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Volume 7 Issue 2
Apr.  2012
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Wang Huiying, Huang Weinan. Characteristics of Symbiotic Nitrogen Fixation by Myrica rubra[J]. Fujian Journal of Agricultural Sciences, 1992, 7(2): 48-52.
Citation: Wang Huiying, Huang Weinan. Characteristics of Symbiotic Nitrogen Fixation by Myrica rubra[J]. Fujian Journal of Agricultural Sciences, 1992, 7(2): 48-52.

Characteristics of Symbiotic Nitrogen Fixation by Myrica rubra

  • Received Date: 1991-07-19
  • Publish Date: 1992-11-15
  • Myrica rubra is not only a subtropical tree but also a Actinomycete-nodulated plant. Root nodules of Myrica rubra have a nitrogen-fixing activity. The nitrogenase activity of exised nodules can last 4-5 hours and keep a higher activity. The nitrogen-fixing activities of nodules were determined separately, the highest activity was found in the matured nodules. The optimum temperature for nitrogen fixation of exised nodules ranged 25-30℃, the highest is at 30℃ Both nitrogenase activity of the seedlings with root nodules and nitrate reductase activity (NRA) in seedling leaves are inhibited by NO3-. However, the inhibition of NRA in the plants with or without nodules has a certain difference. The root nodules of Myrica rubra contain a hydrogen-absorbing enzyme which can increase effectively nitrogenase activity.
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  • [1]
    F. H.魏海姆,D. F.鲍勒德斯,R. M.戴威林著(中国科学院植物研究所生理生化研究室译). 1974.《植物生理学实验》.1-6.科学出版社,北京
    [2]
    苏梦云,周云璋. 1986.树木组织中NR测定方法.林业科技通讯,7:25-27
    [3]
    陈薇,张德颐.1980.植物组织中NR的提取、测定及纯化.植物生理学通讯,4,45-99
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