E-viri
Recenzirano
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Ye, Jiabao; Cheng, Shuiyuan; Zhou, Xian; Chen, Zexiong; Kim, Soo Un; Tan, Junping; Zheng, Jiarui; Xu, Feng; Zhang, Weiwei; Liao, Yongling; Zhu, Yongxing
Industrial crops and products, 11/2019, Letnik: 139Journal Article
•SMRT and SGS sequencing could providing a comprehensive transcriptome data for Ginkgo.•LncRNA, AS, and fusion gene participating in the regulation of flavonoid metabolism.•Revealing the regulation network associated with flavonoid biosynthesis in G. biloba.•Revealing the synthetic transport of flavonoids in G. biloba. Ginkgo biloba, which contains flavonoids as bioactive components, is widely used in traditional Chinese medicine. Increasing the flavonoid production of medicinal plants through genetic engineering generally focuses on the key genes involved in flavonoid biosynthesis. However, the molecular mechanisms underlying such biosynthesis are not yet well understood. To understand these mechanisms, a combination of second-generation sequencing (SGS) and single-molecule real-time (SMRT) sequencing was applied to G. biloba. Eight tissues were sampled for SMRT sequencing to generate a high-quality, full-length transcriptome database. From 23.36 Gb clean reads, 12,954 alternative polyadenylation events, 12,290 alternative splicing events, 929 fusion transcripts, 2,286 novel transcripts, and 1,270 lncRNAs were predicted by removing redundant reads. Further studies reveal that 7 AS, 5 lncRNA, and 6 fusion gene events were identified in flavonoid biosynthesis. A total of 12 gene modules were revealed to be involved in flavonoid metabolism structural genes and transcription factors by constructing co-expression networks. Weighted gene coexpression network analysis (WGCNA) analysis reveals that some hub genes operate during the biosynthesis by identifying transcription factors (TFs) and structure genes. Seven key hub genes were also identified by analyzing the correlation between gene expression level and flavonoids content. The results highlight the importance of SMRT sequencing of the full-length transcriptome in improving genome annotation and elucidating the gene regulation of flavonoid biosynthesis in G. biloba by providing a comprehensive set of reference transcripts.
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in: SICRIS
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