Universität zu Köln

Foetster, Sabrina, Schmidt, Lena K., Kopic, Eva, Anschuetz, Uta, Huang, Shouguang ORCID: 0000-0001-7007-0301, Schluecking, Kathrin, Koester, Philipp, Waadt, Rainer ORCID: 0000-0002-6772-3006, Larrieu, Antoine, Batistic, Oliver, Rodriguez, Pedro L. ORCID: 0000-0002-5886-9425, Grill, Erwin, Kudla, Joerg and Becker, Dirk ORCID: 0000-0003-0723-4160 (2019). Wounding-Induced Stomatal Closure Requires Jasmonate-Mediated Activation of GORK K+ Channels by a Ca2+ Sensor-Kinase CBL1-CIPK5 Complex. Dev. Cell, 48 (1). S. 87 - 106. CAMBRIDGE: CELL PRESS. ISSN 1878-1551

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Abstract

Guard cells integrate various hormone signals and environmental cues to balance plant gas exchange and transpiration. The wounding-associated hormone jasmonic acid (JA) and the drought hormone abscisic acid (ABA) both trigger stomatal closure. In contrast to ABA however, the molecular mechanisms of JA-induced stomatal closure have remained largely elusive. Here, we identify a fast signaling pathway for JA targeting the K+ efflux channel GORK. Wounding triggers both local and systemic stomatal closure by activation of the JA signaling cascade followed by GORK phosphorylation and activation through CBL1-CIPK5 Ca2+ sensor-kinase complexes. GORK activation strictly depends on plasma membrane targeting and Ca2+ binding of CBL1-CIPK5 complexes. Accordingly, in gork, cbl1, and cipk5 mutants, JA-induced stomatal closure is specifically abolished. The ABA-coreceptor ABI2 counteracts CBL1-CIPK5-dependent GORK activation. Hence, JA-induced Ca2+ signaling in response to biotic stress converges with the ABA-mediated drought stress pathway to facilitate GORK-mediated stomatal closure upon wounding.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Foetster, Sabrina UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt, Lena K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kopic, Eva UNSPECIFIED UNSPECIFIED UNSPECIFIED Anschuetz, Uta UNSPECIFIED UNSPECIFIED UNSPECIFIED Huang, Shouguang UNSPECIFIED orcid.org/0000-0001-7007-0301 UNSPECIFIED Schluecking, Kathrin UNSPECIFIED UNSPECIFIED UNSPECIFIED Koester, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Waadt, Rainer UNSPECIFIED orcid.org/0000-0002-6772-3006 UNSPECIFIED Larrieu, Antoine UNSPECIFIED UNSPECIFIED UNSPECIFIED Batistic, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez, Pedro L. UNSPECIFIED orcid.org/0000-0002-5886-9425 UNSPECIFIED Grill, Erwin UNSPECIFIED UNSPECIFIED UNSPECIFIED Kudla, Joerg UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, Dirk UNSPECIFIED orcid.org/0000-0003-0723-4160 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-159474
DOI:	10.1016/j.devcel.2018.11.014
Journal or Publication Title:	Dev. Cell
Volume:	48
Number:	1
Page Range:	S. 87 - 106
Date:	2019
Publisher:	CELL PRESS
Place of Publication:	CAMBRIDGE
ISSN:	1878-1551
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTERACTING PROTEIN-KINASES; ABSCISIC-ACID; ANION CHANNEL; CALCIUM SENSORS; PYR/PYL/RCAR RECEPTORS; POTASSIUM CHANNEL; GUARD-CELLS; ARABIDOPSIS; SLAC1; ABA Multiple languages Cell Biology; Developmental Biology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15947