Susila Hendry, Purwestri Yekti Asih
Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea.
Research Center for Biotechnology, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
Plants (Basel). 2023 Jan 6;12(2):264. doi: 10.3390/plants12020264.
Tubers and tuberous root crops are essential carbohydrate sources and staple foods for humans, second only to cereals. The developmental phase transition, including floral initiation and underground storage organ formation, is controlled by complex signaling processes involving the integration of environmental and endogenous cues. FLOWERING LOCUS T (FT) and TERMINAL FLOWER 1/CENTRORADIALIS (TFL1/CEN), members of the phosphatidylethanolamine-binding protein (PEBP) gene family, play a central role in this developmental phase transition process. FT and FT-like proteins have a function to promote developmental phase transition, while TFL1/CEN act oppositely. The balance between FT and TFL1/CEN is critical to ensure a successful plant life cycle. Here, we present a summarized review of the role and signaling network of PEBP in floral initiation and underground storage organ formation, specifically in tubers and tuberous root crops. Lastly, we point out several questions that need to be answered in order to have a more complete understanding of the PEBP signaling network, which is crucial for the agronomical improvement of tubers and tuberous crops.
块茎和块根作物是人类重要的碳水化合物来源和主食，仅次于谷物。发育阶段转变，包括开花起始和地下贮藏器官形成，受复杂信号传导过程控制，这些过程涉及环境和内源信号的整合。磷脂酰乙醇胺结合蛋白（PEBP）基因家族成员开花位点T（FT）和终端花1/中心辐射花（TFL1/CEN）在这一发育阶段转变过程中起核心作用。FT和类FT蛋白具有促进发育阶段转变的功能，而TFL1/CEN则起相反作用。FT和TFL1/CEN之间的平衡对于确保植物成功的生命周期至关重要。在此，我们对PEBP在开花起始和地下贮藏器官形成中的作用及信号网络进行总结性综述，特别是在块茎和块根作物中。最后，我们指出了几个为更全面理解PEBP信号网络而需要回答的问题，这对于块茎和块根作物的农艺改良至关重要。
