Molecular genetic studies on flowering control by VOZ1 and VOZ2 in Arabidopsis

植物营养生长向生殖生长的转变受包括日长和光照质量在内的各种环境因素的调节。两个拟南芥基因、一个维管束植物锌FINGER1和VOZ2介导了PhyB依赖的开花调控。突变互补分析表明，在维管束中表达的VOZ1和VOZ2在细胞核内起转录调节作用。遗传学和分子生物学研究表明，VOZ1和VOZ2通过非春化途径下调FLC及其近缘同源基因MAF1到MAF5，从而促进生长期向开花的转变。

The phase transition of vegetative to reproductive growth in plants is regulated by various environmental factors including day length and light quality. Two Arabidopsis thaliana genes, VASCULAR PLANT ONE ZINC FINGER1 and VOZ2 mediated phyB-dependent flowering regulation. By mutant complementation assays, VOZ1 and VOZ2 expressed in vascular bundles functioned as transcriptional regulators in nucleus. Genetic and molecular researches suggested that VOZ1 and VOZ2 promote growth-phase transition to flowering by down-regulating FLC and its closely related homologs MAF1 to MAF5 by a pathway that is independent to vernalization pathway.