Department of Biological Sciences; University of North Texas; Denton, TX USA.
Plant Signal Behav. 2013 Apr;8(4):e23602. doi: 10.4161/psb.23602. Epub 2013 Jan 18.
Flowering marks the change from indeterminate to determinate plant growth, and this developmental transition involves the activity of the Arabidopsis FLOWERING LOCUS T (FT) gene product and its orthologs. We demonstrated that when FT is ectopically expressed from a viral vector in cotton, a process referred to as virus induced flowering (VIF), it uncouples flowering from photoperiodic regulation and promotes determinate growth in aerial organs. The accelerated switch to determinate growth affected cotton floral buds and sympodial growth, but did not disrupt floral organogenesis. These results can be interpreted in the context of the balance model, which argues that the balance of indeterminate and determinate growth is influenced by the relative abundance of indeterminate and determinate factors in the growing apices. These results emphasize the expanding role of FT in affecting general determinate growth.
开花标志着植物生长从不定向到定向的转变，这一发育转变涉及拟南芥开花时间（FT）基因产物及其同源物的活性。我们证明，当 FT 从病毒载体中外源表达在棉花中时，这个过程被称为病毒诱导开花（VIF），它使开花与光周期调控解偶联，并促进地上器官的定向生长。向定向生长的加速转变影响了棉花花芽和合轴生长，但没有破坏花器官的发生。这些结果可以用平衡模型来解释，该模型认为不定向和定向生长的平衡受生长顶端不定向和定向因子的相对丰度的影响。这些结果强调了 FT 在影响一般定向生长中的作用不断扩大。
