Fungal community analysis by high-throughput sequencing of amplified markers--a user's guide

New Phytol. 2013 Jul;199(1):288-99. doi: 10.1111/nph.12243. Epub 2013 Mar 28.

Abstract

Novel high-throughput sequencing methods outperform earlier approaches in terms of resolution and magnitude. They enable identification and relative quantification of community members and offer new insights into fungal community ecology. These methods are currently taking over as the primary tool to assess fungal communities of plant-associated endophytes, pathogens, and mycorrhizal symbionts, as well as free-living saprotrophs. Taking advantage of the collective experience of six research groups, we here review the different stages involved in fungal community analysis, from field sampling via laboratory procedures to bioinformatics and data interpretation. We discuss potential pitfalls, alternatives, and solutions. Highlighted topics are challenges involved in: obtaining representative DNA/RNA samples and replicates that encompass the targeted variation in community composition, selection of marker regions and primers, options for amplification and multiplexing, handling of sequencing errors, and taxonomic identification. Without awareness of methodological biases, limitations of markers, and bioinformatics challenges, large-scale sequencing projects risk yielding artificial results and misleading conclusions.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Biota
  • Computational Biology / methods*
  • DNA Primers
  • DNA, Fungal / analysis
  • DNA, Intergenic
  • Fungi / classification
  • Fungi / genetics*
  • Genetic Markers*
  • High-Throughput Nucleotide Sequencing / methods*
  • Mycorrhizae / genetics
  • Polymerase Chain Reaction / methods
  • Soil Microbiology

Substances

  • DNA Primers
  • DNA, Fungal
  • DNA, Intergenic
  • Genetic Markers