Effect of Polyamines on Chlorophyll and Protein Contents, Photochemical Activity, and Energy Transfer in Detached Wheat Leaves during Dark Incubation

Spermine as compared to putrescine or spermidine retarded the loss of chlorophyll and protein contents to a greater extent in wheat primary leaves during dark incubation. Activities of whole chain electron transport, photosystem (PS) 1 and PS2, and absorbed excitation energy distribution in favour of PS 1 were protected by these amines in valency dependent manner during 72-h dark incubation.