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Plumley FG, Schmidt GW. Nitrogen-dependent regulation of photosynthetic gene expression. Proc Natl Acad Sci U S A. 1989;86(8):2678-82doi: 10.1073/pnas.86.8.2678.
Plumley, F. G., & Schmidt, G. W. (1989). Nitrogen-dependent regulation of photosynthetic gene expression. Proceedings of the National Academy of Sciences of the United States of America, 86(8), 2678-82. https://doi.org/10.1073/pnas.86.8.2678
Plumley, F G, and Schmidt, G W. "Nitrogen-dependent regulation of photosynthetic gene expression." Proceedings of the National Academy of Sciences of the United States of America vol. 86,8 (1989): 2678-82. doi: https://doi.org/10.1073/pnas.86.8.2678
Plumley FG, Schmidt GW. Nitrogen-dependent regulation of photosynthetic gene expression. Proc Natl Acad Sci U S A. 1989 Apr;86(8):2678-82. doi: 10.1073/pnas.86.8.2678. PMID: 16594026; PMCID: PMC286981.
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Proc Natl Acad Sci U S A. 1989 Apr;86(8):2678-82. doi: 10.1073/pnas.86.8.2678.

Nitrogen-dependent regulation of photosynthetic gene expression.

Proceedings of the National Academy of Sciences of the United States of America

F G Plumley, G W Schmidt

Affiliations

  1. Botany Department, University of Georgia, Athens, GA 30602.

PMID: 16594026 PMCID: PMC286981 DOI: 10.1073/pnas.86.8.2678

Abstract

Nitrogen-limited Chlamydomonas reinhardtii is chlorotic and very deficient in chlorophyll a/b light-harvesting complexes (LHC). Rates of synthesis of photosynthetic proteins, but especially the LHC apoproteins, are reduced 10- to 40-fold. Moderately high levels of chloroplast transcripts accumulate in nitrogen-limited cells, and there is a correlation between chloroplast DNA levels and chloroplast mRNA abundance. In contrast, nuclear transcripts encoding LHCII and ribulose 1,5-bisphosphate carboxylase small subunits are markedly reduced. Thus, nitrogen availability affects chloroplast protein synthesis by inhibition of translation and, to a lesser extent, chloroplast DNA amplification. Regulation of nuclear-encoded photosynthetic proteins by nitrogen is achieved through mechanisms affecting transcription and/or mRNA stability.

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