Does abscisic acid influence proline accumulation in stressed leaves?
- 1 January 1978
- journal article
- research article
- Published by Springer Nature in Planta
- Vol. 143 (1), 85-88
- https://doi.org/10.1007/bf00389056
Abstract
Root treatments of barley (Hordeum distichum L.) plants with 10-7 to 10-4 M abscisic acid (ABA) caused an increase in proline content, especially at higher concentrations, within 2–3 h. Even 3 h after the removal of ABA from the medium the plants continued to accumulate proline. The higher the concentration of the ABA, the higher was the proline level at 6 h. When the highest ABA concentration, 10-4 M, was tested with polyethylene glycol (PEG) (-5.0 bars) in the medium, the ABA treatment resulted in a higher proline content than in control plants. The treatments “PEG alone” and “PEG + ABA” resulted in heavy accumulation of proline, especially, 3 h after releasing the plants from the stress. The proline content in PEG+ABA-treated plants was always higher than plants treated with PGE or ABA alone. In peas (Pisum sativum L. cv Alaska) the same trend occurred although to a lesser degree. These findings indicate an influence of ABA on proline accumulation in water-stressed plants.This publication has 22 references indexed in Scilit:
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