Tian Dong

Publications (2)1.66 Total impact

• Source

  Available from: Wei Chen

  Article: Changes of main secondary metabolites in leaves of Ginkgo biloba in response to ozone fumigation

  Xingyuan HE, Wei HUANG, Wei CHEN, Tian DONG, Changbing LIU, Zhenju CHEN, Sheng XU, Yanan RUAN
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  ABSTRACT: To investigate the effect of elevated O3 on the accumulation of main secondary metabolites in leaves of Ginkgo biloba L., four-year-old trees were exposed in open-top chambers with ambient air and the air with twice ambient O3 concentration in Shenyang in 2006. Elevated O3 increased the concentrations of terpenes, but decreased the concentrations of phenolics in G. biloba leaves. The results showed that secondary compounds from G. biloba leaves responded to the elevated O3 exposure in a different way when compared to previous studies which showed elevated O3 increased the concentrations of phenolics but had no effect on the terpenes in leaves of other deciduous trees. Furthermore, reduced synthesis of phenolics may decrease the resistance of G. biloba to O3 and other environmental factors. On the other hand, the induced synthesis of terpenes may enhance the antioxidant abilities in G. biloba leaves at the end of O3 fumigation.
  Journal of Environmental Sciences 02/2009; · 1.66 Impact Factor
• Article: [Genetic diversity of arbuscular mycorrhizal fungi associated with four Alnus species in Changbai Mountains: a nested PCR-rFLP analysis].

  Tian Dong, Huiwen Zhang, Yue Zhang, Xingyuan He
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  ABSTRACT: In this paper, the colonization of arbuscular mycorrhizal fungi (AMF) on the root samples of 4 Alnus species in Changbai Mountains was investigated by using nested PCR-RFLP technique, and the PCR results were tested by restriction endonuclease analysis method. The results revealed that the uncultured AMF had a high genetic diversity, and the colonization had a trend from promiscuity to specialization. The AMF from Alnus mandshuica showed the greatest specialization to the host, and Glomus was the dominant colonizer of A. mandshuica. The AMF from A. sibirica var. hirsuta, A. sibirica, and A. tinctoria showed promiscuity, and host had more significant effects on the colonization of AMF than altitude.
  Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban 11/2006; 17(10):1796-800.