首页 | 本学科首页   官方微博 | 高级检索  
     


The Carbon Isotope Ratios and Centents of Mineral Elements in Leaves of Chinese Medi cinal Plants
Authors:Lin Zhi-fang  Sun Gu-chou  Wang Wei  Chen Bang-yu  Kuo Chun-yen  James.R. Ehleringer
Abstract:Leaf carbon isotope ratios and 13 kinds of mineral elements were measured on 36 species of common Chinese medicinal plants in a subtropical monsoon forest of Ding Hu Shan in Guangdong Province. The δ13C value were from –26.4 to –32.6%, indicating that all of the species belonged the photosynthetic C3 types. The relative lower value of δ13C was observed in the life form of shrubs. The contents of 7 elements (N, P, K, Ca, Na Mg, Si) were dependent upon the species, life form, medicinal function and medicinal part. Herb type medicine and the used medicinal part of leaves or whole plant showed higher levels of above elements than the others. Among the nine groups with different medicinal functions, it was found that more nitrogen was in the leaves of medicinal plants for hemophthisis, hypertension and stomachic troubles, more phosphorus and potassium were in the leaves for cancer and snake bite medicines, but more calcium and magnesium were in the leaves for curing rheumatics. Ferric, aluminium and manganese were the main composition of microelements in leaves. There were higher content of ferric in leaves for hemophthisis medicine, higher zinc in leaves for cold and hypertension medicine, and higer cuprum in leaves of stomachic medicine. It was suggested that the pattern of mineral elements in leaves of Chinese medicinal plants reflected the different properties of absorption and accumulation. Some additional effect due to the high content of certain element might be associated with the main function of that medicine.
Keywords:Leaves of Chinese medicinal plants   Mineral elements   Carbon isotope ratio   Life form   Medicinal function  
点击此处可从《植物学报(英文版)》浏览原始摘要信息
点击此处可从《植物学报(英文版)》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号