Abstract—
The cultures assigned to the genus Thermoanaerobacterium according to the partial sequencing of the 16S rRNA gene were isolated on CM3 and GS2 media at 55°С from two laboratory methanogenic thermophilic cellulolytic microbial communities producing biogas from various paper substrates. Cellulolytic activity was shown for three isolates grown on solid and in liquid media with microcrystalline cellulose and filter paper as the only substrates. In order to compare the phylogenetic relations between these isolates and the reference strains of T. thermosaccharolyticum (DSM 571, M0795, and TG57), it was shown that the isolates I2 and I3 belonged to one cluster, whereas the I1 isolate formed a separate branch on the phylogenetic tree. A unique feature of isolate I2 is the formation of an insoluble yellow affinity substance (YAS), which is usually produced by certain anaerobic cellulolytic bacteria, such as Clostridium thermocellum; it is considered a binding component between the cellulase enzyme and its substrate, cellulose. Our results confirmed that cellulolytic T. thermosaccharolyticum strains predominated among cellulose-degrading bacteria within the thermophilic microbial communities converting the paper substrates into biogas. Although the type strain T. thermosaccharolyticum DSM 571 lacks cellulolytic capacity, our results are consistent with the recent data on the ability of several T. thermosaccharolyticum strains to degrade cellulose.
Similar content being viewed by others
REFERENCES
Atlas, R.M., Handbook of Microbiological Media, N.Y.: CRC, 2004.
Bergey’s Manual of Systematic Bacteriology: Volume 3: The Firmicutes, De Vos, P., Garrity, G.M., Jones, D., Krieg, N.R., Ludwig, W., Rainey, F.A., Schleifer, K.-H., and Whitman, W.B., Eds., Athens, USA: Springer, 2009.
He, Q., Hemme, C.L., Jiang, H., He, Z., and Zhou, J., Mechanisms of enhanced cellulosic bioethanol fermentation by co-cultivation of Clostridium and Thermoanaerobacter spp., Bioresour. Technol., 2011, vol. 102, pp. 9586–9592.
Jiang, H., Gadow, S.I., Tanaka, Y., Cheng, J., and Yu-You, L., Improved cellulose conversion to bio-hydrogen with thermophilic bacteria and characterization of microbial community in continuous bioreactor, Biomass Bioenergy., 2015, vol. 75, pp. 57−64.
Johnson, E.A., Madia, A., and Demain, A.L., Chemically defined minimal medium for growth of the anaerobic cellulolytic thermophile Clostridium thermocellum, Appl. Environ. Microbiol., 1981, vol. 41, pp. 1060–1062.
Koeck, D.E., Maus, I., Wibberg, D., Winkler, A., Zverlov, V.V., Liebl, W., Pühler, A., Schwarz, W.H., and Schlüter, A., Draft genome sequence of Herbinix hemicellulosilytica T3/55T, a new thermophilic cellulose degrading bacterium isolated from a thermophilic biogas reactor, J. Biotechnol., 2015, vol. 214, pp. 59–60.
Koeck, D.E., Pechtl, A., Zverlov, V.V., and Schwarz, W.H., Genomics of cellulolytic bacteria, Curr. Opin. Biotechnol., 2014, vol. 29, pp. 171–183.
Kopečný, J. and Hodrova, B., The effect of yellow affinity substance on cellulases of Ruminococcus flavefaciens, Lett. Appl. Microbiol., 1997, vol. 25, pp. 191–196.
Li, T., Zhang, C., Yang, K.L., and He, J., Unique genetic cassettes in a Thermoanaerobacterium contribute to simultaneous conversion of cellulose and monosugars into butanol, Sci. Adv., 2018, vol. 4, e1701475.
Ljungdahl, L.G., Pettersson, B., Eriksson, K.E., and Wiegel, J., A yellow affinity substance involved in the cellulolytic system of Clostridium thermocellum., Curr. Microbiol., 1983, vol. 9, pp. 195–199.
Lv, W. and Yu, Z., Isolation and characterization of two thermophilic cellulolytic strains of Clostridium thermocellum from a compost sample, J. Appl. Microbiol., 2013, vol. 114, pp. 1001–1007.
Lynd, L.R., Weimer, P.J., Van Zyl, W.H., and Pretorius, I.S., Microbial cellulose utilization: fundamentals and biotechnology, Microbiol. Mol. Biol. R., 2002, vol. 66, pp. 506–577.
O-Thong, S., Prasertsan, P., Karakashev, D., and Angelidaki, I., Thermophilic fermentative hydrogen production by the newly isolated Thermoanaerobacterium thermosaccharolyticum PSU-2, Int. J. Hydrogen Energ., 2008, vol. 33, pp. 1204–1214.
Pei, J., Pang, Q., Zhao, L., Fan, S., and Shi, H., Thermoanaerobacterium thermosaccharolyticum β-glucosidase: a glucose-tolerant enzyme with high specific activity for cellobiose, Biotechnol. Biofuels, 2012, vol. 5, p. 31.
Podosokorskaya, O.A., Merkel, A.Y., Kolganova, T.V., Chernyh, N.A., Miroshnichenko, M.L., Bonch-Osmolovskaya, E.A., and Kublanov, I.V., Fervidobacterium riparium sp. nov., a thermophilic anaerobic cellulolytic bacterium isolated from a hot spring, Int. J. Syst. Evol. Micro-biol., 2011, vol. 61, pp. 2697–2701.
Prokudina, L.I., Osmolovskiy, A.A., Egorova, M.A., Malakhova, D.V., Netrusov, A.I., and Tsavkelova, E.A., Biodegradation of cellulose-containing substrates by micromycetes followed by bioconversion into biogas, Appl. Biochem. Microbiol., 2016, vol. 52, pp. 190–198.
Rabinovich, M.L. and Mel’nik, M.S., Progress in investigation of cellulolytic enzymes and the mechanism for biodegradation of highly ordered cellulose forms, Usp. Biol. Khim., 2000, vol. 40, pp. 205–266.
Shaw, A.J., Hogsett, D.A., and Lynd, L.R., Natural competence in Thermoanaerobacter and Thermoanaerobacterium species, Appl. Environ. Microbiol., 2010, vol. 76, pp. 4713–4719.
Sizova, M.V., Izquierdo, J.A., Panikov, N.S., and Lynd, L.R., Cellulose- and xylan-degrading thermophilic anaerobic bacteria from biocompost, Appl. Environ. Microbiol., 2011, vol. 77, pp. 2282–2291.
Sun, Y. and Cheng, J., Hydrolysis of lignocellulosic materials for ethanol production: a review, Bioresour. Technol., 2002, vol. 83, pp. 1–11.
Tsavkelova, E.A. and Netrusov, A.I., Biogas production from cellulose-containing substrates (a review), Appl. Biochem. Microbiol., 2012, vol. 48, pp. 421–433.
Tsavkelova, E.A., Egorova, M.A., Petrova, E.V., and Netrusov, A.I., Biogas production by microbial communities via decomposition of cellulose and food waste, Appl. Biochem. Microbiol., 2012, vol. 48, pp. 377–384.
Tsavkelova, E., Prokudina (Popova), L., Egorova, M., Leontieva, M., Malakhova, D., and Netrusov, A., The structure of the anaerobic thermophilic microbial community for the bioconversion of the cellulose-containing substrates into biogas, Process Biochem., 2018, vol. 66, pp. 183–196.
VanFossen, A.L., Lewis, D.L., Nichols, J.D., and Kelly, R.M., Polysaccharide degradation and synthesis by extremely thermophilic anaerobes, Ann. N.Y. Acad. Sci., 2008, vol. 1125, pp. 322–337.
Velikodvorskaya, G.A., Chekanovskaya, L.A., Lunina, N.A., Dvortsov, I.A., Zverlov, V.V., Sergienko, O.V., and Lunin, V.G., Family 28 carbohydrate-binding module of the thermostable endo-1,4-β-glucanase CelD from Caldicellulosiruptor bescii maximizes enzyme activity and irreversibly binds to amorphous cellulose, Mol. Biol., 2013, vol. 47, pp. 581–586.
Vishnivetskaya, T.A., Hamilton-Brehm, S.D., Podar, M., Mosher, J.J., Palumbo, A.V., Phelps, T.J., Keller, M., and Elkins, J.G., Community analysis of plant biomass-degrading microorganisms from Obsidian Pool, Yellowstone National Park, Microb. Ecol., 2015, vol. 69, pp. 333–345.
Zarafeta, D., Kissas, D., Sayer, C., Gudbergsdottir, S.R., Ladoukakis, E., Isupov, M.N., Chatziioannou, A., Peng, X., Littlechild, J.A., Skretas, G., and Kolisis, F.N., Discovery and characterization of a thermostable and highly halotolerant GH5 cellulase from an icelandic hot spring isolate, PLoS One, 2016, vol. 11, e0146454.
ACKNOWLEDGMENTS
L.I. Popova thanks the German Academy Exchange Service (Deutscher Akademischer Austauschdienst, DAAD) and the Federation of European Microbiological Societies (FEMS) for a scholarship that enabled the collaboration with the Microbiology Department of Rostock University (Germany).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
COMPLIANCE WITH ETHICAL STANDARDS
This article does not contain any studies involving humans or animals performed by any of the authors.
CONFLICT OF INTERESTS
The authors declare that they have no conflict of interests.
Additional information
Translated by A. Oleskin
Rights and permissions
About this article
Cite this article
Popova, L.I., Bahl, H., Egorova, M.A. et al. Isolation of Cellulose-Degrading Thermoanaerobacterium Strains from Thermophilic Methanogenic Microbial Communities. Microbiology 90, 158–165 (2021). https://doi.org/10.1134/S0026261721020090
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0026261721020090