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首页> 外文期刊>Environmental Science & Technology >Long-Term Fertilization Shapes the Putative Electrotrophic Microbial Community in Paddy Soils Revealed by Microbial Electrosynthesis Systems
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Long-Term Fertilization Shapes the Putative Electrotrophic Microbial Community in Paddy Soils Revealed by Microbial Electrosynthesis Systems

机译：长期施肥在微生物电气合成系统揭示的稻田中塑造推定的电辅助微生物群落

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摘要

Electrotrophs play an important role in biogeochemical cycles, but the effects of long-term fertilization on electrotrophic communities in paddy soils remain unclear. Here, we explored the responses of electrotrophic communities in paddy soil-based microcosms to different long-term fertilization practices using microbial electrosynthesis systems (MESs), high-throughput quantitative PCR, and 16s rRNA gene-based Illumina sequencing techniques. Compared to the case in the unfertilized soil (CK), applications of only manure (M); only chemical nitrogen, phosphorous, and potassium fertilizers (NPK); and M plus NPK (MNPK) clearly changed the electrotrophic bacterial community structure. The Streptomyces genus of the Actinobacteria phylum was the dominant electrotroph in the CK, M, and MNPK soils. The latter two soils also favored Truepera of Deinococcus- Thermus or Arenimonas and Thioalkalispira of Proteobacteria. Furthermore, Pseudomonas of Proteobacteria and Bacillus of Firmicutes were major electrotrophs in the NPK soil. These electrotrophs consumed biocathodic currents coupled with nitrate reduction and recovered 18-38% of electrons via dissimilatory nitrate reduction to ammonium (DNRA). The increased abundances of the nrjA gene for DNRA induced by electrical potential further supported that the electrotrophs enhanced DNRA for all soils. These expand our knowledge about the diversity of electrotrophs and their roles in N cycle in paddy soils and highlight the importance of fertilization in shaping electrotrophic communities.
机译：电镜在生物地球化学循环中发挥着重要作用，但长期施肥对水稻土的电抚养群的影响仍不清楚。在这里，我们探讨了使用微生物电气合成系统（混合物），高通量定量PCR和16S rRNA基因的illumina测序技术对不同长期施肥实践的电流社区对不同的长期施肥实践的反应。与未受精土壤（CK）中的情况相比，仅应用粪便（M）;只有化学氮，磷和钾肥（NPK）; M以及NPK（MNPK）清楚地改变了电递质细菌群落结构。肌动菌细菌的链霉菌属属属属Phylum是CK，M和MNPK土壤中的显性电镀。后两种土壤也有利于诱导毒蕈的Truepera和植物的植物和植物的植物孢子蛋白。此外，植物细菌和芽孢杆菌的假单胞菌在NPK土壤中是主要的电影。这些电镜消耗了与硝酸盐还原的生物疗法电流，并通过聚硝酸盐还原成铵（DNRO）来回收18-38％的电子。由电势诱导的DNRA的NRJA基因的增加的丰富进一步支持，电镜增强了所有土壤的DNRA。这些扩大了我们对水稻土的N循环中的电力多样性及其作用的知识，并突出了施肥在塑造电流社区中的重要性。

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  • 来源
    《Environmental Science & Technology》 |2021年第5期|3430-3441|共12页
  • 作者

    Xiao-Min Li; Long-Jun Ding; Dong Zhu; Yong-Guan Zhu;

  • 作者单位

    State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Key Lab of Urban Environment and Health Institute of Urban Environment and Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research Station Chinese Academy of Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China;

    State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China;

    State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China;

    State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences and Key Lab of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Beijing WOOSS China University of Chinese Academy of Sciences Beijing 100049 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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