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Circadian rhythm and phytochrome control of LHC‐I gene transcription
Author(s) -
Tavladoraki Paraskevi,
Argyroudi-Akoyunoglou Joan
Publication year - 1989
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(89)81111-1
Subject(s) - phytochrome , circadian rhythm , etiolation , chloroplast , messenger rna , biology , gene expression , microbiology and biotechnology , photoperiodism , circadian clock , far red , oscillating gene , biophysics , chemistry , gene , botany , bacterial circadian rhythms , red light , genetics , biochemistry , neuroscience , enzyme
A small amount of translatable mRNA for a nuclear‐coded precursor apoprotein of the LHC‐I (light‐harvesting complex of photosystem I) with a molecular mass of 26 kDa is present in etiolated bean leaves. The expression of this protein is phytochrome‐controlled and follows circadian oscillations, for the appearance of which a red‐light pulse is sufficient. The rhythmical oscillations persist for many hours in the dark following the red‐light pulse or in continuous white light. The similarity of this rhythm in the light‐induced accumulation of LHC‐I mRNA with that of LHC‐II mRNA [(1989) Plant Physiol. 90, 665] suggests that the same oscillator may govern the expression of all chloroplast protein genes regulated by light.