亲电微生物及其催化的CO_2固定和合成
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摘要
亲电微生物是一类具有胞外电子摄取能力的电活性微生物,其胞外固相电子供体包括金属铁/钢、通电电极以及共生微生物细胞等。亲电微生物一般可利用胞外电子进行CO_2的还原和固定,因此将其作为微生物电合成体系的催化剂,可以实现外加清洁电能辅助的CO_2固定和能源及化学品的合成,为解决温室效应与能源危机问题提供崭新的思路。亲电微生物自身的代谢特性和电子摄取能力直接影响了整个电合成过程的可行性与能量转换效率。本文系统总结了目前研究确定的能够从金属铁/钢、通电电极以及共生微生物细胞中摄取电子的具体微生物,并对利用这些微生物催化的固定CO_2电合成应用研究进行了综述,最后从胞外电子传递机制、催化微生物选择以及基因工程手段改造等方面展望该领域未来的研究方向。
Electroautotrophic microorganisms can uptake electrons from extracellular solid donors such as metallic iron or steel,electrodes,and symbiotic microbial cells. Fuels and commodity chemicals can be produced from CO_2 in a bioelectrochemical system powered by electricity and catalyzed by electroautotrophic microorganisms since they are often able to reduce and fix CO_2. Thus,this provides a newand promising strategy to cope with the word energy crisis and greenhouse effect. Metabolic properties and electron uptake abilities of electroautotrophic microorganisms have direct and significant influences on viability and productivity of electrosynthesis processes. In this review,a diversity of microbial physiologies uptaking electrons from iron or steel,electrode and microbial cell,including sulphate reduction,methanogenesis,acetogenesis and nitrate reduction,are respectively summarized in the first place. Then,research progress of electrosynthesis of methane,acetate and other chemicals catalyzed by diverse electroautotrophic microorganisms are reviewed. And strategies for improving CO_2 fixation and electrosynthesis efficiency and diversifying the products are emphasized,such as defined co-culture construction,cathode material modification and so on. At last,research efforts in clarifying extracellular electron transfer mechanism,catalyzing microorganisms screening and co-culture construction,and genetic engineering of electroautotrophic microbes are proposed as future directions for researchers.
Electroautotrophic microorganisms can uptake electrons from extracellular solid donors such as metallic iron or steel,electrodes,and symbiotic microbial cells. Fuels and commodity chemicals can be produced from CO_2 in a bioelectrochemical system powered by electricity and catalyzed by electroautotrophic microorganisms since they are often able to reduce and fix CO_2. Thus,this provides a newand promising strategy to cope with the word energy crisis and greenhouse effect. Metabolic properties and electron uptake abilities of electroautotrophic microorganisms have direct and significant influences on viability and productivity of electrosynthesis processes. In this review,a diversity of microbial physiologies uptaking electrons from iron or steel,electrode and microbial cell,including sulphate reduction,methanogenesis,acetogenesis and nitrate reduction,are respectively summarized in the first place. Then,research progress of electrosynthesis of methane,acetate and other chemicals catalyzed by diverse electroautotrophic microorganisms are reviewed. And strategies for improving CO_2 fixation and electrosynthesis efficiency and diversifying the products are emphasized,such as defined co-culture construction,cathode material modification and so on. At last,research efforts in clarifying extracellular electron transfer mechanism,catalyzing microorganisms screening and co-culture construction,and genetic engineering of electroautotrophic microbes are proposed as future directions for researchers.
引文
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[2]李锋(Li F),宋浩(Song H).生物工程学报(Chinese Journal of Biotechnology),2017,33(3):516.
[3] Enning D,Garrelfs J. Appl. Environ. Microbiol.,2014,80(4):1226.
[4]许萍(Xu P),翟羽佳(Zhai Y J),高飞(Gao F),汪长征(Wang C Z),张雅君(Zhang Y J).腐蚀科学与防护技术(Corrosion Science and Protection Technology),2017,29(3):307.
[5] Dinh H T,Kuever J,Mussmann M,Hassel A W,Stratmann M,Widdel F. Nature,2004,427(6977):829.
[6] Venzlaff H,Enning D,Srinivasan J,Mayrhofer K J J,Hassel A W,Widdel F,Stratmann M. Corrosion Sci.,2013,66:88.
[7] Enning D, Venzlaff H, Garrelfs J, Dinh H T, Meyer V,Mayrhofer K,Hassel A W,Stratmann M,Widdel F. Environ.Microbiol.,2012,14(7):1772.
[8] Daniels L,Belay N,Rajagopal B S,Weimer P J. Science,1987,1987(237):4814.
[9] Uchiyama T,Ito K,Mori K,Tsurumaru H,Harayama S. Appl.Environ. Microbiol.,2010,76(6):1783.
[10] Kato S. Microb. Biotechnol.,2016,9(2):141.
[11] Mand J,Park H S,Jack T R,Voordouw G. Front. Microbiol.,2014,5:268.
[12] Kato S,Yumoto I,Kamagata Y. Appl. Environ. Microbiol.,2015,81(1):67.
[13] Xu D,Li Y,Song F,Gu T. Corrosion Sci.,2013,77:385.
[14] Jia R,Yang D,Xu J,Xu D,Gu T. Corrosion Sci.,2017,127:1.
[15] Gu T. J. Microbial. Biochem.Technol., 2012, 4(4): 3.
[16] Iino T,Ito K,Wakai S,Tsurumaru H,Ohkuma M,Harayama S. Appl. Environ. Microbiol.,2015,81(5):1839.
[17] Iino T,Sakamoto M,Ohkuma M. Int. J. Syst. Evol. Microbiol.,2015,65(9):2865.
[18] Cheng S,Xing D,Call DF,Logan BE. Environ. Sci. Technol.,2009,43(10):3953.
[19]朱华伟(Zhu H W),张延平(Zhang Y P),李寅(Li Y).中国科学:生命科学(SCIENTIA SINICA Vitae),2016,46(12):1388.
[20] Gregory K B,Bond D R,Lovley D R. Environ. Microbiol.,2004,6(6):596.
[21] Ishii T,Kawaichi S,Nakagawa H,Hashimoto K,Nakamura R.Front. Microbiol.,2015,6:994.
[22] Carbajosa S,Malki M,Caillard R,Lopez M F,Palomares F J,Martin-Gago J A,Rodriguez N,Amils R,Fernandez V M,De Lacey A L. Biosens. Bioelectron.,2010,26(2):877.
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[24] Bose A,Gardel E J,Vidoudez C,Parra E A,Girguis P R. Nat.Commun.,2014,5:3391.
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[27] Khunjar W O,Sahin A,West A C,Chandran K,Banta S. PLoS One,2012,7(9):e44846.
[28] Nichols E M,Gallagher J J,Liu C,Su Y,Resasco J,Yu Y,Sun Y,Yang P,Chang M C Y,Chang C J. Proc. Natl. Acad.Sci. U. S. A.,2015,112(37):11461.
[29] Beese-Vasbender P F,Grote J P,Garrelfs J,Stratmann M,Mayrhofer K J J. Bioelectrochemistry,2015,102:50.
[30] Nevin K P,Woodard T L,Franks A E,Summers Z M,Lovley D R. m Bio,2010,1(2):e00103.
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[44] Van Eerten-Jansen M C A A,Heijne A T,Buisman C J N,Hamelers H V M. Int. J. Energy Res.,2012,36(6):809.
[45] Fast A G,Papoutsakis E T. Curr. Opin. Chem. Eng.,2012,1(4):380.
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[47] Zhang T,Nie H,Bain T S,Lu H,Cui M,Snoeyenbos-West O L,Franks A E,Nevin K P,Russell T P,Lovley D R. Energy Environ. Sci.,2013,6(1):217.
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[49] Aryal N, Halder A, Tremblay P L, Chi Q, Zhang T.Electrochim. Acta,2016,217:117.
[50] Chen S, Fang Y, Jing X, Luo H, Chen J, Zhou S.Bioelectrochemistry,2018,121:151.
[51] Yu L,Yuan Y,Tang J,Zhou S. Bioelectrochemistry,2017,117:23.
[52] Bajracharya S,Yuliasni R,Vanbroekhoven K,Buisman C J,Strik D P,Pant D. Bioelectrochemistry,2017,113:26.
[53] Song T S,Fei K,Zhang H,Yuan H,Yang Y,Ouyang P,Xie J.J. Chem. Technol. Biotechnol.,2018,93(2):457.
[54] Song T S,Zhang H,Liu H,Zhang D,Wang H,Yang Y,Yuan H,Xie J. Bioresour. Technol.,2017,243:573.
[55] Ganigue R,Puig S,Batlle-Vilanova P,Balaguer M D,Colprim J. Chem. Commun.,2015,51(15):3235.
[56] Soussan L, Riess J, Erable B, Delia M L, Bergel A.Electrochem. Commun.,2013,28:27.
[57] Berzin V, Kiriukhin M, Tyurin M. Letters in Applied Microbiology,2012,55(2):149.
[58] Berzin V,Kiriukhin M,Tyurin M. Appl. Biochem. Biotechnol.,2012,167(2):338.
[59] Krieg T,Sydow A,Faust S,Huth I,Holtmann D. Angew.Chem. Int. Edit.,2018,57(7):1879.
[60] Lehtinen T,Efimova E,Tremblay P L,Santala S,Zhang T,Santala V. Bioresour. Technol.,2017,243:30.
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