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The Plant Cell, Vol. 13, 14271436, June 2001, www.plantcell.org 2001 American Society of Plant Physiologists FPA, a Gene Involved in Floral Induction in Arabidopsis,
 

Summary: The Plant Cell, Vol. 13, 1427­1436, June 2001, www.plantcell.org © 2001 American Society of Plant Physiologists
FPA, a Gene Involved in Floral Induction in Arabidopsis,
Encodes a Protein Containing RNA-Recognition Motifs
Fritz M. Schomburg,a David A. Patton,b David W. Meinke,c and Richard M. Amasinoa,1
a Department of Biochemistry, University of Wisconsin­Madison, Madison, Wisconsin 53706
b Syngenta, 3054 Cornwallis Road, Research Triangle Park, North Carolina 27709
c Department of Botany, Oklahoma State University, Stillwater, Oklahoma 74078
FPA is a gene that regulates flowering time in Arabidopsis via a pathway that is independent of daylength (the autono-
mous pathway). Mutations in FPA result in extremely delayed flowering. FPA was identified by means of positional
cloning. The predicted FPA protein contains three RNA recognition motifs in the N-terminal region. FPA is expressed
most strongly in developing tissues, similar to the expression of FCA and LUMINIDEPENDENS, two components of the
autonomous pathway previously identified. Overexpression of FPA in Arabidopsis causes early flowering in noninduc-
tive short days and creates plants that exhibit a more day-neutral flowering behavior.
INTRODUCTION
To accurately gauge when to flower, plants use environ-
mental cues such as daylength and temperature as well
as developmental (often called autonomous) controls to co-
ordinate synchronous flower production (Vince-Prue, 1975).
As a result of physiological and genetic studies in Arabidop-
sis, many loci that specifically regulate flowering time have

  

Source: Amasino, Richard M. - Department of Biochemistry, University of Wisconsin at Madison

 

Collections: Biology and Medicine