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- Title
Content and distribution of active components in cultivated and wild Taxus chinensis var. mairei plants.
- Authors
YU Shao-shuai; SUN Qi-wu; ZHANG Xiao-ping; TIAN Sheng-ni; BO Pei-lei
- Abstract
Taxus chinensis var. mairei is an endemic and endangered plant species in China. The resources of T. chinensis var. mairei have been excessively exploited due to its anti-cancer potential, accordingly, the extant T. chinensis var. mairei population is decreasing. In this paper, ultrasonic extraction and HPLC were adopted to determine the contents of active components 7-xylosyltaxol and cephalomannine in cultivated and wild T. chinensis var. mairei plantsp,acwliittahxethl,e content distribution of these components in different parts of the plants having grown for different years and at different slope aspects investigated. There existed obvious differences in the contents of these active components between cultivated and wild T. chinensis var. mairei plants. The paclitaxel content in the wild plants was about 0. 78 times more than that in the cultivated plants, whereas the 7-xylosyltaxol and cephalomannine contents were slishtly higher in the cultivated plants. The differences in the three active components contents between different parts and tree canopies of the plants were notable, being higher in barks and upper tree canopies. Four-year old plants had comparatively higher contents of paclitaxel, 7-xylosyltaxol and cephalomannine (0. 08, 0. 91 and 0. 32 mg∙·g-1, respectively), and the plants growing at sunny slope had higher contents of the three ac-parent difference in the cephalomannine content of the plants at shady slope. It was suggested that the accumulation of the three active components in T. chinensis var. mairei plants were closely related to the sunshine conditions. To appropriately increase the sunshine during the artificial cultivation of T. chinensis var. mairei would be beneficial to the accumulation of the three active components in T. chinensis var. mairei plants.
- Subjects
CHINA; TAXUS; ENDEMIC plants; CULTIVARS; PLANT variation; PLANT populations; PLANT ecology
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2012, Vol 23, Issue 10, p2641
- ISSN
1001-9332
- Publication type
Article