文献类型：期刊文献

英文题名：Genome-wide transcriptome profiling provides insights into floral bud development of summer-flowering Camellia azalea

作者：Fan, Zhengqi[1,2] Li, Jiyuan[1,2] Li, Xinlei[1,2] Wu, Bin[1] Wang, Jiangying[1] Liu, Zhongchi[3] Yin, Hengfu[1,2]

第一作者：Fan, Zhengqi;范正琪

通信作者：Yin, HF[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China;[2]Key Lab Forestgenet & Breeding, Fuyang 311400, Zhejiang, Peoples R China;[3]Univ Maryland, Dept Mol Genet & Cell Biol, College Pk, MD 20742 USA

年份：2015

卷号：5

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000355245900001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 31300557). We also acknowledge the Breeding New Flower Varieties Program of Zhejiang Province (2012C12909-6), Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (NO. 2012BAD01B07), the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2014QB015), and Non-profit Research Projects (RISF6153). We thank Biomarker technologies (Beijing, China) for the help of data processing.

语种：英文

摘要：The transition from vegetative to reproductive growth in woody perennials involves pathways controlling flowering timing, bud dormancy and outgrowth in responses to seasonal cues. However little is known about the mechanism governing the adaptation of signaling pathways to environmental conditions in trees. Camellia azalea is a rare species in this genus flowering during summer, which provides a unique resource for floral timing breeding. Here we reported a comprehensive transcriptomics study to capture the global gene profiles during floral bud development in C. azalea. We examined the genome-wide gene expression between three developmental stages including floral bud initiation, floral organ differentiation and bud outgrowth, and identified nine co-expression clusters with distinctive patterns. Further, we identified the differential expressed genes ( DEGs) during development and characterized the functional properties of DEGs by Gene Ontology analysis. We showed that transition from floral bud initiation to floral organ differentiation required changes of genes in flowering timing regulation, while transition to floral bud outgrowth was regulated by various pathways such as cold and light signaling, phytohormone pathways and plant metabolisms. Further analyses of dormancy associated MADS-box genes revealed that SVP- and AGL24- like genes displayed distinct expression patterns suggesting divergent roles during floral bud development.