ArticleMolecular biology reports2025
Assessing the accuracy of cp-DNA barcodes in Colchicum species identification.
Article in Molecular biology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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3 authors.
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Abstract
backgroundThe genus Colchicum, belonging to the family Colchicaceae, holds significant economic and medicinal value globally. However, precise identification of many species within this genus is challenging. In order to address this obstacle, we carried out a study involving 155 genotypes from various locations in Türkiye to assess the effectiveness of DNA barcoding, specifically utilizing the matK, rbcL, trnH-psbA chloroplast DNA (cp-DNA) barcode regions, by comparing their effectiveness in distinguishing Colchicum species. METHODS AND
resultsFollowing PCR amplification and sequence analysis, multiple sequence alignment was conducted. Stop codons were detected and sequences were cleaned. Conserved region identification, and GC content analysis were carried out. Species discrimination was analysed (best match, best close-match, all species barcodes functions). The Wilcoxon Ranked Sum test was used to assess differences in genetic variation within and between species. As a result, trnH-psbA emerged as the most effective locus for species differentiation, with significantly higher intra-specific (mean: 3.915) and inter-specific distances (maximum: 1.844) compared to matK and rbcL. matK displayed moderate identification success rates, while rbcL had the lowest performance. trnH-psbA excelled in the 'best match' and 'best close match' categories; rbcL recorded the highest incorrect identification rates.
conclusionThis study highlights the importance of DNA barcoding, specifically the trnH-psbA locus, in distinguishing Colchicum species. The locus shows significantly higher genetic distances than the matK and rbcL loci, underscoring its effectiveness for species identification. These insights are crucial for comprehending the genetic diversity of Colchicum species and enhancing resources for future taxonomy and conservation efforts.
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