Molecular mechanism of flowering that controls the continuous fruit-bearing behavior of fig (Ficus carica L.)

无花果树一年的坐果期长，与许多其他果树不同，它有一种特殊的结果习惯。如果这种结果行为的背景变得清晰，可能会导致开花控制新机制的阐明，并可应用于其他作物的花期控制。然而，细节尚不清楚。在本研究中，我们对开花相关基因进行了分析，包括无花果的FT基因FcFT1作为开花基因候选，试图寻找FcFT1上游调控因子并阐明其关系。因此，我们认为光敏色素B基因转座子样序列的插入突变可能通过FcFT1的光周期敏感性丧失参与了长花无花果的形成。

Fig tree has a long fruit setting period in the one year and a peculiar bearing habit unlike the many other fruit trees. If background of such bearing behavior becomes apparent, it may lead to the elucidation of flowering control novel mechanism and it can be applied to the flowering period control in other crops. However, the details are not understood. In this study, we performed the analysis on the flowering-related genes, including a fig's FT gene, FcFT1, as the florigen gene candidate, attempted to search FcFT1 upstream regulator and elucidate the relationship. As a result, we suggested that insertional mutagenesis of transposon-like sequence in phytochrome B gene, may be involved in long flowering fig through the photoperiod sensitivity loss of FcFT1.