De Novo Transcriptome Assembly and Annotation of the Leaves and Callus of Cyclocarya Paliurus (Bata1) Iljinskaja

PLoS One. 2016 Aug 2;11(8):e0160279. doi: 10.1371/journal.pone.0160279. eCollection 2016.

Abstract

Cyclocarya Paliurus (Bata1) Iljinskaja contains various bioactive secondary metabolites especially in leaves, such as triterpenes, flavonoids, polysaccharides and alkaloids, and its leaves are widely used as an hyperglycemic tea in China. In the present paper, we sequenced the transcriptome of the leaves and callus of Cyclocarya Paliurus using Illumina Hiseq 4000 platform. After sequencing and de novo assembly, a total of 65,654 unigenes were generated with an N50 length of 1,244bp. Among them, 35,041 (53.37%) unigenes were annotated in NCBI Non-Redundant database, 19,453 (29.63%) unigenes were classified into Gene Ontology (GO) database, and 7,259 (11.06%) unigenes were assigned to Clusters of Orthologous Group (COG) categories. Furthermore, 11,697 (17.81%) unigenes were mapped onto 335 pathways in Kyoto Encyclopedia of Genes and Genomes (KEGG), among which 1,312 unigenes were identified to be involved in biosynthesis of secondary metabolites. In addition, a total of 11,247 putative simple sequence repeats (SSRs) were detected. This transcriptome dataset provides a comprehensive sequence resource for gene expression profiling, genetic diversity, evolution and further molecular genetics research on Cyclocarya Paliurus.

MeSH terms

  • Alkaloids / biosynthesis
  • Chromosome Mapping
  • Flavonoids / biosynthesis
  • Gene Expression Regulation, Plant*
  • Gene Ontology
  • Genetic Variation
  • Genome, Plant*
  • High-Throughput Nucleotide Sequencing
  • Juglandaceae / genetics*
  • Juglandaceae / metabolism
  • Microsatellite Repeats
  • Molecular Sequence Annotation
  • Plant Leaves / genetics*
  • Plant Leaves / metabolism
  • Polysaccharides / biosynthesis
  • Secondary Metabolism / genetics
  • Transcriptome*
  • Triterpenes / metabolism

Substances

  • Alkaloids
  • Flavonoids
  • Polysaccharides
  • Triterpenes

Grants and funding

This work was funded by the Natural Science Foundation of PR China (No. 31260368; No. 31460436). ZP Yin received the funding.