The regulation of light and protein synthesis inhibitors on gene expression of Rubisco and Rubisco subunit binding protein

Li, L.R.; Chen, G.Y.; Miao, Y.G.

Biotechnology in agriculture Proceedings of the First Asia Pacific Conference in Agricultural Biotechnology, Beijing, China, 20-24 August 1992: 217-220


Accession: 002526866

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Studies with rice seedlings have shown that light greatly stimulated the synthesis of ribulose-bisphosphate carboxylase (Rubisco) and the transcription of the large (rbcL) and small (rbcS) subunits in vivo. The rbcS was more sensitive to light than rbcL and the subunit binding protein (rbcBP). Cycloheximide and chloramphenicol inhibited the synthesis of translatable mRNA of rbcL, rbcS and rbcBP, and rbcS was again the most sensitive. These findings indicate that the nuclear rbcS gene acts as a regulator on the expression of the chloroplast rbcL gene, with intercommunication between the 2 organelles occurring.