Table 1. Classification and general features of Rhizobium leguminosarum bv. trifolii WSM2012 according to the MIGS recommendations [8].

MIGS ID	Property	Term	Evidence code
	Current classification	Domain Bacteria	TAS [9]
		Phylum Proteobacteria	TAS [10]
		Class Alphaproteobacteria	TAS [11,12]
		Order Rhizobiales	TAS [12,13]
		Family Rhizobiaceae	TAS [14,15]
		Genus Rhizobium	TAS [14,16-19]
		Species Rhizobium leguminosarum bv. trifolii	TAS [14,16,19,20]
	Gram stain	Negative	IDA
	Cell shape	Rod	IDA
	Motility	Motile	IDA
	Sporulation	Non-sporulating	NAS
	Temperature range	Mesophile	NAS
	Optimum temperature	28°C	NAS
	Salinity	Non-halophile	NAS
MIGS-22	Oxygen requirement	Aerobic	NAS
	Carbon source	Varied	IDA
	Energy source	Chemoorganotroph	NAS
MIGS-6	Habitat	Soil, root nodule, on host	IDA
MIGS-15	Biotic relationship	Free living, symbiotic	IDA
MIGS-14	Pathogenicity	Non-pathogenic	NAS
	Biosafety level	1	TAS [21]
	Isolation	Root nodule	IDA
MIGS-4	Geographic location	Ethiopia	IDA
MIGS-5	Nodule collection date	April 1963	IDA
MIGS-4.1 MIGS-4.2	Longitude     Latitude	40.209961     9.215982	IDA
MIGS-4.3	Depth	Not recorded
MIGS-4.4	Altitude	Not recorded

Evidence codes – IDA: Inferred from Direct Assay; 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 [22].