Chen Zijing, Han Yingyan, Ning Kang, Ding Yunyu, Zhao Wensheng, Yan Shuangshuang, Luo Chen, Jiang Xiaotang, Ge Danfeng, Liu Renyi, Wang Qian, Zhang Xiaolan
Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China.
New Technological Laboratory in Agriculture Application in Beijing, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China.
Front Plant Sci. 2018 Jan 18;8:2248. doi: 10.3389/fpls.2017.02248. eCollection 2017.
Lettuce ( L.) is one of the most important leafy vegetable that is consumed during its vegetative growth. The transition from vegetative to reproductive growth is induced by high temperature, which has significant economic effect on lettuce production. However, the progression of floral transition and the molecular regulation of bolting are largely unknown. Here we morphologically characterized the inflorescence development and functionally analyzed the gene during bolting regulation in lettuce. We described the eight developmental stages during floral transition process. The expression of was negatively correlated with bolting in different lettuce varieties, and was promoted by heat treatment. Overexpression of could recover the late-flowering phenotype of mutant. Knockdown of by RNA interference dramatically delayed bolting in lettuce, and failed to respond to high temperature. Therefore, this study dissects the process of inflorescence development and characterizes the role of in bolting regulation in lettuce.
生菜（L.）是最重要的叶菜类蔬菜之一，在其营养生长阶段被食用。从营养生长向生殖生长的转变是由高温诱导的，这对生菜生产具有重大经济影响。然而，花转变的进程和抽薹的分子调控在很大程度上尚不清楚。在此，我们对生菜花序发育进行了形态学表征，并对抽薹调控过程中的基因进行了功能分析。我们描述了花转变过程中的八个发育阶段。在不同生菜品种中，的表达与抽薹呈负相关，并受热处理促进。过表达可以恢复突变体的晚花表型。通过RNA干扰敲低在生菜中显著延迟了抽薹，并且对高温没有反应。因此，本研究剖析了花序发育过程，并表征了在生菜抽薹调控中的作用。
