Format

Send to

Choose Destination
Curr Opin Plant Biol. 2014 Oct;21:120-127. doi: 10.1016/j.pbi.2014.07.006. Epub 2014 Jul 27.

Flowering responses to seasonal cues: what's new?

Author information

1
Max Planck Institute for Plant Breeding Research, D-50829 Cologne, Germany.
2
Max Planck Institute for Plant Breeding Research, D-50829 Cologne, Germany. Electronic address: coupland@mpipz.mpg.de.

Abstract

Seasonal cues of day length or winter cold trigger flowering of many species. Forward and reverse genetic approaches are revealing the mechanisms by which these responses are conferred. Homologues of the Arabidopsis thaliana protein FLOWERING LOCUS T (FT) are widely used to mediate seasonal responses to day length and act as graft-transmissible promoters or repressors of flowering. Winter cold in A. thaliana promotes flowering by repressing transcription of the MADS box gene FLOWERING LOCUS C (FLC). The mechanism by which this occurs involves a complex interplay of different forms of long noncoding RNAs induced at the FLC locus during cold and changes in the chromatin of FLC. In perennial relatives of A. thaliana, flowering also requires the age-dependent downregulation of miRNA156 before winter.

PMID:
25072635
DOI:
10.1016/j.pbi.2014.07.006
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center