The Intracellular Location of Abscisic Acid in Stressed and Non‐Stressed Leaf Tissue

The Intracellular Location of Abscisic Acid in Stressed and Non‐Stressed Leaf Tissue The intra‐cellular location of ABA was investigated in relation to its sites of synthesis. Chloroplasts were isolated from stressed and non‐stressed spinach leaves and their ABA content determined. Virtually all of the ABA from non‐stressed leaves was contained in the chloroplasts compared with only a small fraction of ABA isolated from stressed leaves. Chloroplasts prepared from turgid leaves and subsequently lysed in vitro retained most of their ABA and phaseic acid (PA) complement but this was removed with organic solvents. While the possibility of extra‐chloroplastic synthesis cannot be discounted the data indicate that stress‐induced ABA synthesis occurs in the chloroplast and that the ABA readily migrates from there to other parts of the plant. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiologia Plantarum Wiley

The Intracellular Location of Abscisic Acid in Stressed and Non‐Stressed Leaf Tissue

Physiologia Plantarum, Volume 40 (1) – May 1, 1977

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Publisher
Wiley
Copyright
Copyright © 1977 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0031-9317
eISSN
1399-3054
D.O.I.
10.1111/j.1399-3054.1977.tb01483.x
Publisher site
See Article on Publisher Site

Abstract

The intra‐cellular location of ABA was investigated in relation to its sites of synthesis. Chloroplasts were isolated from stressed and non‐stressed spinach leaves and their ABA content determined. Virtually all of the ABA from non‐stressed leaves was contained in the chloroplasts compared with only a small fraction of ABA isolated from stressed leaves. Chloroplasts prepared from turgid leaves and subsequently lysed in vitro retained most of their ABA and phaseic acid (PA) complement but this was removed with organic solvents. While the possibility of extra‐chloroplastic synthesis cannot be discounted the data indicate that stress‐induced ABA synthesis occurs in the chloroplast and that the ABA readily migrates from there to other parts of the plant.

Journal

Physiologia PlantarumWiley

Published: May 1, 1977

References

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