Yoon Hyeryung, Yang Jungil, Liang Wanqi, Zhang Dabing, An Gynheung
Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin, South Korea.
Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
Front Plant Sci. 2018 Feb 6;9:102. doi: 10.3389/fpls.2018.00102. eCollection 2018.
Flower organ patterning is accomplished by spatial and temporal functioning of various regulatory genes. We previously reported that () induces flowering by mediating the trimethylation of Histone H3 on chromatin. In this study, we report that also plays crucial roles during spikelet development. Two independent lines of T-DNA insertional mutants in the gene displayed altered organ numbers and abnormal morphology in all spikelet organs. Scanning electron microscopy showed that affected organ primordia formation during early spikelet development. Expression analysis revealed that is expressed in all stages of the spikelet developmental. Transcriptome analysis of developing spikelets revealed that several regulatory genes involved in that process and the formation of floral organs were down-regulated in . These results suggest that 2 is required for proper expression of the regulatory genes that control floral organ number and morphology.
花器官模式的形成是由各种调控基因在空间和时间上的作用来完成的。我们之前报道过（）通过介导染色质上组蛋白H3的三甲基化来诱导开花。在本研究中，我们报道（）在小穗发育过程中也起着关键作用。该基因的两个独立的T-DNA插入突变体株系在所有小穗器官中都表现出器官数量改变和形态异常。扫描电子显微镜显示（）在小穗发育早期影响器官原基的形成。表达分析表明（）在小穗发育的各个阶段都有表达。对发育中小穗的转录组分析显示，参与该过程和花器官形成的几个调控基因在（）中表达下调。这些结果表明（）对于控制花器官数量和形态的调控基因的正常表达是必需的。
