Nature Communications

Table 3 Nutritional composition of the rhizosphere and bulk soil.

From: Metabolic modelling reveals the specialization of secondary replicons for niche adaptation in Sinorhizobium meliloti

Compound	Rhizosphere^*	Bulk soil^*
Total sugars	0.615	1.753
Arabinose	0.201	0.273
Fucose^†	0.030	0.064
Galactose	0.136	0.239
Galacturonic acid^‡	0.053	—
Glucose	0.030	0.586
Glucuronic acid^‡	0.023	—
Mannose	0.040	0.240
Rhamnose	0.022	0.132
Xylose	0.034	0.201
Ribose	—	0.018
Sucrose	0.015	0.000
Raffinose	0.008	0.000
Stachyose	0.023	0.000
Total organic acids	1.231	0.072
Succinate	0.091	0.005
Malate	0.591	0.035
Citrate^‡	0.549	0.032
Total amino acids	0.154	0.175
Aspartic acid	0.024	0.000
Threonine	0.007	0.006
Serine	0.007	0.000
Homoserine^‡	0.046	—
Glutamic acid	0.021	0.000
Proline	0.000	0.010
Glycine	0.005	0.006
Alanine	0.006	0.026
Valine	0.003	0.028
Cysteine	0.000	0.006
Isoleucine	0.001	0.019
Leucine	0.002	0.034
Tyrosine	0.002	0.006
Phenylalanine^‡	0.002	0.006
GABA	0.000	—
Ornithine	0.006	0.006
Lysine^†	0.004	0.006
Histidine	0.004	0.006
Arginine	0.007	0.006
Asparagine	—	0.000
Glutamine	—	0.000
Hydroxyproline	0.006	—
Ammonium	Excess	Excess
Nitrate	Excess	Excess
Sulfate	Excess	Excess
Phosphate	Excess	Excess

GABA, gamma-aminobutyric acid.
^*Values represent the molar ratio of the compounds, with the sum of all compounds in each environment equalling 2. —, no information.
^†Excluded from the in silico representation as the model fails to grow on these compounds.
^‡Excluded from the in silico representation as S. meliloti does not grow with these compounds.

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