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. 1986 Jun;83(12):4287–4291. doi: 10.1073/pnas.83.12.4287

Light quality regulates expression of chloroplast genes and assembly of photosynthetic membrane complexes

Richard E Glick *, Steven W McCauley *, Wilhelm Gruissem †, Anastasios Melis *,‡
PMCID: PMC323717  PMID: 16593711

Abstract

The concentrations of photosystem I (PSI) and photosystem II (PSII) reaction centers and the level of chloroplast reaction center gene transcripts were determined in pea plants grown under different light-quality regimes. In plants grown in light primarily absorbed by PSI (“red” light), the PSII/PSI reaction center ratio was 2-fold greater than that in plants grown in PSII-sensitizing (“yellow”) light. In addition, the ratio of a PSII gene (psbB) transcript to a PSI gene (psaA) transcript was 2.6 times greater in red-grown plants relative to yellow-grown plants. Thus, a differential reaction-center concentration in the thylakoid membrane was accompanied by a differential expression of reaction center genes, suggesting that the synthesis of chloroplast membrane complexes and the assembly of photosystems are regulated by light quality at the transcriptional and/or post-transcriptional level.

Keywords: photosynthesis, thylakoid membrane, reaction center, DNA transcription, chloroplast adaptation

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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