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Summary: RESEARCH COMMUNICATION
A PHD finger protein involved
in both the vernalization
and photoperiod pathways
in Arabidopsis
Sibum Sung,1
Robert J. Schmitz,1,2
and Richard M. Amasino1,2,3
1
Department of Biochemistry, University
of Wisconsin-Madison, Madison, Wisconsin 53706, USA;
2
Laboratory of Genetics, University of Wisconsin-Madison,
Madison, Wisconsin 53706, USA
The proper timing of flowering is critical for successful
reproduction. The perception of the seasonal cues of day-
length changes and exposure to cold influences flowering
time in many plant species through the photoperiod and
vernalization pathways, respectively. Here we show that
a plant homeodomain (PHD) finger-containing protein,
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