Abstract
Abstract Genetic studies on the floral transition in Arabidopsis have indicated that there are more than 20 genes involved in regulating the timing of the switch between vegetative and reproductive growth. This review focuses on three genes that play a critical role in flowering, LUMINIDEPENDENS , FRIGIDA and FLC . The LUMINIDEPENDENS gene is involved in constitutive floral promotion, and encodes a novel nuclear protein. The FRIGIDA and FLC genes, in contrast, act as constitutive floral inhibitors. Further molecular analyses of these genes as well as other genes involved in the floral transition should help elucidate this seemingly complex pathway.
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