Identification and expression profiling of selected MADS-box family genes in Dendrobium officinale
文献类型： 外文期刊
作者： Chen, Yue 1 ; Shen, Qi 3 ; Lyu, Ping 4 ; Lin, Renan 5 ; Sun, Chongbo 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Hort, Hangzhou, Zhejiang, Peoples R China
2.Minist Agr, Key Lab Creat Agr, Hangzhou, Zhejiang, Peoples R China
3.Zhejiang Acad Agr Sci, Plant Protect & Microbiol, Hangzhou, Zhejiang, Peoples R China
4.Linan Agr & Forestry Technol Extens Ctr, Hangzhou, Zhejiang, Peoples R China
5.Yueqing Forestry Varieties Tech Ctr, Yueqing, Zhejiang, Peoples R China
关键词： Dendrobium officinale; MADS-box genes; Flowering; Expression pattern; Orchids
期刊名称：GENETICA （ 影响因子：1.082； 五年影响因子：1.489 ）
ISSN： 0016-6707
年卷期： 2019 年 147 卷 3-4 期
页码：
收录情况： SCI
摘要： Dendrobium officinale, a herb with highly medicinal and ornamental value, is widely distributed in China. MADS-box genes encode transcription factors that regulate various growth and developmental processes in plants, particular in flowering. However, the MADS-box genes in D. officinale are largely unknown. In our study, expression profiling analyses of selected MADS-box genes in D. officinale were performed. In total, 16 DnMADS-box genes with full-length ORF were identified and named according to their phylogenetic relationships with model plants. The transient expression of eight selected MADS-box genes in the epidermal cells of tobacco leaves showed that these DnMADS-box proteins localized to the nucleus. Tissue-specific expression analysis pointed out eight flower-specific expressed MADS-box genes in D. officinale. Furthermore, expression patterns of DnMADS-box genes were investigated during the floral transition process. DnMADS3, DnMADS8 and DnMADS22 were significantly up-regulated in the reproductive phase compared with the vegetative phase, suggesting putative roles of these DnMADS-box genes in flowering. Our data showed that the expressions of MADS-box genes in D. officinale were controlled by diverse exogenous phytohormones. Together, these findings will facilitate further studies of MADS-box genes in Orchids and broaden our understanding of the genetics of flowering.
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