Subpopulations of chloroplast ribosomes change during photoregulated development of Zea mays leaves: ribosomal proteins L2, L21, and L29.

ABSTRACT: Seedlings grown in darkness, i.e., etiolated seedlings, lack chlorophyll and most other components of the photosynthetic apparatus. On illumination, the plastids become photosynthetically competent through the production of chlorophylls and proteins encoded by certain chloroplast and nuclear genes. There are two types of photosynthetic cells in leaves of the C4 plant maize: bundle sheath cells (BSC) and adjacent mesophyll cells (MC). Some proteins of the maize photosynthetic machinery are solely or preferentially localized in MC and others in BSC. A particular gene may be photoregulated up in one cell type and down in the other. Transcripts of the nuclear gene rpl29, encoding the chloroplast ribosomal protein L29, increase in abundance about 17-fold during light-induced maturation of plast

SUBMITTER: Zhao YY 

PROVIDER: S-EPMC17721 | biostudies-literature | 1999 Aug

REPOSITORIES: biostudies-literature