Mechanical properties
Physics
Plant cells
Plant Roots - metabolism
Seedlings - metabolism
Stiffness
Turgor
Yeasts
abscisic acid
cell wall integrity
plant cell wall
THE1
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Summary:Plant cells can be distinguished from animal cells by their cell walls and high-turgor pressure. Although changes in turgor and the stiffness of cell walls seem coordinated, we know little about the mechanism responsible for coordination. Evidence has accumulated that plants, like yeast, have a dedicated cell wall integrity maintenance mechanism. It monitors the functional integrity of the wall and maintains integrity through adaptive responses induced by cell wall damage arising during growth, development, and interactions with the environment. These adaptive responses include osmosensitive induction of phytohormone production, defense responses, as well as changes in cell wall composition and structure. Here, we investigate how the cell wall integrity maintenance mechanism coordinates changes in cell wall stiffness and turgor in We show that the production of abscisic acid (ABA), the phytohormone-modulating turgor pressure, and responses to drought depend on the presence of a functional cell wall. We find that the cell wall integrity sensor THESEUS1 modulates mechanical properties of walls, turgor loss point, ABA biosynthesis, and ABA-controlled processes. We identify RECEPTOR-LIKE PROTEIN 12 as a component of cell wall integrity maintenance-controlling, cell wall damage-induced jasmonic acid (JA) production. We propose that THE1 is responsible for coordinating changes in turgor pressure and cell wall stiffness.
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PMCID: PMC8740707
Edited by Sean Cutler, Department of Botany and Plant Sciences, University of California, Riverside, CA; received October 27, 2021; accepted November 14, 2021
2Present address: Laboratory of Plant Physiology, Wageningen University, 6708 PB Wageningen, The Netherlands.
Author contributions: L.B., J.S., T.E., L.V., G.Y., J.M.G., J.M., T.D., S.A.M.M., and T.H. designed research; L.B., J.S., T.E., Z.B., L.V., G.Y., J.M.G., T.T., C.Ø., N.G.-B., S.J.-S., J.M., S.A.M.M., and T.H. performed research; L.B., J.S., T.E., L.V., G.Y., J.M.G., T.T., J.M., H.K., T.D., S.A.M.M., and T.H. analyzed data; and L.B., J.S., T.E., L.V., N.G.-B., H.K., T.D., S.A.M.M., and T.H. wrote the paper.
1Present address: Research Center for Non-Destructive Testing GmbH, A 4040 Linz, Austria.
ISSN:0027-8424
1091-6490
1091-6490
DOI:10.1073/pnas.2119258119