文献类型： 外文期刊

作者： Chen, X. D. ¹ ; Wang, J. ¹ ; Zhao, M. Z. ¹ ; Zhao, F. ¹ ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Pomol, Nanjing 210014, Jiangsu, Peoples R China; Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Jiangsu, Peoples R China

关键词： Arabidopsis thaliana; cold stress; gene expression; phylogenetic analysis

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

ISSN： 0006-3134

年卷期： 2018 年 62 卷 3 期

页码：

收录情况： SCI

摘要： Strawberry is an economically important fruit crop worldwide. Circadian clock genes are endogenous timers that regulate a wide range of metabolic processes and consequently plant development. However, little is known about the circadian clock genes in strawberry. In the present work, we identified 12 primary circadian clock genes from the diploid woodland strawberry (Fragaria vesca L.) genome. Phylogenetic, conserved motif, and gene structure analyses revealed the evolutionary relationships of strawberry circadian clock genes with homologous genes from other species. Promoter analysis revealed different regulatory elements responding to abiotic and biotic stresses and phytohormones. We characterized the transcript patterns of strawberry circadian clock genes over a 48-h period. The expression patterns of seven circadian clock genes displayed circadian rhythms. We also examined the expression patterns of these genes in response to low-temperature stress and six of them showed an upregulated expression. Interestingly, most of these upregulated genes were highly expressed during the day. Our study reveals the characteristics of primary circadian clock components in diploid woodland strawberry and their responses to low-temperature stress and lays a foundation for future functional studies of these circadian clock genes during the growth and development of diploid woodland strawberry.