Characterization of the REVEILLE family in Rosaceae and role of PbLHY in flowering time regulation
文献类型： 外文期刊
作者： Liu, Zhe 1 ; Zhu, Xiaoxuan 2 ; Liu, Weijuan 2 ; Qi, Kaijie 2 ; Xie, Zhihua 2 ; Zhang, Shaoling 2 ; Wu, Juyou 2 ; Wang, Peng 2 ;
作者机构： 1.Changzhi Med Coll, Dept Pharm, Changzhi 046000, Peoples R China
2.Nanjing Agr Univ, Sanya Inst, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China
3.Shanxi Prov Key Lab Funct Food Homologous Med & Fo, Changzhi, Peoples R China
4.Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing, Peoples R China
关键词： Pyrus bretschneideri; Flowering time; Circadian clock; RVE; LHY
期刊名称：BMC GENOMICS （ 影响因子：4.4； 五年影响因子：4.7 ）
ISSN： 1471-2164
年卷期： 2023 年 24 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundThe circadian clock integrates endogenous and exogenous signals and regulates various physiological processes in plants. REVEILLE (RVE) proteins play critical roles in circadian clock system, especially CCA1 (CIRCADIAN CLOCK ASSOCIATED 1) and LHY (LATE ELONGATED HYPOCOTYL), which also participate in flowering regulation. However, little is known about the evolution and function of the RVE family in Rosaceae species, especially in Pyrus bretschneideri.ResultsIn this study, we performed a genome-wide analysis and identified 51 RVE genes in seven Rosaceae species. The RVE family members were classified into two groups based on phylogenetic analysis. Dispersed duplication events and purifying selection were the main drivers of evolution in the RVE family. Moreover, the expression patterns of ten PbRVE genes were diverse in P. bretschneideri tissues. All PbRVE genes showed diurnal rhythms under light/dark cycles in P. bretschneideri leaves. Four PbRVE genes also displayed robust rhythms under constant light conditions. PbLHY, the gene with the highest homology to AtCCA1 and AtLHY in P. bretschneideri, is localized in the nucleus. Ectopic overexpression of PbLHY in Arabidopsis delayed flowering time and repressed the expression of flowering time-related genes.ConclusionThese results contribute to improving the understanding and functional research of RVE genes in P. bretschneideri.
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