Journal
GENOMICS
Volume 111, Issue 6, Pages 1474-1482Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygeno.2018.09.022
Keywords
Saussurea lappa; Pharmacological properties; Secondary metabolism; Sesquiterpenoids; Costunolide; Transcriptome analysis
Funding
- SERB, India
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Saussurea lappa (family Asteraceae) possesses immense pharmacological potential mainly due to the presence of sesquiterpene lactones. In spite of its medicinal importance, S. lappa has been poorly explored at the molecular level. We initiated leaf transcriptome sequencing of S. lappa using the illumina highseq 2000 platform and generated 62,039,614 raw reads. Trinity assembler generated 122,434 contigs with an N50 value of 1053 bp. The assembled transcripts were compared against the non-redundant protein database at NCBI. The Blast2GO analysis assigned gene ontology (GO) terms, categorized into molecular functions (3132), biological processes (4477) and cellular components (1.927). Using KEGG, around 476 contigs were assigned to 39 pathways. For secondary metabolic pathways, we identified transcripts encoding genes involved in sesquiterpenoid and flavonoid biosynthesis. Relatively low number of transcripts were also found encoding for genes involved in the alkaloid pathway. Our data will contribute to functional genomics and metabolic engineering studies in this plant.
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