Role of Abscisic Acid, Ethylene and Polyamines in Flooding Promoted Senescence of Tobacco Leaves
Resource
Journal of Plant Physiology, v.143, p.102-105
Journal
Journal of Plant Physiology
Journal Volume
v.143
Pages
102-105
Date Issued
1994
Date
1994
Author(s)
Abstract
The role of abscisic acid (ABA), ethylene and polyamines in leaf senescence of tobacco exposed to flooding was investigated. Senescence of tobacco leaves was followed by measuring the decrease of protein. Flooding significantly promoted senescence of tobacco leaves and resulted in a higher ABA content than the controls throughout the entire 4-day experimental duration. Ethylene production in flooding-treated leaves was much higher than that in control leaves during the first day of the experiment. Putrescine and spermidine, but not spermine, were present in tobacco leaves throughout the experimental duration. Flooded leaves had higher levels of putrescine and spermidine than untreated leaves. It is concluded that ethylene, but neither ABA nor polyamines, is possibly involved in the regulation of flooding-promoted senescence of tobacco leaves. © 1994, Gustav Fischer Verlag, Stuttgart. All rights reserved.
SDGs
Type
journal article