使用 DNA 条形码鉴定 Sida 物种面临的挑战

IF 3.8 2区 农林科学 Q1 PLANT SCIENCES
Rahul P.R., Aysha K.M., Geetha S. Pillai, Sadheeshna Kumari S., Indira Balachandran
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引用次数: 0

摘要

印度医学体系的 "印度阿育吠陀药典(API)"建议在 Bala、Nagabala、Mahabala 和 Atibala 的药物制剂中分别使用 Sida cordifolia Linn(根)、Sida cordata (Burm.f.) Borss.Waalk.(气生部分)、Sida rhombifolia Linn.(根)和 Abutilon indicum (Linn.) Sw.(根)。(根)分别用于 Bala、Nagabala、Mahabala 和 Atibala 的药物制剂中。此外,在中国、东南亚、非洲和南美洲的传统保健系统中也使用了许多 Sida sp.它是一个分类复杂的属,通常很难从干燥/切碎的草药市场样本中鉴定其真伪。NCBI 数据库中的许多 Sida 序列,包括已发表的报告,都非常可疑,在系统发生学聚类过程中被重新划分为物种组。在所研究的四个位点中,ITS2 区段被认为是鉴定西达属物种的最佳位点,其次是 trnH-psbA。然而,trnH-psbA 系统发生未能区分(1)S. beddomei 和 S. cordata,(2)S. alnifolia 和 S. scabrida,(3)S. cordifolia 和 S. fryxellii,它们形成了单系群。每个物种组内 ITS2 基因座序列对的平均进化差异从 0.000 到 0.009 不等(平均值=0.0021),而物种间的平均种间距离为 0.1175,这使它们成为鉴定 Sida 物种的理想选择。在 ITS2 或 trnH-psbA 扩增失败的情况下,建议将 matK 和 rbcL 作为鉴定属间掺假物的备用位点。本研究确定了两个市场样本为掺假物种:(1)S. alnifolia;(2)S. acuta 和 S. alnifolia/S.scabrida 的混合物。该研究为阿育吠陀/草药行业利用 DNA 条形码鉴定 Sida 品种提供了路线图。同时,"未知 Sida 组 "的存在也凸显了进一步研究的必要性,即利用 DNA 条形码序列在系统发育水平上对所有 Sida 物种进行准确分类和鉴定,以深入了解 Sida 属的多样性和进化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Challenges in using DNA barcodes for authentication of Sida species

The Indian system of medicine’s “Ayurvedic pharmacopeia of India (API)” recommends the use of Sida cordifolia Linn (root), Sida cordata (Burm.f.) Borss.Waalk. (aerial part), Sida rhombifolia Linn. (root) and Abutilon indicum (Linn.) Sw. (root) in drug preparations of Bala, Nagabala, Mahabala and Atibala respectively. Moreover many Sida sp. are being used in China, South East Asia, Africa and South America in their traditional healthcare systems. It is a taxonomically complex genus often difficult to authenticate from dried/chopped herbal market samples. Many Sida sequences from the NCBI database, including published reports, were highly suspect and were redesignated into species groups during phylogenetic clustering. Among the four loci studied, ITS2 region was identified as the best for the Sida species identification followed by trnH-psbA. The trnH-psbA phylogeny however fails to differentiate between (1) S. beddomei and S. cordata, (2) S. alnifolia and S. scabrida, (3) S. cordifolia and S. fryxellii that formed monophyletic clusters. The average evolutionary divergence over Sequence Pairs within each species group for ITS2 locus ranged from 0.000 to 0.009 (Average=0.0021), while average Interspecific distance between species was 0.1175 making them ideal for authentication of Sida species. The matK and rbcL is recommended as a back-up loci for identifying intergeneric adulterants in case, the ITS2 or trnH-psbA amplification fails. The present study identified two market samples as adulterant species; (1) S. alnifolia and (2) a mixture of S. acuta and S. alnifolia/S.scabrida. The study provides a roadmap for Ayurvedic/herbal industry to utilize DNA barcoding for authentication of Sida species. At the same time the presence of “Unknown Sida group” highlights the need for further research to accurately classify and identify all Sida species at the phylogenetic level, utilizing the DNA barcode sequences to thoroughly understand the diversity and evolution of the Sida genus.

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来源期刊
Journal of Applied Research on Medicinal and Aromatic Plants
Journal of Applied Research on Medicinal and Aromatic Plants Pharmacology, Toxicology and Pharmaceutics-Drug Discovery
CiteScore
6.40
自引率
7.70%
发文量
80
审稿时长
41 days
期刊介绍: JARMAP is a peer reviewed and multidisciplinary communication platform, covering all aspects of the raw material supply chain of medicinal and aromatic plants. JARMAP aims to improve production of tailor made commodities by addressing the various requirements of manufacturers of herbal medicines, herbal teas, seasoning herbs, food and feed supplements and cosmetics. JARMAP covers research on genetic resources, breeding, wild-collection, domestication, propagation, cultivation, phytopathology and plant protection, mechanization, conservation, processing, quality assurance, analytics and economics. JARMAP publishes reviews, original research articles and short communications related to research.
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