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Uprooting an abscisic acid paradigm: Shoots are the primary source


McAdam, SAM and Manzi, M and Ross, JJ and Brodribb, TJ and Gomez-Cadenas, A, Uprooting an abscisic acid paradigm: Shoots are the primary source, Plant Signaling & Behavior, 11, (6) Article e1169359. ISSN 1559-2316 (2016) [Contribution to Refereed Journal]

Copyright Statement

Copyright 2016 Taylor & Francis Group, LLC

DOI: doi:10.1080/15592324.2016.1169359


In the past, a conventional wisdom has been that abscisic acid (ABA) is a xylem-transported hormone that is synthesized in the roots, while acting in the shoot to close stomata in response to a decrease in plant water status. Now, however, evidence from two studies, which we have conducted independently, challenges this root-sourced ABA paradigm. We show that foliage-derived ABA has a major influence over root development and that leaves are the predominant location for ABA biosynthesis during drought stress.

Item Details

Item Type:Contribution to Refereed Journal
Keywords:abscisic acid (ABA), root growth, shoot to root signaling, stomata, water stress
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:McAdam, SAM (Dr Scott McAdam)
UTAS Author:Ross, JJ (Associate Professor John Ross)
UTAS Author:Brodribb, TJ (Professor Tim Brodribb)
ID Code:112468
Year Published:2016
Web of Science® Times Cited:36
Deposited By:Plant Science
Deposited On:2016-11-11
Last Modified:2017-08-30

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