Differences in microbial community structure and nitrogen cycling in natural and drained tropical peatland soils.
Differences in microbial community structure and nitrogen cycling in natural and drained tropical peatland soils.
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DOI：
10.1038/s41598-018-23032-y
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发表时间：
2018-03-16
影响因子：
4.6
通讯作者：
Truu J
中科院分区：
文献类型：
--
作者：
Espenberg M;Truu M;Mander Ü;Kasak K;Nõlvak H;Ligi T;Oopkaup K;Maddison M;Truu J
热带泥炭地在维持各种生态系统服务方面发挥着关键作用，但由于农业、林业、泥炭开采和人类住区的目的，泥炭地的排水量日益增加。本研究探讨了热带泥炭地的自然和排水站点之间的差异，在土壤细菌和古菌的群落结构和他们的潜力，进行氮转化过程。结果表明，土壤细菌和古菌群落结构以及nirK、nirS、nosZ、nifH和古菌amoA基因的微生物群落结构存在显著差异。在排水的热带泥炭地土壤中检测到减少的反硝化和固氮潜力。在原状泥炭地土壤中，N2O的排放主要与nirS型硝化细菌和异化硝酸盐还原为铵有关，而N2O向N2的转化则由具有nosZ进化枝I基因的微生物控制。排水场地土壤微生物群落与自然场地土壤微生物群落差异显著。N2O的主要还原菌是携带nosZ基因的微生物。此外，DNRA过程的重要性，作为控制机制之一，在热带天然泥炭地的N2O通量的研究结果揭示。
Tropical peatlands, which play a crucial role in the maintenance of different ecosystem services, are increasingly drained for agriculture, forestry, peat extraction and human settlement purposes. The present study investigated the differences between natural and drained sites of a tropical peatland in the community structure of soil bacteria and archaea and their potential to perform nitrogen transformation processes. The results indicate significant dissimilarities in the structure of soil bacterial and archaeal communities as well as nirK, nirS, nosZ, nifH and archaeal amoA gene-possessing microbial communities. The reduced denitrification and N2-fixing potential was detected in the drained tropical peatland soil. In undisturbed peatland soil, the N2O emission was primarily related to nirS-type denitrifiers and dissimilatory nitrate reduction to ammonium, while the conversion of N2O to N2 was controlled by microbes possessing nosZ clade I genes. The denitrifying microbial community of the drained site differed significantly from the natural site community. The main reducers of N2O were microbes harbouring nosZ clade II genes in the drained site. Additionally, the importance of DNRA process as one of the controlling mechanisms of N2O fluxes in the natural peatlands of the tropics revealed from the results of the study.
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影响因子：
3.7
作者：
Gaby JC;Buckley DH
通讯作者：
Buckley DH
影响因子：
10.5
作者：
Lewin GR;Carlos C;Chevrette MG;Horn HA;McDonald BR;Stankey RJ;Fox BG;Currie CR
通讯作者：
Currie CR
影响因子：
3
作者：
Han MV;Zmasek CM
通讯作者：
Zmasek CM
影响因子：
11.6
作者：
Gumbricht, Thomas;Roman-Cuesta, Rosa Maria;Murdiyarso, Daniel
通讯作者：
Murdiyarso, Daniel
影响因子：
64.8
作者：
Daims, Holger;Lebedeva, Elena V.;Pjevac, Petra;Han, Ping;Herbold, Craig;Albertsen, Mads;Jehmlich, Nico;Palatinszky, Marton;Vierheilig, Julia;Bulaev, Alexandr;Kirkegaard, Rasmus H.;von Bergen, Martin;Rattei, Thomas;Bendinger, Bernd;Nielsen, Per H.;Wagner, Michael
通讯作者：
Wagner, Michael