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Uprooting an abscisic acid paradigm: Shoots are the primary source
journal contribution
posted on 2023-05-22, 02:56 authored by McAdam, SAM, Manzi, M, John RossJohn Ross, Timothy BrodribbTimothy Brodribb, Gomez-Cadenas, AIn 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.
History
Publication title
Plant Signaling & BehaviorVolume
11Issue
6Article number
e1169359Number
e1169359Pagination
1-2ISSN
1559-2316Department/School
School of Natural SciencesPublisher
Taylor & Francis IncPlace of publication
United States of AmericaRights statement
Copyright 2016 Taylor & Francis Group, LLCRepository Status
- Restricted