AZG1 is a cytokinin transporter that interacts with auxin transporter PIN1 and regulates the root stress response

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 238(2023), 5 vom: 14. Juni, Seite 1924-1941
1. Verfasser:	Tessi, Tomás M (VerfasserIn)
Weitere Verfasser:	Maurino, Veronica G, Shahriari, Mojgan, Meissner, Esther, Novak, Ondrej, Pasternak, Taras, Schumacher, Benjamin S, Ditengou, Franck, Li, Zenglin, Duerr, Jasmin, Flubacher, Noemi S, Nautscher, Moritz, Williams, Alyssa, Kazimierczak, Zuzanna, Strnad, Miroslav, Thumfart, Jörg-Oliver, Palme, Klaus, Desimone, Marcelo, Teale, William D
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2023
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't auxin auxin transport crosstalk cytokinin cytokinin transport lateral root salt stress Arabidopsis Proteins mehr... Cytokinins Indoleacetic Acids Membrane Transport Proteins PIN1 protein, Arabidopsis Sodium Chloride 451W47IQ8X

Beschreibung
Zusammenfassung:	© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation. An environmentally responsive root system is crucial for plant growth and crop yield, especially in suboptimal soil conditions. This responsiveness enables the plant to exploit regions of high nutrient density while simultaneously minimizing abiotic stress. Despite the vital importance of root systems in regulating plant growth, significant gaps of knowledge exist in the mechanisms that regulate their architecture. Auxin defines both the frequency of lateral root (LR) initiation and the rate of LR outgrowth. Here, we describe a search for proteins that regulate root system architecture (RSA) by interacting directly with a key auxin transporter, PIN1. The native separation of Arabidopsis plasma membrane protein complexes identified several PIN1 co-purifying proteins. Among them, AZG1 was subsequently confirmed as a PIN1 interactor. Here, we show that, in Arabidopsis, AZG1 is a cytokinin (CK) import protein that co-localizes with and stabilizes PIN1, linking auxin and CK transport streams. AZG1 expression in LR primordia is sensitive to NaCl, and the frequency of LRs is AZG1-dependent under salt stress. This report therefore identifies a potential point for auxin:cytokinin crosstalk, which shapes RSA in response to NaCl
Beschreibung:	Date Completed 15.05.2023 Date Revised 15.05.2023 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.18879