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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, A
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.

History

Publication title

Plant Signaling & Behavior

Volume

11

Issue

6

Article number

e1169359

Number

e1169359

Pagination

1-2

ISSN

1559-2316

Department/School

School of Natural Sciences

Publisher

Taylor & Francis Inc

Place of publication

United States of America

Rights statement

Copyright 2016 Taylor & Francis Group, LLC

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the environmental sciences

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