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DNA metabarcoding of orchid-derived products reveals widespread illegal orchid trade
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology. Univ Oslo, Nat Hist Museum, Oslo, Norway.;Nat Biodivers Ctr, Leiden, Netherlands..ORCID iD: 0000-0003-1985-7859
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
Univ Oslo, Nat Hist Museum, Oslo, Norway..
Univ Oslo, Nat Hist Museum, Oslo, Norway.;NIRDBIS, Stejarul Res Ctr Biol Sci, Piatra Neamt, Romania..
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2017 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 284, no 1863, article id 20171182Article in journal (Refereed) Published
Abstract [en]

In eastern Mediterranean countries orchids continue to be collected from the wild for the production of salep, a beverage made of dried orchid tubers. In this study we used nrITS1 and nrITS2 DNA metabarcoding to identify orchid and other plant species present in 55 commercial salep products purchased in Iran, Turkey, Greece and Germany. Thirty samples yielded a total of 161 plant taxa, and 13 products (43%) contained orchid species and these belonged to 10 terrestrial species with tuberous roots. Another 70% contained the substitute ingredient Cyamopsis tetraganoloba (Guar). DNA metabarcoding using the barcoding markers nrITS1 and nrITS2 shows the potential of these markers and approach for identification of species used in salep products. The analysis of interspecific genetic distances between sequences of these markers for the most common salep orchid genera shows that species level identifications can be made with a high level of confidence. Understanding the species diversity and provenance of salep orchid tubers will enable the chain of commercialization of endangered species to be traced back to the harvesters and their natural habitats, and thus allow for targeted efforts to protect or sustainably use wild populations of these orchids.

Place, publisher, year, edition, pages
ROYAL SOC , 2017. Vol. 284, no 1863, article id 20171182
Keywords [en]
CITES, DNA metabarcoding, food safety, forensic botany, orchids, salep
National Category
Botany
Identifiers
URN: urn:nbn:se:uu:diva-336474DOI: 10.1098/rspb.2017.1182ISI: 000411723200027OAI: oai:DiVA.org:uu-336474DiVA, id: diva2:1168349
Available from: 2017-12-20 Created: 2017-12-20 Last updated: 2017-12-20Bibliographically approved

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de Boer, Hugo J.Ghorbani, Abdolbaset

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