Evidence map›Paper›PMID 31587135›Full record

ArticleJournal of natural medicines2020

The combination of ITS2 and psbA-trnH region is powerful DNA barcode markers for authentication of medicinal Terminalia plants from Thailand.

Aekkhaluck Intharuksa, Yohei Sasaki, Hirokazu Ando, Wannaree Charoensup, Ratchuporn Suksathan, Kittipong Kertsawang, Panee Sirisa-Ard, Masayuki Mikage

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Article in Journal of natural medicines, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.2field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 28 citations in OpenAlex.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Aekkhaluck IntharuksaDepartment of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep Road, Suthep Muang, Chiang Mai, 50200, Thailand. aekkhaluck.int@cmu.ac.th.ORCID http://orcid.org/0000-0001-8345-2704
Yohei SasakiLaboratory of Molecular Pharmacognosy, Graduate School of Medical Sciences, Kanazawa University (Kakuma Campus), Kakuma, Kanazawa, Ishikawa, 920-1192, Japan. sasaki@p.kanazawa-u.ac.jp.
Hirokazu AndoLaboratory of Molecular Pharmacognosy, Graduate School of Medical Sciences, Kanazawa University (Kakuma Campus), Kakuma, Kanazawa, Ishikawa, 920-1192, Japan.
Wannaree CharoensupDepartment of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep Road, Suthep Muang, Chiang Mai, 50200, Thailand.
Ratchuporn SuksathanQueen Sirikit Botanic Garden, Mae Ream, Mae Rim, Chiang Mai, 50180, Thailand.
Kittipong KertsawangQueen Sirikit Botanic Garden, Mae Ream, Mae Rim, Chiang Mai, 50180, Thailand.
Panee Sirisa-ArdDepartment of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep Road, Suthep Muang, Chiang Mai, 50200, Thailand.
Masayuki MikageLaboratory of Medicinal Plant Resources, Department of Bioresource Development, Faculty of Agriculture, Tokyo University of Agriculture, 1737 Funako, Atsugi, Kanagawa, 243-0034, Japan.
Chiang Mai University · THKanazawa University · JPTokyo University of Agriculture · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The dried fruits of Terminalia plant (Combretaceae) called "Samo" have been used as herbal medicine in Thai traditional medicine. Four "Samo" crude drugs, namely, Samo thai, Samo thed, Samo dee-ngu, and Samo phiphek, are used as the main ingredients in Triphala and Trisamo recipes. Their commercial products are available in processed and powdered form, but are difficult to authenticate by conventional methods. In this study, we aimed to discriminate species of genus Terminalia for the identification of their crude drugs by a DNA barcoding technique. A total of 208 closely related nucleotide sequences were obtained from nine Terminalia species collected from Thailand and the DDBJ/EMBL/GenBank database. An effective DNA barcode marker was selected from six DNA loci (matK, rbcL, psbA-trnH, ITS, ITS1, and ITS2) and their two-locus combination. All sequences were analyzed by three major methods: (1) BLAST search; (2) the genetic divergence method using Kimura 2-parameter (K2P) distance matrices; and (3) tree topology analysis based on the neighbor-joining method. Comparison of the six candidate DNA loci indicated that ITS identified Terminalia with 100% accuracy at the species and genus levels in the BLAST1 method. ITS2 showed the highest K2P variability. The data from the single markers and the two-locus combinations revealed that only the two-locus combinations, namely, the combinations of rbcL, ITS, ITS1, and ITS2 with psbA-trnH, clearly discriminated all the species. From the results of DNA sequence analysis and the three methods, ITS2 is recommended for the identification of Terminalia species to supplement psbA-trnH.

Indexed as

Base SequenceDNA Barcoding, TaxonomicDNA, IntergenicDNA, PlantGenetic MarkersPhotosystem II Protein ComplexPhytotherapyPlant ExtractsPlants, MedicinalSequence Analysis, DNATerminaliaThailandDNA, IntergenicDNA, PlantGenetic MarkersPhotosystem II Protein ComplexPlant ExtractstriphalaDNA barcodeInternal transcribed spacerTerminaliaTriphala

Identifiers

PMID31587135
OpenAlexW2978101377

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.