Plant Physiol. Drug Metab Dispos
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on January 5, 2007; 10.1104/pp.106.093948

OPEN ACCESS ARTICLE
This Article
Free via Open Access: OA
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrowOA All Versions of this Article:
143/3/1429    most recent
pp.106.093948v1
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 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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Rymen, B.
Right arrow Articles by Beemster, G. T.S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rymen, B.
Right arrow Articles by Beemster, G. T.S.
Agricola
Right arrow Articles by Rymen, B.
Right arrow Articles by Beemster, G. T.S.

Received November 30, 2006
Accepted December 12, 2006

Cold Nights Impair Leaf Growth and Cell Cycle Progression in Maize Through Transcriptional Changes of Cell Cycle Genes

Bart Rymen , Fabio Fiorani , Fatma Kartal , Klaas Vandepoele , Dirk Inzé *, and Gerrit T.S. Beemster

Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology, Ghent University, Technologiepark 927, B-9052 Gent, Belgium

* Corresponding author; email: dirk.inze{at}psb.ugent.be.

Low temperature inhibits the growth of maize (Zea mays) seedlings and limits yield under field conditions. To study the mechanism of cold-induced growth retardation, we exposed maize B73 seedlings to low night temperature (25/4oC; d/n) from germination until the completion of leaf four expansion. This treatment resulted in a 20% reduction in final leaf size compared to control conditions (25/18oC; d/n). A kinematic analysis of leaf growth rates in control and cold-treated leaves during daytime showed that cold nights affected both cell cycle time (+65%) and cell production (-22%). In contrast, the size of mature epidermal cells was unaffected. To analyze the effect on cell cycle progression at the molecular level, we identified through a bioinformatics approach a set of 43 cell cycle genes and analyzed their expression in proliferating, expanding and mature cells of leaves exposed to either control or cold nights. This analysis showed that: (i) the majority of cell cycle genes had a consistent proliferation-specific expression pattern; (ii) the increased cell cycle time in the basal meristem of leaves exposed to cold nights was associated with differential expression of cell cycle inhibitors and with the concomitant down-regulation of positive regulators of cell division.




This article has been cited by other articles:


Home page
 ANN BOT (LOND)Home page
S. U. Bhosale, B. Rymen, G. T. S. Beemster, A. E. Melchinger, and J. C. Reif
Chilling Tolerance of Central European Maize Lines and their Factorial Crosses
Ann. Bot., November 1, 2007; 100(6): 1315 - 1321.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 2007 by the American Society of Plant Biologists