Benzyladenine-induced chlorophyll formation in etiolated cucumber cotyledons: differential responses of delta -aminolevulinic acid formation to inhibitors of RNA and protein synthesis in darkness and then after illumination

Naito, K.; Takahashi, T.; Endo, Y.; Shimizu, S.

Zeitschrift fur Pflanzenphysiologie 97(4): 309-316


Accession: 000828284

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BA increased the rate of delta -aminolaevulinic acid (ALA) accumulation in laevulinic-acid-treated etiolated cucumber cotyledons after 2-4 h in darkness. When RNA- and protein-synthesis inhibitors were added in darkness BA appeared to activate already present m-RNA but not to enhance the synthesis of new m-RNA. After illumination ALA accumulated more rapidly than in darkness and its accumulation was stimulated by BA. The effect of the RNA- and protein- synthesis inhibitors after illumination showed that in this situation synthesis of new m-RNA rather than m-RNA activation was enhanced by ALA accumulation and chlorophyll synthesis.