A list of cellulolytic bacteria
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This list contains all truly cellulolytic bacterial species described in the literature (I am aware of) as substantially hydrolyzing crystalline cellulose and/or fermenting crystalline cellulose as sole carbon source. "Substantial" hydrolysis means continuous hydrolysis of at least microcrystalline cellulose like Avicel, or better filter paper, cotton linters, bacterial cellulose or the like - this is more than just e.g. initial activity on Avicel (e.g. release of reducing equivalents). The species are arranged by a superposition of the phylogenetic tree derived from calculation of 16 S rRNA sequences with the ARB program package (go to the Microbiology homepage), and the new taxonomic system published in Bergey´s Manual of Systematic Bacteriology (Garrity, 2001). Such a list will never be complete. So if you have data on a bacterial species which clearly show, that it grows on crystalline cellulose, please let me know. Wolfgang H. Schwarz (e-mail) |
| Phylogeny | Genus | Species |
|
Source |
|
Reference | ||||||
| Phylum Firmicutes, Class Clostridia, Order Clostridiales | ||||||||||||
| Fam. Syntrophomonodaceae | Caldocellulosiruptor | saccharolyticus |
|
hot spring |
|
Rainey et al. 1994 | ||||||
| Caldocellulosiruptor | lactoaceticus |
|
Mladenovska et al. 95 | |||||||||
| Caldocellulosiruptor | kristjanssonii |
|
hot spring |
|
Bredholt et al., 1999 | |||||||
| "Anaerocellum" | thermophilum |
|
|
Svetlichnyi et al. 1990 | ||||||||
| Fam. Lachnospiraceae | Butyrivibrio | fibrisolvens |
|
rumen |
|
Berger et al. 1990 | ||||||
| Ruminococcus | flavefaciens |
|
rumen |
|
Aurilia et al. 2000 | |||||||
| Ruminococcus | succinogenes |
|
rumen | Fields et al. 2000 | ||||||||
| Ruminococcus | albus |
|
rumen |
|
Ohara et al. 2000 | |||||||
| Fam. Eubacteriaceae | Eubacterium | cellulolyticum |
|
rumen | Anderson & Blair 96 | |||||||
| Fam. Clostridiaceae | Clostridium | acetobutylicum |
|
soil |
|
From sequence | ||||||
| Clostridium | chartatabidum |
|
rumen | Kelly et al. 1987 | ||||||||
| Clostridium | cellulovorans |
|
wood fermenter |
|
Shoseyov et al. 1992, Tamaru et al. 2000 | |||||||
| Clostridium | herbivorans |
|
pig intestine | Varel et al. 1995 | ||||||||
| Clostridium | cellulosi |
|
manure | Yanling et al. 1991 | ||||||||
| Clostridium | cellobioparum |
|
rumen |
|
Lamed et al. 1987 | |||||||
| Clostridium | papyrosolvens |
|
paper mill |
|
Pohlschröder et al. 94 | |||||||
| Clostridium | josui |
|
compost |
|
Kakiuchi et al., 1998 | |||||||
| Clostridium | cellulolyticum |
|
compost |
|
Pagés et al. 1997, Belaich et al. 1997 | |||||||
| Clostridium | aldrichii |
|
wood fermenter | Yang et al. 1990 | ||||||||
| Clostridium | stercorarium |
|
compost |
|
Schwarz et al. 1995 | |||||||
| Clostridium | thermocellum |
|
sewage + soil |
|
Lamed et al. 1991 | |||||||
| Clostridium | cellulofermentans |
|
manure | Yanling et al. 1991 | ||||||||
| Clostridium | celerescens |
|
manure | Palop et al. 1989 | ||||||||
| Clostridium | thermopapyrolyticum |
|
mud | Mendez et al. 1991 | ||||||||
| Clostridium | thermocopriae |
|
hot spring | Jin & Toda 1989 | ||||||||
| Clostridium | sp. C7 |
|
mud |
|
Cavedon et al. 1990 | |||||||
| Bacteroides | sp. P-1 |
|
rotting biomass |
|
Ponpium et al. 2000 | |||||||
| Bacteroides | cellulosolvens |
|
sewage |
|
Lamed et al. 1991 | |||||||
| Acetivibrio | cellulolyticus |
|
sewage |
|
Ding et al. 1999 | |||||||
| Acetivibrio | cellulosolvens |
|
sewage | Khan et al. 1984 | ||||||||
| Phylum Firmicutes, Class Bacilli, Order Bacillales | ||||||||||||
| Fam. Thermoactinomycetaceae | Thermoactinomyces | sp. YX |
|
Hägerdahl et al., 1979 | ||||||||
| Caldibacillus | cellulovorans |
|
Sunna et al. 2000 | |||||||||
| Fam. Bacillaceae | Bacillus | circulans |
|
Kim 1995 | ||||||||
| Phylum Actinobacteria, Order Actinomycetales | ||||||||||||
Subord. Frankineae, Fam. Acidothermaceae |
Acidothermus | cellulolyticus |
|
acidic hot spring |
|
Eppard et al. 1996; Maréchal et al. 2000 |
||||||
| Cellulomonas | biazotea |
|
Lednicka et al 2000 | |||||||||
Subord. Micromonosporineae, Fam. Cellulomonadaceae |
Cellulomonas | cartae |
|
Thayer et al. 1984 | ||||||||
| Cellulomonas | cellasea |
|
Lednicka et al. 2000 | |||||||||
| Cellulomonas | cellulans |
|
soil | Lednicka et al. 2000 | ||||||||
| Cellulomonas | fimi |
|
soil |
|
Lednicka et al. 2000 | |||||||
| Cellulomonas | flavigena |
|
soil | Lednicka et al. 2000 | ||||||||
| Cellulomonas | gelida |
|
Thayer et al. 1984 | |||||||||
| Cellulomonas | iranensis |
|
forest soil |
|
Elberson et al. 2000 | |||||||
| Cellulomonas | persica |
|
forest soil |
|
Elberson et al. 2000 | |||||||
| Cellulomonas | uda |
|
sewage |
|
Thayer et al. 1984 | |||||||
| Curtobacterium | falcumfaciens |
|
soil | Lednicka et al. 2000 | ||||||||
| Fam. Microbacteriaceae | Micromonospora | melonosporea |
|
compost | Wilson 1992 | |||||||
| Fam. Micromonosporaceae | Actinoplanes | aurantiaca |
|
soil | Coughlan & Mayer 92 | |||||||
| Streptomyces | reticuli |
|
soil | Schrempf & Walter 96 | ||||||||
Suborder Streptomycineae, Fam. Streptomycetaceae |
Streptomyces | alboguseolus |
|
Van Zyl 1985 | ||||||||
| Streptomyces | aureofaciens |
|
compost | El-Din et al. 2000 | ||||||||
| Streptomyces | cellulolyticus |
|
Li 1997 | |||||||||
| Streptomyces | flavogriseus |
|
soil | MacKenzie et al. 1984 | ||||||||
| Streptomyces | lividans |
|
Kluepfel et al. 1986 | |||||||||
| Streptomyces | nitrosporeus |
|
Van Zyl 1985 | |||||||||
| Streptomyces | olivochromogenes | Coughlan & Mayer 92 | ||||||||||
| Streptomyces | rochei |
|
termite gut | Perito et al. 1994 | ||||||||
| Streptomyces | thermovulgaris | Coughlan & Mayer 92 | ||||||||||
| Streptomyces | viridosporus | Coughlan & Mayer 92 | ||||||||||
Subord. Streptosporangiaceae, Fam. Nocardiopsaceae |
Thermobifida | alba |
|
Kukolya, pers. commun. | ||||||||
| Thermobifida (Thermomonospora) | fusca |
|
soil | d | Wilson 1992; Kukolya, pers. commun. 2003 | |||||||
| Thermobifida | cellulolytica |
|
compost | Kukolya et al. 2002 | ||||||||
| Thermomonospora | curvata |
|
Coughlan & Mayer 92 | |||||||||
| Microbispora | bispora |
|
soil | Wilson 1992 | ||||||||
| Fam. Streptosporangiaceae | ||||||||||||
| Phylum Fibrobacteres, Class Fibrobacteres, Order Fibrobacterales | ||||||||||||
| Fam. Fibrobacteriaceae | Fibrobacter | succinogenes | m | rumen | +d | Schellhorn & Forsberg 1984 | ||||||
| Phylum Bacteroidetes, Class Sphingobacteria, Order Sphingobacteriales | ||||||||||||
| Fam. Flexibacteriaceae | Sporocytophaga | myxococcoides |
|
soil | Coughlan & Mayer 92 | |||||||
| Cytophaga | sp. | m | soil | Mullings et al. 1984 | ||||||||
| Phylum Bacteroidetes, Class Flavobacteria, Order Flavobacteriales | ||||||||||||
| Fam. Flavobacteriaceae | Flavobacterium | johnsoniae | m | soil | Lednicka et al. 2000 | |||||||
| Phylum Proteobacteria, Class Betaproteobacteria, Order Burkholderiales | ||||||||||||
| Fam. Alcaligenaceae | Achromobacter | piechaudii | m | soil | Lednicka et al. 2000 | |||||||
| Phylum Proteobacteria, Class Gammaproteobacteria, Order Xanthomonadales | ||||||||||||
| Fam. Xanthomonadaceae | Xanthomonas | sp. | m | brack water | Mullings et al. 1984 | |||||||
| Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales | ||||||||||||
| Fam. Pseudomonaceae | Cellvibrio | vulgaris, fulvus |
|
soil | Blackall et al. 1985 | |||||||
| Cellvibrio | gilvus |
|
soil | Coughlan & Mayer 92 | ||||||||
| Cellvibrio | mixtus |
|
soil | Lednicka et al. 2000 | ||||||||
| Pseudomonas | fluorescens (cellulosa) |
|
plant pathogen |
|
Dees et al. 1995 | |||||||
| Pseudomonas | mendocina |
|
soil | Lednicka et al. 2000 | ||||||||
| Phylum Proteobacteria, Class Deltaproteobacteria | ||||||||||||
| Fam. unclassified | Myxobacter | sp. AL-1 | m | soil | Avitia et al. 2000, Pedraza-Reyes (pers. commun.) | |||||||
Last update 24.04.2003, © W. Schwarz, TUM, Microbiology
Legend: Temp, growth temperature: m, mesophilic; h, thermophilic (growth optimum above 50 °C). Co, presence of cellulosomes; evidence: a) presence of dockerin of cohesin sequences; b) biochemical evidence (multienzyme complexes); c) reaction with Ct-CipA-scaffoldin antibodies; d) presence of cell protuberances in electron microscopy.
Acknowledgements: I thank all collegues who contributed to this page for personal communication of unpublished results.
References:
A number of reviews has been published recently giving an overview:
- Bayer EA, Morag E, Lamed R, Yaron S, Shoham Y (1998) Cellulosome structure: four-pronged attack using biochemistry, molecular biology, crystallography and bioinformatics. In Carbohydrates from Trichoderma reesei and other microorganisms. (M. Claeyssens, W. Nerinckx and K. Piens, eds.). pp. 39-65. The Royal Society of Chemistry, London
- Coughlan MP, Mayer F (1992) The cellulose-decomposing bacteria and their enzyme systems. In The Prokaryotes: a handbook on the biology of bacteria. 2ns edn., p. 460-516. Edited by Balows A, Trüper HG, Dworkin M, Harder W, Schleifer KH. Springer-Verlag, New York
- Doi RH, Goldstein M, Hashida S, Park JS, Takagi M (1994) The Clostridium cellulovorans cellulosome. Crit Rev Microbiol 20: 87-93
- Doi RH, Park JS, Liu CC, Malburg LM, Tamaru Y, Ichiishi A, Ibrahim A (1998) Cellulosome and noncellulosomal cellulases of Clostridium cellulovorans. Extremophiles 2: 53-60
- Gal L, Pagés S, Gaudin C, Belaich A, Reverbel-leroy C, Tardif C, Belaich JP (1997) Characterization of the cellulolytic complex (cellulosome) produced by Clostridium cellulolyticum. Appl Environ Microbiol 63: 903-909
- Guglielmi G, Béguin P (1998) Cellulase and hemicellulase genes of Clostridium thermocellum from five independent collections contain few overlaps and are widely scattered across the chromosome. FEMS Microbiol Let 161: 209-215
- Himmel ME, Ruth MF, Wyman CE (1999) Cellulase for commodity products from cellulosic biomass. Curr Opin Biotechnol 10: 358-364
- Karita S, Sakka K, Ohmiya K (1997) Cellulosomes, cellulase complexes, of anaerobic microbes: their structure, models and functions. In Rumen Microbes and Digestive Physiology in Ruminants, Onodera R et al. eds., pp. 47-57. Japan Sci. Soc. Press, Tokyo/S. Karger, Basel.
- Schülein M (2000) Protein engineering of cellulases. Biochim Biophys Acta 1543: 239-252
- Sheehan J, Himmel M (1999) Enzymes, energy, and the environment: a strategic perspective on the U.S. department of energy´s research and development activities for bioethanol. Biotechnol Prog 15: 817-827
- Shoham Y, Lamed R, Bayer EA (1999) The cellulosome concept as an efficient microbial strategy for the polysaccharide degradation of insoluble polysaccharides. Trends Microbiol 7: 275-281
- Tomme P, Boraston A, McLean B, Kormos J, Creagh AL, Sturch K, Gilkes NR, Haynes CA, Warren RAJ, Kilburn DG (1998) Characterization and affinity applications of cellulose-binding domains. J Chromatogr B 715: 283-296
- Tomme P, Warren RA, Miller RC Jr, Kilburn DG, Gilkes,N (1995) In: Enzymatic Degradation of Insoluble Polysaccharides (Saddler, J.N. & Penner, M., eds.), Cellulose-binding domains: classification and properties. pp. 142-163, American Chemical Society, Washington
A server containing all known cellulase sequences, grouped in families. It is continuously updated:
- Coutinho, P.M. & Henrissat, B. (1999) Carbohydrate-Active Enzymes server at
URL: http://afmb.cnrs-mrs.fr/~cazy/CAZY/index.html - Henrissat B, Teeri TT, Warren RAJ (1998) A scheme for designating enzymes that hydrolyse the polysaccharides in the cell walls of plants. FEBS Let 425: 352-354
- Henrissat B., Bairoch A. (1996) Updating the sequence-based classification of glycosyl hydrolases. Biochem. J. 316: 695-696.
- Anderson KL, Blair BG (1996) Regulation of the cellulolytic activity of Eubacterium cellulosolvens 5494: a review. SAAS Bull Biochem Biotechnol 9: 57-62
- Aurilia V, Martin JC, McCrae SI, Scot KP, Rincon MT, Flint HJ (2000) Three multidomain esterases from the cellulolytic rumen anaerobe Ruminococcus flavefaciens 17 that carry divergent dockerin sequences. Microbiol 146: 1391-1397
- Avitia CI, Castellanos-Juarez FX, Sanchez E, Tellez-Valencia A, Fajardo-Cavazos P, Nicholson WL, Pedraza-Reyes M (2000) Temporal secretion of a multicellulolytic system in myxobacter sp. AL-1 molecular cloning and heterologous expression of cel9 encoding a modular endocellulase clustered in an operon with cel48, an exocellobiohydrolase gene. Eur J Biochem. 267:7058-64
- Bélaich JP, Tardif C, Bélaich A, Gaudin C (1997) The cellulolytic system of Clostridium cellulolyticum. J Biotechnol 57: 3-14
- Berger E, Jones WA, Jones DT, Woods DR (1990) Sequencing and expression of a cellodextrinase (ced1) gene from Butyrivibrio fibrisolvens H17c cloned in Escherichia coli. Mol Gen Genet 223: 310-318
- Blackall LL, Hayward AC, Sly LI (1985) Cellulolytic and extremophilic Gram-negative bacteria: revival of the genus Cellvibrio. J Appl Bacteriol 59: 81-97
- Bredholt S, Sonne-Hansen J, Nielsen P, Mathrani IM, Ahring BK (1999) Caldicellulosiruptor kristjanssonii sp. nov., a cellulolytic, extremely thermophilic, anaerobic bacterium. Int J Syst Bacteriol 49: 991-996
- Cavedon K, Leschine SB, Canale-Parola E (1990) Cellulase system of a free-living, mesophilic Clostridium (strain C7). J Bacteriol 172: 4222-4230
- Coughlan MP, Mayer F (1992) The cellulose-decomposing bacteria and their enzyme systems. In The Prokaryotes: a handbook on the biology of bacteria. 2ns edn., p. 460-516. Edited by Balows A, Trüper HG, Dworkin M, Harder W, Schleifer KH. Springer-Verlag, New York
- Dees C, Ringelberg D, Scott TC, Phelps TJ (1995) Characterization of the cellulose degrading bacterium NCIMB 10462. Appl Biochem Biotechnol 51: 263-274
- Ding SY, Bayer EA, Steiner D, Shoham Y, Lamed R (1999) A novel cellulosomal scaffoldin from Acetivibrio cellulolyticus that contains a family 9 glycosyl hydrolase. J Bacteriol 181: 6720-6729
- Elberson MA, Malekzadeh F, Yazdi MT, Kameranpour N, Noori-Dloii MR, Matte MH, Shahamat M, Colwell RR, Sowers KR (2000) Cellulomonas persica sp. nov. and Cellulomonas iranensis sp. nov., mesophilic cellulose-degrading bacteria isolated from forest soil. Int J System Evol Microbiol 50: 993-996
- Eppard M, Krumbein WE, Koch C, Rhiel E, Staley JT, Stackebrandt E (1996) Morphological, physiological, and molecular characterization of Actinomycetes isolated from dry soil, rocks, and monument surfaces. Arch Microbiol. 166:12-22
- Fields MW, Mallik S, Russell JB (2000) Fibrobacter succinogenes S85 ferments ball-milled cellulose as fast as cellobiose until cellulose surface area is limiting. Appl Microbiol Biotechnol 54: 570-574
- Garrity GM ed. (2001) Bergey´s manual of systematic bacteriology. 2nd ed.. Springer-Verlag New York
- Hägerdahl B, Harris H, Pye EK (1979) Association of beta-glucosidase with intact cells of Thermoactinomyces.
Biotechnol Bioeng 21: 345-55 - Jin F, Toda K (1989) Purification and characterization of cellulases from Clostridium thermocopriae sp. nov. JT3-3. J Ferment Bioeng 67: 8-13
- Kakiuchi M, Isui A, Suzuki K, Fujino T, Fujino E, Kimura T, Karita S, Sakka K, Ohmiya K (1998) Cloning and DNA sequencing of the genes encoding Clostridium josui scaffolding protein CipA and cellulase CelD and identification of their gene products as major components of the cellulosome. J Bacteriol 180: 4303-4308
- Kelly WJ, Asmundson RV, Hopcroft DH (1987) Isolation and characterization of a strictly anaerobic, cellulolytic spore former: Clostridium chartatabidum sp. nov. Arch Microbiol 147: 169-173
- Khan AW, Meek E, Sowden LC, Colden JR (1984) Emendation of the genus Acetivibrio and description of Acetivibrio cellulosolvens sp. nov., a nonmotile celluloytic mesophile. Int J Syt Bacteriol 34: 419-422
- Kim CH (1995) Characterization and substrate specificity of an endo-ß-1,4-D-glucanase I (Avicelase I) from an extracellular multienzyme complex of Bacillus circulans. Appl Environ Microbiol 61: 959-965
- Lamed R, Naimark J, Morgenstern E, Bayer EA (1987) Specialized surface structure in cellulolytic bacteria. J Bacteriol 169: 3792-3800
- Lamed R, Morag E, Moryosef O, Bayer EA (1991) Cellulosome-like entities in Bacteroides cellulosolvens. Curr Microbiol 22: 27-34
- Lednicka D, Mergaert J, Cnockaert MC, Swings J (2000) Isolation and identification of cellulolytic bacteria involved in the degradation of natural cellulosic fibres. Syst Appl Microbiol. 23:292-299
- Li X, Chen H, Ljungdahl L (1997) Appl Environ Microbiol 63: 4721-4728
- MacKenzie CR, Bilous D, Johnson KG (1984) Purification and characterization of an exoglucanase from Streptomyces flavogriseus. Can J Microbiol 30: 1171-1178
- Méndez BS, Pettinari MJ, Ivanier SE, Ramos CA, Sineriz F (1991) Clostridium thermopapyrolyticum sp. nov., a cellulolytic thermophile. Int J Syst Bacteriol 41: 281-283
- Mladenovska Z, Mathrani IM, Ahring BK (1995) Isolation and characterization of Caldicellulosiruptor lactoaceticus sp. nov., an extremely thermophilic, cellulolytic anaerobic bacterium. Arch Microbiol 163: 223-230
- Mullings R, Parish JH (1984) Mesophilic aerobic Gram negative cellulose degrading bacteria from aquatic habitats and soils. J Appl Bacteriol 57: 455-468
- Ohara H, Karita S, Kimura T, Sakka K, Ohmiya K (2000) Characterization of the cellulolytic complex (cellulosome) from Ruminococcus albus. Biosci Biotechnol Biochem 64: 254-260
- Pagés S, Gal L, Bélaich A, Gaudin C, Tardif C, Bélaich JP (1997) Role of scaffolding protein CipC of Clostridium cellulolyticum in cellulose degradation. J Bacteriol 179: 2810-2816
- Palop ML, Valles S, Pinaga F, Flors A (1989) Isolation and characterization of an anaerobic, cellulolytic bacterium, Clostridium celerescens sp. nov. Int J Syst Bacteriol 39: 68-71
- Perito B, Hanhart E, Irdani T, Iqbal M, McCarthy AJ, Mastromei G (1994) Characterization and sequence analysis of a Streptomyces rochei A2 endoglucanase-encoding gene. Gene. 148:119-24
- Pohlschröder M, Canale-Parola E, Leschine SB (1995) Ultrastructural diversity of the cellulase complexes of Clostridium papyrosolvens C7. J Bacteriol 177: 6625-6629
- Ponpium P, Ratanakhanokchai K, Kyu KL (2000) Isolation and properties of a cellulosome-type multienzyme complex of the thermophilic Bacteroides sp. strain P-1. Enz Microb Technol 26: 459-465
- Rainey FA, Donnison AM, Janssen PH, Saul D, Rodrigo A, Bergquist PL, Daniel RM, Stackebrandt E, Morgan HW (1994) Description of Caldicellulosiruptor saccharolyticus gen. nov., sp. nov.: an obligately anaerobic, extremely thermophilic, cellulolytic bacterium. FEMS Microbiol Let 120: 263-266
- Schellhorn HE, Forsberg CW (1984) Multiplicity of extracellular ß-(1,4)-endoglucanases of Bacteroides succinogenes S85. Can J Microbiol 30: 930-937
- Schrempf H, Walter S (1995) The cellulolytic system of Streptomyces reticuli.
Int J Biol Macromol. 17:353-355 - Schwarz WH, Bronnenmeier K, Landmann B, Wanner G, Staudenbauer WL, Kurose N, Takayama T (1995) Molecular characterization of four strains of the cellulolytic thermophile Clostridium stercorarium. Biosci Biotech Biochem 59: 1661-1665
- Shoseyov O, Doi RH (1990) Essential 170-kDa subunit for degradation of crystalline cellulose by Clostridium cellulovorans cellulase. Proc Natl Acad Sci USA 87: 2192-2195
- Sunna A, Gibbs MD, Chin CW, Nelson PJ, Bergquist PL (2000) A gene encoding a novel multidomain beta-1,4-mannanase from Caldibacillus cellulovorans and action of the recombinant enzyme on kraft pulp. Appl Environ Microbiol. 66:664-70
- Svetlichnyi VA, Svetlichnaya TP, Chernykh NA, Zavarzin GA (1990) Anaerocellum thermophilum gen. nov., sp. nov.: an extremely thermophilic cellulolytic eubacterium isolated from hot springs in the valley of geysers. Microbiol (Rus.) 59: 598-604
- Tamaru Y, Karita S, Ibrahim A, Chan H, Doi RH (2000) A large gene cluster for the Clostridium cellulovorans cellulosome. J Bacteriol 182: 5906-5910
- Thayer DW, Lowther SV, Phillips JG (1984) Cellulolytic activities of the genus Cellulomonas. Int J Syst Bacteriol 34: 432-438
- Varel VH, Yen JT, Kreikemeier KK (1995) Addition of cellulolytic clostridia to the bovine rumen and pig intestinal tract. Appl Environ Microbiol. 61: 1116-1119
- Wilson DB (1992) Biochemistry and genetics of actinomycete cellulases.
Crit Rev Biotechnol. 12:45-63 - Yang JC, Chynoweth DP, Williams DS, Li A (1990) Clostridium aldrichii sp. nov., a cellulolytic mesophile inhabiting a wood-fermenting anaerobic digester. Int J Syst Bacteriol 40: 268-272
- Yanling H, Youfang D, Yanquan L (1991) Two cellulolytic Clostridium species: Clostridium cellulosi sp. nov. and Clostridium cellulofermentans sp. nov. (1991) Int J Syst Bacteriol 41: 306-309
These references cite the paper where the cellulolytic trait was described:
