Polysome formation induced by light inPinus thunbergiiseed embryos

摘要

Ribosome patterns in embryos of light-requiring pine seeds during prolonged dark imbibition and after red light irradiation were studied. Ribosomes isolated from dry embryos were essentially homogeneous monomer particles. During a dark imbibition period as long as 42 days, no appreciable changes in ribosomal patterns were observed. However, a decrease in monomer ribosomes and distinct polysome formation were detected within 24 hr after a brief red light had been given at any point in the dark imbibition period.