A first insight into Pycnoporus sanguineus BAFC 2126 transcriptome

PLoS One. 2013 Dec 2;8(12):e81033. doi: 10.1371/journal.pone.0081033. eCollection 2013.

Abstract

Fungi of the genus Pycnoporus are white-rot basidiomycetes widely studied because of their ability to synthesize high added-value compounds and enzymes of industrial interest. Here we report the sequencing, assembly and analysis of the transcriptome of Pycnoporus sanguineus BAFC 2126 grown at stationary phase, in media supplemented with copper sulfate. Using the 454 pyrosequencing platform we obtained a total of 226,336 reads (88,779,843 bases) that were filtered and de novo assembled to generate a reference transcriptome of 7,303 transcripts. Putative functions were assigned for 4,732 transcripts by searching similarities of six-frame translated sequences against a customized protein database and by the presence of conserved protein domains. Through the analysis of translated sequences we identified transcripts encoding 178 putative carbohydrate active enzymes, including representatives of 15 families with roles in lignocellulose degradation. Furthermore, we found many transcripts encoding enzymes related to lignin hydrolysis and modification, including laccases and peroxidases, as well as GMC oxidoreductases, copper radical oxidases and other enzymes involved in the generation of extracellular hydrogen peroxide and iron homeostasis. Finally, we identified the transcripts encoding all of the enzymes involved in terpenoid backbone biosynthesis pathway, various terpene synthases related to the biosynthesis of sesquiterpenoids and triterpenoids precursors, and also cytochrome P450 monooxygenases, glutathione S-transferases and epoxide hydrolases with potential functions in the biodegradation of xenobiotics and the enantioselective biosynthesis of biologically active drugs. To our knowledge this is the first report of a transcriptome of genus Pycnoporus and a resource for future molecular studies in P. sanguineus.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbohydrate Metabolism / physiology
  • Fungal Proteins / biosynthesis*
  • Gene Expression Regulation, Enzymologic / physiology*
  • Gene Expression Regulation, Fungal / physiology*
  • Pycnoporus / genetics
  • Pycnoporus / metabolism*
  • Transcriptome / physiology*

Substances

  • Fungal Proteins

Grants and funding

This work was supported by Grant BID PICT2010-00394 from the Agencia Nacional para la Promoción de la Ciencia y la Tecnología, ANPCyT (http://www.agencia.mincyt.gob.ar/) and Grant PIP2011-2013 N 0092 from the Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET (http://www.conicet.gov.ar/). CR is a PhD Fellow of CONICET, LL, AM and SW are Research Scientists of CONICET, Argentina. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.