Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
Plant Signal Behav. 2011 May;6(5):697-9. doi: 10.4161/psb.6.5.14979. Epub 2011 May 1.
The final shape of shoot lateral organs, namely, leaves and flowers, is determined by coordinated growth after the initiation of primordia from shoot meristems in seed plants. This coordination is achieved by the complex action of many transcription factors, which include the TEOSINTE BRANCHED1, CYCLOIDEA, and PCF (TCP) family. We have recently reported that CINCINNATA-like (CIN-like) TCP genes act dose-dependently to regulate the flat and smooth morphology of leaves in Arabidopsis thaliana. In contrast, the roles of CIN-like TCP genes in flower development are poorly understood. In this report, using multiple tcp mutants and transgenic plants in which the activity of CIN-like TCP transcription factors is dominantly inhibited, we found that these TCPs regulate the smooth and flat morphology of petals. Based on these findings, we discuss a possible strategy to generate a fringed morphology in floricultural plants.
茎侧器官（即叶和花）的最终形状是由种子植物的茎分生组织起始的原基发育后的协调生长决定的。这种协调是通过许多转录因子的复杂作用实现的，其中包括 TEOSINTE BRANCHED1、CYCLOIDEA 和 PCF（TCP）家族。我们最近报道称，CINCINNATA-like（CIN-like）TCP 基因以剂量依赖的方式作用，以调节拟南芥中叶片的扁平平滑形态。相比之下，CIN-like TCP 基因在花发育中的作用知之甚少。在本报告中，我们使用多个 tcp 突变体和转基因植物，其中 CIN-like TCP 转录因子的活性被显性抑制，发现这些 TCP 调节花瓣的平滑和平坦形态。基于这些发现，我们讨论了在花卉植物中产生羽状形态的可能策略。
