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Changes induced on the prolamellar body of pea pisum sativum seedlings by white red and blue low intensity light


, : Changes induced on the prolamellar body of pea pisum sativum seedlings by white red and blue low intensity light. Protoplasma 131(2): 166-173

We analyzed transformation, recrystallization, splitting and dispersion of prolamellar bodies during chloroplast development in pea seedlings illuminated by white, red and blue light of low intensity. With the help of a stereometric method we determined that there was a significant increase of prolamellar body number and a sharp decrease of their volume in differentiating chloroplast even in the first 2 hours of illumination. Decrease of prolamellar body dimensions was due both to gradual dispersion of its elements into primary thylakoids (indicated by the decrease of total volume of prolamellar bodies in plastid) and to splitting of prolamellar bodies (indicated by the increase of number of prolamellar bodies in plastid). Red light was more effective in transformation, splitting and dispersion of prolamellar bodies than blue light during the first 8-12 hours. Longer treatment with blue light had a stronger influence on these processes and on complete recrystallization than other light treatments.

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