Full-length transcriptome sequences and splice variants obtained by a combination of sequencing platforms applied to different root tissues of Salvia miltiorrhiza and tanshinone biosynthesis - PubMed (original) (raw)

. 2015 Jun;82(6):951-961.

doi: 10.1111/tpj.12865. Epub 2015 May 25.

Reuben J Peters 2, Jason Weirather 3, Hongmei Luo 1, Baosheng Liao 1, Xin Zhang 1, Yingjie Zhu 4, Aijia Ji 1, Bing Zhang 5, Songnian Hu 5, Kin Fai Au 3, Jingyuan Song 1, Shilin Chen 1 4

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Full-length transcriptome sequences and splice variants obtained by a combination of sequencing platforms applied to different root tissues of Salvia miltiorrhiza and tanshinone biosynthesis

Zhichao Xu et al. Plant J. 2015 Jun.

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Abstract

Danshen, Salvia miltiorrhiza Bunge, is one of the most widely used herbs in traditional Chinese medicine, wherein its rhizome/roots are particularly valued. The corresponding bioactive components include the tanshinone diterpenoids, the biosynthesis of which is a subject of considerable interest. Previous investigations of the S. miltiorrhiza transcriptome have relied on short-read next-generation sequencing (NGS) technology, and the vast majority of the resulting isotigs do not represent full-length cDNA sequences. Moreover, these efforts have been targeted at either whole plants or hairy root cultures. Here, we demonstrate that the tanshinone pigments are produced and accumulate in the root periderm, and apply a combination of NGS and single-molecule real-time (SMRT) sequencing to various root tissues, particularly including the periderm, to provide a more complete view of the S. miltiorrhiza transcriptome, with further insight into tanshinone biosynthesis as well. In addition, the use of SMRT long-read sequencing offered the ability to examine alternative splicing, which was found to occur in approximately 40% of the detected gene loci, including several involved in isoprenoid/terpenoid metabolism.

Keywords: Salvia miltiorrhiza; alternative splicing; next-generation sequencing; single-molecule real-time sequencing; tanshinone biosynthesis.

© 2015 The Authors The Plant Journal © 2015 John Wiley & Sons Ltd.

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