Table 2.
Potential metabolic functions predicted by FAPROTAX. Only functions with an abundance greater than 0.1% are presented. Main taxa contribution shows the 10 most abundant taxa. OM: organic management, CM: conventional management.
| Metabolic functions rhizosphere | OM | CM | Main taxa contribution |
|---|---|---|---|
| C cycle | |||
| Chemoheterotrophy | 16.28* | 14.50 | Methylocystaceae unclassified, Sphingomonas, Rubrobacter, Blastococcus, Agromyces, Solirubrobacter, Opitutus, Lysobacter, Streptomyces, Nocardioides |
| Aerobic chemoheterotrophy | 14.44 | 13.99 | Erythrobacteraceae unclassified, Sphingomonas, Rubrobacter, Blastococcus, Agromyces, Solirubrobacter, Streptomyces, Nocardioides, Microvirga, Mesorhizobium |
| Fermentation | 1.04* | 0.28 | Opitutus, Cellulosimicrobium, Lautropia, Isptericola, Enterococcus, Kluyvera, Geothrix, Cellulomonas, Olsenella, Streptococcus |
| Aromatic compound degradation | 0.58* | 0.17 | Rhodococcus, Nocardioides |
| Hydrocarbon degradation | 0.15* | 0.01 | Rhodococcus, Methylocystaceae unclassified |
| Phototrophy | 0.20* | 0.15 | Blastochloris, Rhodopseudomonas, Rhodomicrobium, Craurococcus, Ectothiorhodospiraceae unclassified |
| Photoautotrophy | 0.18* | 0.09 | Ectothiorhodospiraceae unclassified |
| Anoxygenic photoautotrophy | 0.18* | 0.09 | Ectothiorhodospiraceae unclassified |
| Aromatic hydrocarbon degradation | 0.11* | 0.00 | Rhodococcus |
| Aliphatic non-methane hydrocarbon degradation | 0.11* | 0.00 | Rhodococcus |
| Methylotrophy | 0.13* | 0.03 | Methanomassiliicoccus, Methylobacterium, Methylocystaceae unclassified, Paracoccus, Methylobacillus, Methylophilus, Methylotenera |
| C and N cycles | |||
| Chitinolysis | 0.60* | 0.19 | Lysobacter |
| Ureolysis | 0.46* | 0.17 | Afipia, Methylobacterium, Mesorhizobium, Roseomonas, Azospirillum, Massilia, Methylophilus |
| N cycle | |||
| Nitrate reduction | 3.45 | 3.17 | Rubrobacter, Nitrobacter, Ensifer, Paracoccus, Craurococcus, Achromobacter, Klebsiella, Stenotrophomonas, Kluyvera, Opitutus |
| Nitrification | 1.02* | 0.28 | Nitrososphaera, Nitrospira, Nitrobacter, Nitrosospira |
| Aerobic nitrite oxidation | 0.74* | 0.18 | Nitrospira, Nitrobacter |
| Aerobic ammonia oxidation | 0.28* | 0.09 | Nitrososphaera, Nitrosospira |
| Nitrogen fixation | 0.22 | 0.30 | Bradyrhizobium, Azospirillum |
| S cycle | |||
| Anoxygenic photoautotrophy S oxidizing | 0.18* | 0.05 | Ectothiorhodospiraceae unclassified |
| Others | |||
| Manganese oxidation | 0.11* | 0.24 | Geodermatophilus |
| Not assigned | 57.93 | 64.24 |