DNA barcode trnH-psbA is a promising candidate for efficient identification of forage legumes and grasses.

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ID: 83234
2020
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Abstract
Grasslands are widespread ecosystems that fulfil many functions. Plant species richness (PSR) is known to have beneficial effects on such functions and monitoring PSR is crucial for tracking the effects of land use and agricultural management on these ecosystems. Unfortunately, traditional morphology-based methods are labor-intensive and cannot be adapted for high-throughput assessments. DNA barcoding could aid increasing the throughput of PSR assessments in grasslands. In this proof-of-concept work, we aimed at determining which of three plant DNA barcodes (rbcLa, matK and trnH-psbA) best discriminates 16 key grass and legume species common in temperate sub-alpine grasslands.Barcode trnH-psbA had a 100% correct assignment rate (CAR) in the five analyzed legumes, followed by rbcLa (93.3%) and matK (55.6%). Barcode trnH-psbA had a 100% CAR in the grasses Cynosurus cristatus, Dactylis glomerata and Trisetum flavescens. However, the closely related Festuca, Lolium and Poa species were not always correctly identified, which led to an overall CAR in grasses of 66.7%, 50.0% and 46.4% for trnH-psbA, matK and rbcLa, respectively. Barcode trnH-psbA is thus the most promising candidate for PSR assessments in permanent grasslands and could greatly support plant biodiversity monitoring on a larger scale.
Reference Key
loerasnchez2020dnabmc Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Loera-Sánchez, Miguel;Studer, Bruno;Kölliker, Roland;
Journal BMC research notes
Year 2020
DOI
10.1186/s13104-020-4897-5
URL
Keywords
species richness grasslands dna barcoding forages

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