Int. J. Mol. Sci. 2013, 14(5), 9080-9098; doi:10.3390/ijms14059080
Article

Transcriptome Analysis of Thapsia laciniata Rouy Provides Insights into Terpenoid Biosynthesis and Diversity in Apiaceae

Received: 22 February 2013; in revised form: 21 March 2013 / Accepted: 17 April 2013 / Published: 25 April 2013
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Thapsia laciniata Rouy (Apiaceae) produces irregular and regular sesquiterpenoids with thapsane and guaiene carbon skeletons, as found in other Apiaceae species. A transcriptomic analysis utilizing Illumina next-generation sequencing enabled the identification of novel genes involved in the biosynthesis of terpenoids in Thapsia. From 66.78 million HQ paired-end reads obtained from T. laciniata roots, 64.58 million were assembled into 76,565 contigs (N50: 1261 bp). Seventeen contigs were annotated as terpene synthases and five of these were predicted to be sesquiterpene synthases. Of the 67 contigs annotated as cytochromes P450, 18 of these are part of the CYP71 clade that primarily performs hydroxylations of specialized metabolites. Three contigs annotated as aldehyde dehydrogenases grouped phylogenetically with the characterized ALDH1 from Artemisia annua and three contigs annotated as alcohol dehydrogenases grouped with the recently described ADH1 from A. annua. ALDH1 and ADH1 were characterized as part of the artemisinin biosynthesis. We have produced a comprehensive EST dataset for T. laciniata roots, which contains a large sample of the T. laciniata transcriptome. These transcriptome data provide the foundation for future research into the molecular basis for terpenoid biosynthesis in Thapsia and on the evolution of terpenoids in Apiaceae.
Keywords: Thapsia laciniata; guaianolides; thapsane; Apiaceae; sesquiterpenoids
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MDPI and ACS Style

Drew, D.P.; Dueholm, B.; Weitzel, C.; Zhang, Y.; Sensen, C.W.; Simonsen, H.T. Transcriptome Analysis of Thapsia laciniata Rouy Provides Insights into Terpenoid Biosynthesis and Diversity in Apiaceae. Int. J. Mol. Sci. 2013, 14, 9080-9098.

AMA Style

Drew DP, Dueholm B, Weitzel C, Zhang Y, Sensen CW, Simonsen HT. Transcriptome Analysis of Thapsia laciniata Rouy Provides Insights into Terpenoid Biosynthesis and Diversity in Apiaceae. International Journal of Molecular Sciences. 2013; 14(5):9080-9098.

Chicago/Turabian Style

Drew, Damian P.; Dueholm, Bjørn; Weitzel, Corinna; Zhang, Ye; Sensen, Christoph W.; Simonsen, Henrik T. 2013. "Transcriptome Analysis of Thapsia laciniata Rouy Provides Insights into Terpenoid Biosynthesis and Diversity in Apiaceae." Int. J. Mol. Sci. 14, no. 5: 9080-9098.

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