SSU to the rescue: conserving the original partial SSU fragment ahead of the ITS1 sub-locus enhances the detection of putative chimeras and limits the formation of possibly spurious taxa in fungal metabarcoding
Source: NCBI BioProject (ID PRJNA547592)

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Project name: Abies balsamea fungal endophytes
Description: The aim of this study was to evaluate if (1) conserving the original 5’ extremity of the fungal pyrosequences, usually the partial fragment of the ribosomal small sub-unit (pSSU) immediately adjacent to the ITS1F primer ahead of the ITS1 sub-locus, impacts the detection of chimeras; (2) as the pSSU displays a lower variability, its inclusion in addition to the ITS1 sub-locus might also buffer the variation due to putative sequencing errors, and reduce the formation of the singletons and doubletons; (3) performing ecological analyses based on pSSU-ITS1 leads to similar conclusions on the community structure as analyses based on ITS1. For this study we analysed the fungal endophytic community (endomycobiota) of a single individual of Abies balsamea (L.) Mill. based on 108 samples distributed among both the aerial and root systems.
Data type: targeted loci environmental
Sample scope: Environment
Relevance: Environmental
Organization: Centre for Forest Research, Laval University
Last updated: 2019-06-06