Dpto. de Genética Molecular de Plantas, Centro Nacional de Biotecnología-CSIC, Campus de Cantoblanco, c/Darwin 3, 28049 Madrid, Spain.
Curr Opin Biotechnol. 2011 Apr;22(2):287-92. doi: 10.1016/j.copbio.2010.11.013. Epub 2010 Dec 16.
Photoperiod regulates many different developmental processes, including floral induction in several species and tuber formation in potato. Research in Arabidopsis led to the identification of FLOWERING LOCUS T (FT) as a main component of the florigen or mobile flowering promoting signal produced in the leaves. A similar mobile signal or tuberigen has been reported to induce tuber formation in potato, recent evidence obtained in our laboratory indicates that a potato homolog of FT encodes this signal. Flowering regulators, like CONSTANS and miR172, also play a role in tuberization, although it remains unclear whether these regulators function in identical pathways. Here, we highlight differential regulation of these genes in flowering and tuberization control and discuss on their possible tuberization-related function.
光周期调控着许多不同的发育过程，包括几种物种的花诱导和马铃薯的块茎形成。在拟南芥中的研究导致了开花时间基因（FT）的鉴定，它是叶片中产生的成花信号或移动开花促进信号的主要组成部分。类似的移动信号或块茎形成信号已被报道可以诱导马铃薯的块茎形成，我们实验室最近的证据表明，FT 的马铃薯同源物编码了这个信号。开花调节剂，如 CONSTANS 和 miR172，也在块茎形成中发挥作用，尽管这些调节剂是否在相同的途径中起作用尚不清楚。在这里，我们强调了这些基因在开花和块茎形成控制中的差异调控，并讨论了它们在块茎形成中的潜在功能。
