Résumé
Fructus Arctii is a traditional Chinese medicine. The main counterfeit species are the seeds of Arctium tomentosum, Onopordum acanthium, Silybum marianum, Saussurea costus, Amorpha fruticosa. Traditional identification methods or molecular barcoding techniques can identify Fructus Arctii and its counterfeit species. However, the identification of the mixture of it and its spurious species is rarely reported. In this paper, we sequenced the ITS2 sequences of Fructus Arctii and 5 kinds of spurious species mix powder by high-throughput sequencing to identify the mixed powder species and providing new ideas for the identification of Fructus Arctii mix powder. The total DNA in mixed powder was extracted, and the ITS2 sequences in total DNA was amplified. Paired-end sequencing was performed on the DNA fragment of the community using the Illumina MiSeq platform. The sequence was analyzed by the software FLASH, QIIME and GraPhlAn etc. The results showed that the high quality ITS2 sequences of 39910 mix samples were obtained from the mixed samples, of which the total ITS2 sequence of the samples genus was 34 935. Phylogenetic analysis showed that the samples contained Fructus Arctii, A. tomentosum, O. acanthium, S. marianum, S. costus and A. fruticosa. Using ITS2 sequences as DNA barcodes, high-throughput sequencing technology can be used to detect the Fructus Arctii and its spurious specie in mixed powder, which can provide reference for the quality control, safe use of medicinal materials of Fructus Arctii and the identification of mixed powder of traditional Chinese medicine.
Sujets)
Arctium , Chimie , Classification , Codage à barres de l'ADN pour la taxonomie , ADN des plantes , Génétique , Espaceur de l'ADN ribosomique , Génétique , Contamination de médicament , Médicaments issus de plantes chinoises , Normes de référence , Fabaceae , Fruit , Séquençage nucléotidique à haut débit , Silybium marianum , Onopordum , Phylogenèse , SaussureaRésumé
In this note, the authors give a brief description of 12 wild plants not observed previously in Lebanon [of which a tree] or species considered extinct in this country since more than 50 years. They add new details to the description of 2 endemic plants of Lebanon Senecio mouterdei, abundant in Wadi-Johannam and Orobanche astragali parasite living in altitude