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- W4256223023 abstract "Metabarcoding can rapidly determine the species composition of bulk samples and thus aids ecosystem assessment. However , it is essential to use primer sets that minimize amplification bias among taxa to maximize species recovery. Despite this fact, the performance of primer sets employed for metabarcoding terrestrial arthropods has not been sufficiently evaluated. Thus this study tests the performance of 36 primer sets on a mock community containing 374 species. Amplification success was assessed with gradient PCRs and the 21 most promising primer sets selected for metabarcoding. These 21 primer sets where also tested by metabarcoding a Malaise trap sample. We identified eight primer sets, mainly those including inosine and/or high degeneracy, that recovered more than 95% of the species in the mock community. Results from the Malaise trap sample were congruent with the mock community, but primer sets generating short amplicons produced potential false positives. Taxon recovery from the 21 amplicon pools of the mock community and Malaise trap sample were used to select four primer sets for metabarcoding evaluation at different annealing temperatures (40-60 Co) using the mock community. Temperature did only have a minor effect on taxa recovery that varied with the specific primer pair. This study reveals the weak performance of some primer sets employed in past studies. It also demonstrated that certain primer sets can recover most taxa in a diverse species assemblage. Thus there is no need to employ several primer sets targeting the same amplicon. While we identified several suited primer sets for arthropod metabarcoding, the primer selection depends on the targeted taxonomic groups, as well as DNA quality, desired taxonomic resolution, and sequencing platform employed for analysis." @default.
- W4256223023 created "2022-05-12" @default.
- W4256223023 date "2019-07-15" @default.
- W4256223023 modified "2023-09-27" @default.
- W4256223023 doi "https://doi.org/10.7287/peerj.preprints.27801v2/supp-20" @default.
- W4256223023 hasPublicationYear "2019" @default.
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