Table 1. Classification and general features of R. leguminosarum bv trifolii WSM2304 in accordance with the MIGS recommendations [8].

MIGS ID	Property	Term	Evidence code
	Classification	Domain Bacteria	TAS [5-7,9]
		Phylum Proteobacteria	TAS [5-7,10]
		Class Alphaproteobacteria	TAS [5-7,11,12]
		Order Rhizobiales	TAS [5-7,11,13]
		Family Rhizobiaceae	TAS [5-7,14]
		Genus Rhizobium	TAS [5-7,14-18]
		Species Rhizobium leguminosarum bv trifolii	TAS [5-7,14,16,18,19]
		Strain WSM2304
	Gram stain	negative	TAS [20]
	Cell shape	rod	TAS [20]
	Motility	motile	TAS [20]
	Sporulation	non-sporulating	TAS [20]
	Temperature range	mesophile	TAS [20]
	Optimum temperature	28°C	TAS [20]
	Salinity	unknown	TAS [20]
MIGS-22	Oxygen requirement	aerobic	TAS [20]
	Carbon source	glucose, mannitol	TAS [5-7]
	Energy source	chemoheterotroph	TAS [20]
MIGS-6	Habitat	Soil, root nodule, host	TAS [5-7]
MIGS-15	Biotic relationship	Free living, Symbiotic	TAS [5-7]
MIGS-14	Pathogenicity	none	TAS [20]
	Biosafety level	1	TAS [21]
	Isolation	Trifolium polymorphum root nodule	TAS [22]
MIGS-4	Geographic location	Glencoe Research Station, INIA, Uruguay	TAS [22]
MIGS-5	Sample collection time	December 1st, 1998	TAS [22]
MIGS-4.1 MIGS-4.2	Latitude – Longitude	-56 -31.41	TAS [22]
MIGS-4.3	Depth	5cm soil depth	NAS [2]
MIGS-4.4	Altitude	130m	TAS [22]

Evidence codes - IDA: Inferred from Direct Assay (first time in publication); TAS: Traceable Author Statement (i.e., a direct report exists in the literature); NAS: Non-traceable Author Statement (i.e., not directly observed for the living, isolated sample, but based on a generally accepted property for the species, or anecdotal evidence). These evidence codes are from the Gene Ontology project [23]. If the evidence code is IDA, then the property was directly observed for a living isolate by one of the authors or an expert mentioned in the acknowledgements