College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto-Cho, Kasugai, Aichi, 487-8501, Japan.
Institute of Nature and Environmental Technology, Kanazawa University, Wake O-24, Nomi, Ishikawa, 923-1224, Japan.
J Nat Med. 2023 Jun;77(3):614-619. doi: 10.1007/s11418-023-01688-9. Epub 2023 Mar 20.
In the Yarlung Zangbo River Valley of the southeastern Tibetan Plateau, China (29°07'49.5"N, 92°41'11.0"E, 3256 m above sea level), we found an Ephedra saxatilis community in the xeric steppe with shrubland vegetation habitat of the broad alluvial plain of the river with soil having relatively higher water-soluble cation (Ca, 8.62; K, 1.94; Mg, 2.38 mmol/100 g dry soil weight) and nitrogen (NO, 21.78; NH, 1.82 mmol/100 g dry soil weight) content. The ranges of ephedrine and pseudoephedrine in 13 E. saxatilis samples were as follows: ephedrine, not detected-3.03 of dry weight (%DW) and pseudoephedrine, not detected-1.36%DW. The 13 E. saxatilis plants collected in the study area showed intraspecific variability of ephedrine and pseudoephedrine with 6 samples containing ephedrine and pseudoephedrine, 6 samples containing only ephedrine, and 1 sample containing only pseudoephedrine.
在中国东南部青藏高原的雅鲁藏布江流域（29°07'49.5"N，92°41'11.0"E，海拔 3256 米），我们在河流宽阔的冲积平原的干旱草原植被生境中发现了麻黄属植物群落，土壤中具有相对较高的水溶性阳离子（Ca，8.62；K，1.94；Mg，2.38mmol/100g 干土重）和氮（NO，21.78；NH，1.82mmol/100g 干土重）含量。在 13 份麻黄样品中，麻黄碱和伪麻黄碱的含量范围如下：麻黄碱，未检出-3.03（干重的%DW）和伪麻黄碱，未检出-1.36%DW。研究区域采集的 13 株麻黄植物表现出麻黄碱和伪麻黄碱的种内变异性，其中 6 份样品同时含有麻黄碱和伪麻黄碱，6 份样品仅含有麻黄碱，1 份样品仅含有伪麻黄碱。
