Effect of irradiation and growth regulators on degradation processes in detached soybean leaves

Abstract

Changes in soluble protein profile and chlorophyll (Chl) content in detached soybean leaves incubated in darkness or light were delayed by application of benzyladenine or indole-3-acetic acid and enhanced by abscisic acid. The degradation in light differed significantly from the degradation in darkness. Chl and proteins were lost at a higher rate in darkness than in light.

Abscisic acid substantially inhibits senescence of cucumber plants (Cucumis sativus) grown under low nitrogen conditions

“…When ABA was applied to detached leaves, chlorophyll degradation was greatly promoted (Gepstein and Thimann, 1980;Annamalainathan et al, 1996;Ferrante et al, 2004); however, ABA is less effective with regard to plant senescence and chlorophyll degradation in intact plants. Chlorophyll contents were slightly different between the control and ABA-applied plants under sufficient-N conditions (Figs.…”