Ethylene oxidation, atmospheric methane consumption, and ammonium oxidation in temperate volcanic forest soils
Ethylene oxidation, atmospheric methane consumption, and ammonium oxidation in temperate volcanic forest soils
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温带火山森林土壤中的乙烯氧化、大气甲烷消耗和铵氧化
DOI：
10.1007/s00374-008-0324-0
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发表时间：
2009-02
影响因子：
6.5
通讯作者：
Inubushi, Kazuyuki
中科院分区：
文献类型：
--
作者：
Xu, Xingkai;Inubushi, Kazuyuki
不同林分下的温带火山森林表层土壤（例如，欧洲赤松，以柳杉（Cryptomeriajaponica）和锯齿栎（Quercusserrata）为试材，研究了乙烯（C2 H4）氧化动力学和抑制大气甲烷（CH 4）氧化和硝化作用的C2 H4浓度。在温带火山森林土壤中C2 H4氧化的动力学是双相的，表明至少有两种不同的微生物种群，一个具有低的和另一个具有高的表观Km值，是负责乙烯氧化。乙烯处理抑制了土壤甲烷消耗活性和铵态氮氧化。添加3、10和20 μl C2 H4/L的顶空气体分别使土壤对大气CH 4的消耗量减少20%、50%和100%，且这些值远小于抑制铵氧化的值，因此，土壤对CH 4的消耗活性对添加C2 H4比铵氧化更敏感。以往的研究表明，在好氧和厌氧培养的3天内，这种火山森林土壤中C2 H4的积累可以分别达到0.2 - 0.3和1.0 - 3.0 μl C2 H4/L的顶空气体。这表明，C2 H4生产下的森林地板，特别是大雨后，可以在一定程度上影响森林表层土壤消耗大气CH 4的能力，但可能，它没有影响铵氧化。
Temperate volcanic forest surface soils under different forest stands (e.g.,Pinus sylvestrisL.,Cryptomeria japonica, andQuercus serrata) were sampled to study the kinetics of ethylene (C2H4) oxidation and the C2H4concentrations that effectively inhibit oxidation of atmospheric methane (CH4) and nitrification. The kinetics of C2H4oxidation in temperate volcanic forest soils was biphasic, indicating that at least two different microbial populations, one with low and another with high apparentKmvalues, were responsible for ethylene oxidation. Methane consumption activity and ammonium oxidation of soil were inhibited by adding ethylene. Added C2H4at concentrations of 3, 10, and 20 μl C2H4per liter in the headspace gas respectively reduced by 20%, 50%, and 100% atmospheric CH4consumption by soil, and these values were much smaller than those inhibiting ammonium oxidation in these forest soils; thus, the CH4consumption activity was more sensitive to the addition of C2H4than ammonium oxidation. Previous studies have shown that accumulation of C2H4in such volcanic forest soils within 3 days of aerobic and anaerobic incubations can reach a range from 0.2 to 0.3 and from 1.0 to 3.0 μl C2H4per liter in the headspace gas, respectively. It is suggested that C2H4production beneath forest floors, particularly after heavy rain, can to some extent affect the capacity of forest surface soils to consume atmospheric CH4, but probably, it has no impact on ammonium oxidation.
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DOI：
10.1128/mr.53.1.68-84.1989
发表时间：
1989-03
期刊：
Microbiological Reviews
影响因子：
--
作者：
C. Bédard;R. Knowles
通讯作者：
C. Bédard;R. Knowles
影响因子：
--
作者：
R. Tate
通讯作者：
R. Tate
影响因子：
4.2
作者：
Xingkai Xu;K. Inubushi
通讯作者：
Xingkai Xu;K. Inubushi
影响因子：
6.1
作者：
Xingkai Xu;K. Inubushi;K. Sakamoto
通讯作者：
Xingkai Xu;K. Inubushi;K. Sakamoto
影响因子：
6.5
作者：
Xingkai Xu;K. Inubushi
通讯作者：
Xingkai Xu;K. Inubushi