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Rapid Identification of Officinal Akebiae Caulis and Its Toxic Adulterant Aristolochiae Manshuriensis Caulis (Aristolochia manshuriensis) by Loop -Mediated Isothermal Amplification

Authors Wu, Lan; Wang, Bo; Zhao, Mingming; Liu, Wei; Zhang, Peng; Shi, Yuhua; Xiong, Chao; Wang, Ping; Sun, Wei; Chen, Shilin

Journal FRONTIERS IN PLANT SCIENCE , AUG 2021,8:21

DOI 10.1007/s11368-021-02998-9

Abstract Mu-tong (Akebiae Caulis) is a traditional Chinese medicine commonly used as a diuretic and antiphlogistic. A common adulterant of Mu-tong is Guan-mu-tong (Aristolochiae Manshuriensis Caulis), which is derived from the stem of Aristolochia manshuriensis Komarov, and contains carcinogenic aristolochic acids. We used an alternative technique, loop-mediated isothermal amplification (LAMP), to differentiate Mu-tong from Guan-mu-tong because LAMP is quick, highly sensitive, and specific. We designed a set of four common primers (G-F3, G-B3, G-FIP,and G-BIP) and a loop primer (G-LB) for LAMP based on the internal transcribed spacer 2 sequence of Ar. manshuriensis. We successfully amplified the LAMP assays and visual detection occurred within 60 min at isothermal conditions of 65 degrees C. The LAMP reaction exhibited a tenfold increase in detection (4.22 pg/mu l DNA) over conventional polymerase chain reaction demonstrating that LAMP is a useful technique to detect Guan-mu-tong. We conclude that the LAMP technique is a potentially valuable safety control method for simple and efficient discrimination of Mu-tong from its adulterant Guan-mu-tong.

Species covered 关木通 Aristolochia manshuriensis 马兜铃属 Aristolochia