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. 2018 Jan 9;8:2642. doi: 10.3389/fmicb.2017.02642

Table 1.

PLS results identifying the most important microbial genera affecting methane emissions.

Phylum Microbial Genus VIP Coef. Mean Low CH4 Mean High CH4 L/H CH4 ratio Function
REDUCING EFFECTS ON METHANE EMISSIONS
Chloroflexi Dehalococcoides 1.42 −0.039 0.044 0.020 2.15 H2 ox.
Bacteroidetes Odoribacter 1.39 −0.040 0.058 0.028 2.09 Commensal
Firmicutes Megasphaera 1.35 −0.037 0.218 0.047 4.68 Lactate
Firmicutes Acidaminococcus 1.34 −0.035 1.143 0.099 11.57 AA
Firmicutes Jeotgalicoccus 1.23 −0.035 0.003 0.002 1.17 Halotolerant
Firmicutes Allisonella 1.16 −0.026 0.057 0.005 11.17 AA
Firmicutes Salinicoccus 1.11 −0.028 0.004 0.003 1.57 Halotolerant
Thermotogae Kosmotoga 1.09 −0.028 0.003 0.002 1.31 Thermophile
Bacteroidetes Mitsuokella 1.08 −0.022 0.533 0.070 7.59 Phytate
Actinobacteria Olsenella 1.07 −0.029 2.151 0.983 2.19 Lactate
Bacteroidetes Bacteroides 1.02 −0.027 1.697 1.102 1.54 VFA
Firmicutes Dorea 0.98 −0.024 0.106 0.062 1.70 Acetogen
Proteobacteria Wenzhouxiangella 0.98 −0.001 0.016 0.005 3.28 Halotolerant
Firmicutes Roseburia 0.96 −0.022 0.172 0.079 2.18 Butyrate
Proteobacteria Edwardsiella 0.96 −0.003 0.032 0.019 1.71 N.I.
Firmicutes Aneurinibacillus 0.96 −0.026 0.005 0.003 1.66 Lignin degrader
Firmicutes Pelosinus 0.96 −0.023 0.017 0.011 1.48 Degrader
Proteobacteria Methylomonas 0.95 −0.002 0.018 0.011 1.73 Methanotrophy
Firmicutes Veillonella 0.94 −0.019 0.008 0.003 2.57 Lactate
Proteobacteria Halotalea 0.94 −0.003 0.009 0.005 1.83 Halotolerant
Proteobacteria Alkalilimnicola 0.92 −0.001 0.010 0.007 1.41 Halotolerant
Proteobacteria Sulfurovum 0.92 −0.017 0.007 0.004 1.46 H2 ox.
Proteobacteria Colwellia 0.92 −0.016 0.007 0.003 2.25 Alkane degrader
Proteobacteria Marinomonas 0.91 −0.016 0.004 0.003 1.39 Halotolerant
Proteobacteria Nitrobacter 0.90 0.000 0.009 0.006 1.42 NOB
Proteobacteria Thalassospira 0.90 −0.023 0.003 0.003 1.16 Halotolerant
Firmicutes Faecalitalea 0.87 −0.024 0.020 0.010 2.02 AA
Euryarchaeota Methanohalophilus 0.85 −0.022 0.002 0.001 1.50 Methanogen (M)
Firmicutes Lactobacillus 0.83 −0.019 0.338 0.199 1.70 Lactate
Bacteroidetes Zobellia 0.83 −0.021 0.003 0.002 1.27 Mesophile
Proteobacteria Nitrosococcus 0.83 −0.022 0.003 0.002 1.26 AOB
LOW EFFECT ON METHANE EMISSIONS
Actinobacteria Sanguibacter 1.11 0.012 0.011 0.006 1.72 In blood
Proteobacteria Aromatoleum 1.06 0.016 0.008 0.007 1.26 Degrader
Proteobacteria Thiocystis 1.04 0.009 0.014 0.010 1.46 Sulfur
Proteobacteria Microbulbifer 1.02 0.005 0.022 0.010 2.17 Halotolerant
Euryarchaeota Halosimplex 1.02 0.010 0.004 0.002 1.81 Halotolerant
Proteobacteria Cronobacter 1.00 0.002 0.042 0.020 2.08 Pathogen
Actinobacteria Modestobacter 0.99 0.004 0.010 0.005 2.19 Halotolerant
Proteobacteria Neorickettsia 0.99 0.011 0.002 0.001 1.35 Pathogen
Proteobacteria Halorhodospira 0.98 0.004 0.014 0.008 1.77 Halotolerant
Proteobacteria Serratia 0.98 0.008 0.061 0.048 1.27 N.I.
Spirochaete Salinispira 0.98 0.010 0.008 0.005 1.39 Halotolerant
Proteobacteria Asticcacaulis 0.98 0.007 0.008 0.005 1.59 N.I.
Proteobacteria Sideroxydans 0.98 0.003 0.012 0.005 2.29 Iron ox.
Proteobacteria Pantoea 0.97 0.001 0.043 0.023 1.83 N.I.
Proteobacteria Agrobacterium 0.97 0.007 0.041 0.032 1.29 N.I.
Proteobacteria Raoultella 0.97 0.009 0.012 0.009 1.40 Pathogen
Proteobacteria Halomonas 0.96 0.002 0.043 0.027 1.59 Halotolerant
Armatimonadetes Chthonomonas 0.96 0.002 0.004 0.002 1.82 N.I.
Proteobacteria Ferrimonas 0.96 0.005 0.010 0.006 1.59 Iron
Proteobacteria Acidihalobacter 0.96 0.011 0.017 0.013 1.26 Halotolerant
Actinobacteria Dermabacter 0.95 0.003 0.007 0.004 1.95 N.I.
Proteobacteria Dokdonella 0.95 0.001 0.011 0.007 1.64 N.I.
Proteobacteria Enterobacter 0.95 0.004 0.061 0.046 1.32 Degrader
Actinobacteria Tsukamurella 0.95 0.002 0.007 0.004 1.90 Degrader
Proteobacteria Immundisolibacter 0.95 0.001 0.016 0.009 1.89 Degrader
Proteobacteria Mesorhizobium 0.95 0.007 0.055 0.042 1.31 Degrader
Proteobacteria Lacimicrobium 0.94 0.005 0.004 0.003 1.51 halotolerant
Proteobacteria Castellaniella 0.94 0.008 0.014 0.010 1.33 N.I.
Proteobacteria Pseudomonas 0.94 0.001 0.482 0.342 1.41 Degrader
Proteobacteria Defluviimonas 0.94 0.003 0.008 0.005 1.49 Halotolerant
Dienococcus-Thermus Truepera 0.93 0.007 0.009 0.007 1.28 Degrader
Proteobacteria Methyloceanibacter 0.93 0.003 0.008 0.006 1.40 Methylotrophy
Proteobacteria Thioflavicoccus 0.93 0.004 0.015 0.011 1.40 Sulfur
Firmicutes Syntrophobotulus 0.92 0.003 0.008 0.005 1.49 Syntrophy
Proteobacteria Dyella 0.91 0.004 0.028 0.021 1.33 Degrader
Chlorobi Chlorobium 0.90 0.002 0.021 0.016 1.32 Sulfur
Cyanobacteria Microcoleus 0.90 0.004 0.002 0.002 1.33 Sulfur
Proteobacteria Chelativorans 0.89 0.006 0.010 0.007 1.29 Degrader
Proteobacteria Halioglobus 0.89 0.002 0.005 0.004 1.36 Halotolerant
Proteobacteria Pluralibacter 0.88 0.003 0.014 0.010 1.33 Pathogen
INCREASING EFFECTS ON METHANE EMISSIONS
Proteobacteria Sedimenticola 1.36 0.038 0.008 0.005 1.40 SOB
Firmicutes Sarcina 1.33 0.038 1.142 3.246 0.35 CO2 prod.
Firmicutes Butyrivibrio 1.31 0.037 2.107 3.017 0.70 Butyrate
Euryarchaeota Methanotorris 1.30 0.036 0.002 0.003 0.58 Methanogen (H)
Euryarchaeota Methanobrevibacter 1.23 0.034 4.166 7.146 0.58 Methanogen (H)
Planctomycetes Isosphaera 1.15 0.032 0.003 0.005 0.63 Degrader
Firmicutes Pseudobutyrivibrio 1.13 0.032 0.434 0.617 0.70 Butyrate
Euryarchaeota Methanobacterium 1.11 0.032 0.040 0.053 0.76 Methanogen (H)
Planctomycetes Singulisphaera 1.09 0.030 0.005 0.007 0.61 Degrader
Bacteroidetes Emticicia 1.06 0.029 0.003 0.005 0.69 Fucosidase
Verrucomicrobia Opitutus 1.06 0.029 0.012 0.019 0.66 H2 producer
Planctomycetes Rubinisphaera 0.99 0.027 0.004 0.006 0.74 CO2 prod.
Elusimicrobia Endomicrobium 0.91 0.024 0.005 0.008 0.63 VFA
Euryarchaeota Methanocaldococcus 0.90 0.023 0.004 0.006 0.67 Methanogen (H)
Euryarchaeota Methanococcus 0.86 0.023 0.011 0.015 0.74 Methanogen (H)
Euryarchaeota Methanosphaera 0.86 0.023 0.032 0.041 0.77 Methanogen (H)

VIP, Variable importance for projection; Coef, Coefficient; AA, Amino acids metabolim; AOB, Ammonia-oxidizing bacteria; NOB, Nitrite-oxidizing bacteria; SOB, Sulfur-oxidizing bacteria; ox, Oxidizer; Methanogen (H), Hydrogenotrophic pathway; Methanogen (M), Methylotrophic methanogenic pathway; VFA, Volatile Fatty Acids; N.I., No information.