Functional conservation and divergence of FVE genes that control flowering time and cold response in rice and Arabidopsis.
Recent molecular and genetic studies in rice, a short-day plant, have elucidated both conservation and divergence of photoperiod pathway genes and their regulators. However, the biological roles of rice genes that act within the autonomous pathway are still largely unknown. In order to better understand the function of the autonomous pathway genes in rice, we conducted molecular genetic analyses of OsFVE, a rice gene homologous to Arabidopsis FVE. OsFVE was found to be ubiquitously expressed in vegetative and reproductive organs. Overexpression of OsFVE could rescue the flowering time phenotype of the Arabidopsis fve mutants by up-regulating expression of the SUPPRESSOR OF OVEREXPRESSION OF CO1 (SOC1) and down-regulating FLOWERING LOCUS C (FLC) expression. These results suggest that there may be a conserved function between OsFVE and FVE in the control of flowering time. However, OsFVE overexpression in the fve mutants did not rescue the flowering time phenotype in in relation to the response to intermittent cold treatment.
Baek
Il-Sun
IS
Plant Signaling Network Research Center, School of Life Sciences and Biotechnology, Korea University, Seoul, Korea.
Park
Hyo-Young
HY
You
Min Kyoung
MK
Lee
Jeong Hwan
JH
Kim
Jeong-Kook
JK
D017360:Arabidopsis / Q000235:genetics / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D003080:Cold Temperature; D017124:Conserved Sequence; D035264:Flowers / Q000235:genetics* / Q000502:physiology; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D005816:Genetic Complementation Test; D014644:Genetic Variation; D009154:Mutation / Q000235:genetics; D012275:Oryza / Q000235:genetics / Q000502:physiology*; D010641:Phenotype; D030821:Plants, Genetically Modified; D013997:Time Factors; D015854:Up-Regulation
D029681:Arabidopsis Proteins