Role of SVP in the control of flowering time by ambient temperature in Arabidopsis.
Plants must perceive and rapidly respond to changes in ambient temperature for their successful reproduction. Here we demonstrate that Arabidopsis SHORT VEGETATIVE PHASE (SVP) plays an important role in the response of plants to ambient temperature changes. The loss of SVP function elicited insensitivity to ambient temperature changes. SVP mediates the temperature-dependent functions of FCA and FVE within the thermosensory pathway. SVP controls flowering time by negatively regulating the expression of a floral integrator, FLOWERING LOCUS T (FT), via direct binding to the CArG motifs in the FT sequence. We propose that this is one of the molecular mechanisms that modulate flowering time under fluctuating temperature conditions.
Lee
Jeong Hwan
JH
Plant Signaling Network Research Center, School of Life Sciences and Biotechnology, Korea University, Seoul, 136-701, Korea.
Yoo
Seong Jeon
SJ
Park
Soo Hyun
SH
Hwang
Ildoo
I
Lee
Jong Seob
JS
Ahn
Ji Hoon
JH
D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D002352:Carrier Proteins / Q000235:genetics; D035264:Flowers / Q000235:genetics* / Q000254:growth & development; D018506:Gene Expression Regulation, Plant; D016601:RNA-Binding Proteins / Q000235:genetics; D013696:Temperature; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism / Q000502:physiology*
D029681:Arabidopsis Proteins; D002352:Carrier Proteins; C106535:Flowering time control protein FCA, Arabidopsis; C116635:MSI4 protein, Arabidopsis; D016601:RNA-Binding Proteins; C407549:SVP protein, Arabidopsis; D014157:Transcription Factors