J 2022

ABP1-TMK auxin perception for global phosphorylation and auxin canalization

FRIML, Jiri, Michelle GALLEI, Zuzana GELOVA, Alexander JOHNSON, Ewa MAZUR et. al.

Basic information

Original name

ABP1-TMK auxin perception for global phosphorylation and auxin canalization

Authors

FRIML, Jiri, Michelle GALLEI, Zuzana GELOVA, Alexander JOHNSON, Ewa MAZUR, Aline MONZER, Lesia RODRIGUEZ, Mark ROOSJEN, Inge VERSTRAETEN, Branka D ZIVANOVIC, Minxia ZOU, Lukas FIEDLER, Caterina GIANNINI, Peter GRONES, Monika HRTYAN, Walter A KAUFMANN, Andre KUHN, Madhumitha NARASIMHAN, Marek RANDUCH, Nikola RÝDZA (703 Slovakia, guarantor, belonging to the institution), Koji TAKAHASHI, Shutang TAN, Anastasia TEPLOVA, Toshinori KINOSHITA, Dolf WEIJERS and Hana RAKUSOVA

Edition

Nature, LONDON, NATURE PUBLISHING GROUP, 2022, 0028-0836

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10608 Biochemistry and molecular biology

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 64.800

RIV identification code

RIV/00216224:14740/22:00128524

Organization unit

Central European Institute of Technology

UT WoS

000851357500002

Keywords in English

BINDING PROTEIN-1ARABIDOPSISTRANSPORTGRADIENTSCOMPLEXMODULEGROWTH

Tags

International impact, Reviewed
Změněno: 8/10/2024 10:30, Ing. Martina Blahová

Abstract

V originále

The phytohormone auxin triggers transcriptional reprogramming through a well-characterized perception machinery in the nucleus. By contrast, mechanisms that underlie fast effects of auxin, such as the regulation of ion fluxes, rapid phosphorylation of proteins or auxin feedback on its transport, remain unclear(1-3). Whether auxin-binding protein 1 (ABP1) is an auxin receptor has been a source of debate for decades(1,4). Here we show that a fraction of Arabidopsis thaliana ABP1 is secreted and binds auxin specifically at an acidic pH that is typical of the apoplast. ABP1 and its plasma-membrane-localized partner, transmembrane kinase 1 (TMK1), are required for the auxin-induced ultrafast global phospho-response and for downstream processes that include the activation of H+-ATPase and accelerated cytoplasmic streaming. abp1 and tmk mutants cannot establish auxin-transporting channels and show defective auxin-induced vasculature formation and regeneration. An ABP1(M2X) variant that lacks the capacity to bind auxin is unable to complement these defects in abp1 mutants. These data indicate that ABP1 is the auxin receptor for TMK1-based cell-surface signalling, which mediates the global phospho-response and auxin canalization.

Links

90129, large research infrastructures
Name: Czech-BioImaging II