Panax ginseng-specific sequence characterized amplified region (SCAR) marker for testing medicinal products
Qiu-tao Jiang , Li Liu , Bing-yi Xiao , Wen-li Li , Hui-ming Luo , Ping Nie , Ye Ding , Jie Li , Wen-zhang Li
Journal of Central South University ›› 2018, Vol. 25 ›› Issue (5) : 1052 -1062.
Panax ginseng-specific sequence characterized amplified region (SCAR) marker for testing medicinal products
To screen genetic polymorphisms of Panax ginseng, as well as those of Panax quinquefolium and Panax notoginseng, analysis of random amplified polymorphic DNA (RAPD) was performed using 120 random primers. Of the successful amplicons obtained, the Panax ginseng-specific RAPD marker C-12 was cloned into a TA vector and sequenced (GenBank access number KU553472). Based on the sequence analysis results, a pair of primers specific to C-12 was designed. Finally, a SCAR marker-based identification system for Panax ginseng was developed after optimization of the reaction conditions. Using this method, two positive bands were stably observed at 300 bp and 130 bp in 33 batches of Panax ginseng samples tested, while negative results were obtained for another 101 batches of samples, including Panax quinquefolium, Panax notoginseng, adulterants, and other medicinal herbs. Thus, we successfully developed a PCR-based method for rapid and effective identification of Panax ginseng, which can be effectively used for the protection and utilization of germplasm resources and identification of the origins of Panax ginseng samples.
Panax ginseng / random amplified polymorphic DNA (RAPD) / sequence characterized amplified regions (SCAR) / molecular identification
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