Influence of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on ammonia-oxidizing bacteria and archaea in rhizosphere and bulk soil
Influence of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on ammonia-oxidizing bacteria and archaea in rhizosphere and bulk soil
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DOI：
10.1016/j.chemosphere.2011.02.086
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发表时间：
2011-06-01
期刊：
影响因子：
8.8
通讯作者：
Schloter, Michael
中科院分区：
文献类型：
--
作者：
Kleineidam, Kristina;Kosmrlj, Kristina;Schloter, Michael
在农业植物生产中，硝化抑制剂如3，4-二甲基吡唑磷酸盐（DMPP）用于延缓肥料铵的微生物硝化过程，以增强栽培作物的氮供应并减少生产系统的氮损失。除了众所周知的氨氧化细菌（AOB）之外，几年来已知氨氧化古菌（AOA）也能够进行硝化的第一步，因此也是硝化抑制剂的目标。然而，到目前为止，还没有关于DMPP的有效性及其对AOB和AOA的影响程度的信息，无论是在散装土壤还是在根际复合体中。在田间试验中，我们调查了DMPP对AOB和AOA丰度的影响，根据农业实践施肥后2，4和8周。我们观察到受损丰度的AOB，但AOA在两个土壤隔室仍然可见8周后的应用程序，可能表明在我们的研究中的硝化抑制剂的有效性降低。(C)2011爱思唯尔有限公司保留所有权利。
In agricultural plant production nitrification inhibitors like 3,4-dimethylpyrazole phosphate (DMPP) are used to retard the microbial nitrification process of fertilized ammonium to enhance the nitrogen supply for cultivated crops and to reduce nitrogen losses from the production system. Besides the well-known ammonia-oxidizing bacteria (AOB) it is known for a few years that also ammonia-oxidizing archaea (AOA) are able to perform the first step in nitrification, hence being also a target for a nitrification inhibitor. However, so far no information are available concerning the effectiveness of DMPP and its extent towards AOB and AOA, neither in bulk soil nor in the root-rhizosphere complex. We investigated in a field experiment performed according to agricultural practice the effect of DMPP on the abundance of AOB and AOA two, four and eight weeks after fertilization. We observed impaired abundances of AOB but not of AOA in both soil compartments that were still visible eight weeks after application, possibly indicating a reduced effectiveness of the nitrification inhibitor in our study. (C) 2011 Elsevier Ltd. All rights reserved.