title: Transcriptome exploration for further understanding of the tropane alkaloids biosynthesis in Anisodus acutangulus.
abstract: Tropane alkaloids (TAs) such as anisodamine, anisodine, hyoscyamine and scopolamine are extensively used in clinical practice as anticholinergic agents. Anisodus acutangulus produces TAs in root tissue, and although several genes involved in scopolamine biosynthesis have been cloned, yet the biosynthetic pathway of TAs remains poorly understood. To further understand TAs biosynthesis mechanism, transcriptome analysis with deep RNA sequencing in A. acutangulus roots was performed in this study; 48 unigenes related to tropane, piperidine and pyridine alkaloid biosynthesis, 145 linked to the distribution of arginine to TAs biosynthesis, and 86 categorized to terpenoid backbone biosynthesis have been identified in pathway enrichment analyses with eukaryotic orthologous groups (KOG) and Kyoto encyclopedia of genes and genomes. Additionally, 82 unigenes annotated as cytochrome P450 family members seemed to be involved in secondary metabolism. Genes encoding littorine mutase/monooxygenase (CYP80F1), diamine oxidase (DAO), alcohol dehydrogenase (ADH) and aromatic amino acid aminotransferase (ArAT) may also play roles in TAs biosynthetic pathways. Furthermore, over 1,000 unigenes were identified as potential transcription factors of WRKY, AP2/ERF, MYB and bHLH families, which would be helpful to understand transcriptional regulation of secondary metabolite biosynthesis. These data enable novel insights into A. acutangulus transcriptome, updating the knowledge of TAs biosynthetic mechanism at molecular level.
authors: Laboratory of Plant Biotechnology, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, People's Republic of China.
authors: Lijie
authors: L
authors: Cui
authors: Fenfen
authors: F
authors: Huang
authors: Dasheng
authors: D
authors: Zhang
authors: Yuping
authors: Y
authors: Lin
authors: Pan
authors: P
authors: Liao
authors: Jie
authors: J
authors: Zong
authors: Guoyin
authors: G
authors: Kai
mesh_terms: D000470:Alkaloids / Q000096:biosynthesis*; D053898:Biosynthetic Pathways / Q000235:genetics; D003577:Cytochrome P-450 Enzyme System / Q000145:classification / Q000235:genetics / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D059014:High-Throughput Nucleotide Sequencing; D010802:Phylogeny; D010940:Plant Proteins / Q000145:classification / Q000235:genetics / Q000378:metabolism; D018517:Plant Roots / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017423:Sequence Analysis, RNA; D019657:Solanaceae / Q000235:genetics* / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism; D059467:Transcriptome / Q000235:genetics*; D014326:Tropanes / Q000378:metabolism*
chemical_list: D000470:Alkaloids; D010940:Plant Proteins; D014157:Transcription Factors; D014326:Tropanes; D003577:Cytochrome P-450 Enzyme System