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    Jasminum sambac is a perennial evergreen shrub plant. With fragrant and aroma, and often used as a raw material for natural spices. In this study, we used white light as the control group, red-light and blue-light as the treatment to study effects of different light on jasmine flowering. Red- light promoted jasmine flowering in advance and increased the number of flower buds, whereas blue-light delayed jasmine flowering and decreased the number of flower buds. There was significant difference on the number of flower buds among the three groups. The top buds' transcriptomes of different light were sequenced by the Illumina Hiseq/Miseq 2000 high-throughput sequencing technology. In total 2 452 457 Unigenes were generated by transcriptome sequencing, of which 1 760 723 Unigenes were annotated into GO, COG, KEGG, KOG, NR, Pfam, Swiss-Prot, NOG databases. There were 894 DEGs in the control group vs red-light group, 2 690 DEGs in the control group vs blue-light group, and 3 828 DEGs in the red-light group vs blue-light group. KEGG Enrichment analysis reveals that the significant enrichment pathways had 6 pathways, including secondary metabolite biosynthesis, phenylpropanoid biosynthesis, indole alkaloid biosynthesis, photosynthesis, plant hormone signaling, and plants-pathogen interactions, and 24 related DEGs were detected by RT-qPCR, the result of which was significantly correlated with the transcriptome data. Through further analysis of transcriptome data, a large number of flowering-related hormones (IAA, ETH, GA, CTK, ABA, SA, JA) signal transduction genes and flowering pathway-related regulatory genes (PHY, CRY1, FPA, AGL and SOC1) and transcription factor (bHLH, MYB, WKRY) family genes were found. The study will help elucidate the differential expression mechanism of different light regulation of jasmine flowering.

    Citation

    Di Chen, Yongchun Guo, Xuejin Chen, Pengjie Wang, Guixin Chen, Naixing Ye. Transcriptome analysis of flowering regulated by red and blue light in Jasminum sambac]. Sheng wu gong cheng xue bao = Chinese journal of biotechnology. 2020 Sep 25;36(9):1869-1886

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    PMID: 33164463

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