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Acta Prataculturae Sinica ›› 2010, Vol. 19 ›› Issue (6): 215-221.

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Spatial variation of ergot alkaloids in drunken horse grass infected by Neotyphodium gansuense

DAI Le-ying, HUANG Xi, LI Chun-jie, NAN Zhi-biao   

  1. College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, China
  • Received:2009-07-24 Online:2010-06-25 Published:2010-12-20

Abstract: Ergot alkaloids were detrected in drunken horse grass (Achnatherum inebrians)-Neotyphodium gansuense endophyte symbionts taken from 5 different geographical sites: Hami in Xinjiang (HM), Tiebujia in Qinghai (TBJ), Sunan (SN), Tianzhu (TZ) and Xiahe (XH) in Gansu in September 2007. Different ergine and ergonovine contents were found in different organs of drunken horse grass and the ergonovine contents were significantly greater than those of ergine (P<0.05). The ergine, ergonovine and total alkaloid contents (53.656, 117.784 and 160.816 mg/kg dry matter, respectively) were highest in plants from HM except in the leaf sheaths. Correlation analyses indicated that ergine, ergonovine and total alkaloid contents of leaf blades, stems and heads of plants were positively related to the annual average temperature.

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