FLOWERING LOCUS T (FT) like genes are crucial regulators (both positive and negative) of flowering in angiosperms. We identified two FT homologs in Chenopodium rubrum, a short-day species used as a model plant for the studies of photoperiodic flower induction. We found that CrFTL1 gene was highly inducible by a 12-h dark period, which in turn induced flowering. On the other hand, photoperiodic treatments that did not induce flowering (short dark periods, or a permissive darkness interrupted by a night break) caused only a slight increase in CrFTL1 mRNA level. We demonstrated diurnal oscillation of CrFTL1 expression with peaks in the middle of a light period. The oscillation persisted under constant darkness. Unlike FT homologs in rice and Pharbitis, the CrFTL1 expression under constant darkness was very low. The CrFTL2 gene showed constitutive expression. We suggest that the CrFTL1 gene may play a role as a floral regulator, but the function of CrFTL2 remains unknown.

Institute of Experimental Botany vvi Academy of Sciences of the Czech Republic Prague Czech Republic

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Science. 1999 Dec 3;286(5446):1962-5 PubMed

Science. 2007 May 18;316(5827):1033-6 PubMed

Science. 1997 Jan 3;275(5296):80-3 PubMed

Plant Cell. 2007 Oct;19(10):2988-3000 PubMed

Nature. 2003 Apr 17;422(6933):719-22 PubMed

Plant Mol Biol. 2003 Aug;52(6):1215-22 PubMed

Plant Physiol Biochem. 2004 Jul-Aug;42(7-8):573-8 PubMed

Science. 1999 Dec 3;286(5446):1960-2 PubMed

Mol Cells. 2004 Feb 29;17(1):95-101 PubMed

Genes Dev. 2004 Apr 15;18(8):926-36 PubMed

Eur J Biochem. 1987 Jul 15;166(2):333-8 PubMed

Genetics. 2000 Jan;154(1):459-73 PubMed

Plant Cell. 2000 Dec;12(12):2473-2484 PubMed

Curr Biol. 2007 Jun 19;17(12):1050-4 PubMed

Plant Mol Biol. 2002 Aug;49(6):567-77 PubMed

Plant Cell. 2006 Aug;18(8):1846-61 PubMed

Nature. 2001 Apr 26;410(6832):1116-20 PubMed

Science. 2005 Aug 12;309(5737):1056-9 PubMed

Plant Cell Physiol. 2005 Aug;46(8):1175-89 PubMed

Nat Genet. 2003 Feb;33(2):168-71 PubMed

Biotechniques. 2006 Feb;40(2):187-9 PubMed

Genes Cells. 2001 Apr;6(4):327-36 PubMed

Cell. 1995 Mar 24;80(6):847-57 PubMed

Plant Physiol. 2005 Apr;137(4):1420-34 PubMed

Plant Cell. 2005 Dec;17(12):3326-36 PubMed

Plant Cell Physiol. 2002 Oct;43(10):1096-105 PubMed

Adv Genet. 2002;46:451-83 PubMed

EMBO J. 2006 Feb 8;25(3):605-14 PubMed

Science. 2000 Jun 2;288(5471):1613-6 PubMed

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