Plant Physiol. Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 89:776-782 (1989)
© 1989 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (27)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Stayton, M. M.
Right arrow Articles by Dunsmuir, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Stayton, M. M.
Right arrow Articles by Dunsmuir, P.
Agricola
Right arrow Articles by Stayton, M. M.
Right arrow Articles by Dunsmuir, P.
Molecular Biology and Gene Regulation

Photosynthetic Genes of Petunia (Mitchell) Are Differentially Expressed during the Diurnal Cycle

Mark M. Stayton1, Paul Brosio and Pamela Dunsmuir

Advanced Genetic Sciences, Inc., 6701 San Pablo Avenue, Oakland, California 94608

The petunia (Petunia [Mitchell]) chloroplast proteins, the chlorophyll a/b-binding (Cab) proteins, and the small subunit of ribulose bisphosphate carboxylase (RbcS) are encoded by nuclear genes that are expressed in a light-dependent manner. The steady-state concentrations of five cab mRNAs vary with a dramatic circadian rhythm in plants grown under a constant diurnal cycle (10 hours light, 14 hours dark). cab mRNA levels reach their maximum during the light period, but begin to drop prior to the dark period. These RNAs fall to their minimum concentration during the dark period and then begin to increase again in anticipation of the light. Within this general pattern, there are variations in expression among specific classes of cab genes. The light harvesting complex of photosystem II LHCII-type 1 cab mRNAs rise to a well-defined maximum at 2 hours prior to the dark period. All but one of these genes are expressed in anticipation of the light period. The LHCII type 2 cab mRNA and the LHC of photosystem I cab mRNA are expressed at more constant levels throughout the light period. The expression of these genes anticipates the light more than does the expression of the LHCII type 1 genes. The steady state mRNA levels for the petunia rbcS genes show no significant diurnal fluctuation.

1 Present address: Department of Molecular Biology, University of Wyoming, Laramie, WY 82071.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1989 by the American Society of Plant Biologists