Online-only Table 2 Summary of microbe traits including information about measurements and statistics about taxon coverage in the accompanying data records.

From: A synthesis of bacterial and archaeal phenotypic trait data

  Trait name Description Measurement type Units or categoric al terms Trait category Number of observations (of possible 169743) Number of NCBI species (of possible 14884) Percent of NCBI species (%)
1 Isolation source Where the microbe was sourced from Textual description (Multiple, hierarchical) Habitat 51977 9776 65.7
2 Gram stain Gram positive or negative Binary +, − Physiological 44196 10141 68.1
3 Metabolism Oxygen usage Categorical Obligate aerobic, Aerobic, Facultative, Microaerophilic, Anaerobic, Obligate anaerobic Physiological 34585 9869 66.3
4 Pathways List of metabolic pathways undertaken Categorical (Multiple, hierarchical) Physiological 12076 3822 25.7
5 Carbon substrate List of carbon substrates that can be utilised Categorical (Multiple, hierarchical) Physiological 4684 4151 27.9
6 Sporulation Can produce spores Binary Yes, No Physiological 19080 5916 39.7
7 Motility Capacity to move Categorical Yes, No, Flagella, Gliding, Axial filament Physiological 22763 6596 44.3
8 Salinity range Coarse environmental preference Categorical Low, Moderate, High, Extreme Environmental 922 536 3.6
9 Temperature range Coarse environmental preference Categorical Low, Medium, High, Extreme Environmental 8799 2753 18.5
10 Cell shape The typical shape of cells Categorical (Multiple) Morphological 28326 6891 46.3
11 Cell diameter (lower) The lower range of cell diameters Length µm Morphological 4980 5726 38.5
12 Cell diameter (upper) The upper range of cell diameters Length µm Morphological 1799 3102 20.8
13 Cell length (lower) The lower range of cell length, where applicable based on shape Length µm Morphological 5000 5294 35.6
14 Cell length (upper) The upper range of cell length, where applicable based on shape Length µm Morphological 2062 3146 21.1
15 Doubling time Growth rate estimate based on doubling number of cells Time Hours Physiological 1134 917 6.2
16 Genome size Number of base pairs making up the genome Count Base pairs Genomic 108558 9115 61.2
17 GC content Percentage of base pairs that are guanine or cytosine Ratio Percentage Genomic 29382 4832 32.5
18 Coding genes The number of coding genes Count Base pairs Genomic 17531 2791 18.8
19 Optimum pH The preferred pH in which to live pH pH Physiological 4604 3927 26.4
20 Optimum temperature The preferred temperature in which to live Temperature Degrees C Physiological 15193 6517 43.8
21 16S rRNA genes The number of 16s rRNAgenes Count Base pairs Genomic 7246 2430 16.3
22 tRNA genes The number of tRNA genes Count Base pairs Genomic 12865 2742 18.4
23 Growth temperature Temperature for specific growth measurements Temperature Degrees C Contextual (for doubling time) 13665 11265 75.7