Modulation of Arabidopsis root growth by specialized triterpenes

Modulation of Arabidopsis root growth by specialized triterpenes

© 2020 The Authors New Phytologist © 2020 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 230(2021), 1 vom: 01. Apr., Seite 228-243
1. Verfasser: Bai, Yuechen (VerfasserIn)
Weitere Verfasser: Fernández-Calvo, Patricia, Ritter, Andrés, Huang, Ancheng C, Morales-Herrera, Stefania, Bicalho, Keylla U, Karady, Michal, Pauwels, Laurens, Buyst, Dieter, Njo, Maria, Ljung, Karen, Martins, José C, Vanneste, Steffen, Beeckman, Tom, Osbourn, Anne, Goossens, Alain, Pollier, Jacob
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis thaliana NINJA auxin brassinosteroid jasmonate thalianol thalianol acyltransferase 2 (THAA2) thalianol synthase (THAS) mehr... Arabidopsis Proteins Cyclopentanes Indoleacetic Acids Oxylipins Triterpenes
Beschreibung
Zusammenfassung:© 2020 The Authors New Phytologist © 2020 New Phytologist Foundation.
Plant roots are specialized belowground organs that spatiotemporally shape their development in function of varying soil conditions. This root plasticity relies on intricate molecular networks driven by phytohormones, such as auxin and jasmonate (JA). Loss-of-function of the NOVEL INTERACTOR OF JAZ (NINJA), a core component of the JA signaling pathway, leads to enhanced triterpene biosynthesis, in particular of the thalianol gene cluster, in Arabidopsis thaliana roots. We have investigated the biological role of thalianol and its derivatives by focusing on Thalianol Synthase (THAS) and Thalianol Acyltransferase 2 (THAA2), two thalianol cluster genes that are upregulated in the roots of ninja mutant plants. THAS and THAA2 activity was investigated in yeast, and metabolite and phenotype profiling of thas and thaa2 loss-of-function plants was carried out. THAA2 was shown to be responsible for the acetylation of thalianol and its derivatives, both in yeast and in planta. In addition, THAS and THAA2 activity was shown to modulate root development. Our results indicate that the thalianol pathway is not only controlled by phytohormonal cues, but also may modulate phytohormonal action itself, thereby affecting root development and interaction with the environment
Beschreibung:Date Completed 14.05.2021
Date Revised 16.07.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17144