BR-INSENSITIVE1 regulates hydrotropic response by interacting with plasma membrane H+-ATPases in Arabidopsis
Journal
Plant Signaling and Behavior
Journal Volume
13
Journal Issue
8
ISSN
15592316
Date Issued
2018-08-03
Author(s)
Abstract
Arabidopsis roots sense the moisture gradient in soils and grow toward an area with higher water potential–a process called hydrotropism. Our previous study has shown that the apoplastic proton extrusion in root tips is influenced by brassinosteroids (BRs) receptor BR-INSENSITIVE1 (BRI1) and is crucial for hydrotropic response in Arabidopsis. Here we show that BRI1 interacts directly not only with Arabidopsis plasma membrane H+-ATPase 2 (AHA2) but also with Arabidopsis plasma membrane H+-ATPase 7 (AHA7). Therefore, BRI1 may affect hydrotropic response via regulating the activities of AHA2 and AHA7. © 2018, © 2018 Taylor & Francis Group, LLC.
Subjects
Arabidopsis root
BR-INSENSITIVE1
hydrotropic response
plasma membrane H<sup>+</sup>-ATPase
proton efflux
Publisher
Taylor and Francis Inc.
Description
Article Number: e1486147
Type
journal article