典型文献
PICRUSt2 functionally predicts organic compounds degradation and sulfate reduction pathways in an acidogenic bioreactor
文献摘要：
For comprehensive insights into the influences of sulfate on performance,microbial community and metabolic pathways in the acidification phase of a two-phase anaerobic system,a laboratory-scale acidogenic bioreactor was continuously operated to treat wastewater with elevated sulfate concentrations from 2000 to 14000 mg/L.The results showed that the acidogenic bioreactor could achieve sulfate reduction efficiency of greater than 70％for influent sulfate content less than 12000 mg/L.Increased sulfate induced the accumulation of volatile fatty acids(VFAs),especially propionate and butyrate,which was the primary negative effects to system performance under the high-sulfate environment.High-throughput sequencing coupled with PICRUSt2 uncovered that the accumulation of VFAs was triggered by the decreasing of genes encoding short-chain acyl-CoA dehydrogenase(EC:1.3.8.1),regulating the transformation of propanoyl-CoA to propenoyl-CoA and butanoyl-CoA to crotonyl-CoA of propionate and butyrate oxidation pathways,which made these two process hardly proceed.Besides,genes encoding(EC:1.3.8.1)were mainly carried by order Clostridiales.Desulfovibrio was the most abundant sulfate-reducing bacteria and identified as the primary host of dissimilatory sulfate reduction functional genes.Functional analysis indicated the dissimilatory sulfate reduction process predominated under a low sulfate environment,but was not favored under the circumstance of high-sulfate.With the increase of sulfate,the assimilatory sulfate reduction process finally overwhelmed dissimilatory as the dominant sulfate reduction pathway in acidogenic bioreactor.
文献关键词：
中图分类号：
作者姓名：
Jun Li;Aimin Li;Yan Li;Minhui Cai;Gan Luo;Yaping Wu;Yechao Tian;Liqun Xing;Quanxing Zhang
作者机构：
State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210023,China;Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse,School of Environmental and Biological Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
文献出处：
引用格式：
[1]Jun Li;Aimin Li;Yan Li;Minhui Cai;Gan Luo;Yaping Wu;Yechao Tian;Liqun Xing;Quanxing Zhang-.PICRUSt2 functionally predicts organic compounds degradation and sulfate reduction pathways in an acidogenic bioreactor)[J].环境科学与工程前沿,2022(04):81-93
A类：
acidogenic,propanoyl,propenoyl,butanoyl,crotonyl
B类：
PICRUSt2,functionally,predicts,organic,compounds,degradation,sulfate,reduction,pathways,bioreactor,For,comprehensive,insights,into,influences,performance,microbial,community,metabolic,acidification,phase,two,anaerobic,system,laboratory,scale,continuously,operated,treat,wastewater,elevated,concentrations,from,results,showed,that,could,achieve,efficiency,greater,than,influent,content,less,Increased,induced,accumulation,volatile,fatty,acids,VFAs,especially,propionate,butyrate,which,primary,negative,effects,under,high,environment,High,throughput,sequencing,coupled,uncovered,triggered,by,decreasing,genes,encoding,short,chain,acyl,CoA,dehydrogenase,EC,regulating,transformation,oxidation,made,these,process,hardly,proceed,Besides,were,mainly,carried,order,Clostridiales,Desulfovibrio,most,abundant,reducing,bacteria,identified,host,dissimilatory,Functional,analysis,indicated,predominated,low,not,favored,circumstance,With,increase,assimilatory,finally,overwhelmed,dominant
AB值：
0.531027
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