Table 1.

Soybean genes controlling nodule formation

Genotype and nodulation phenotype	Restricted strain	Origin	Linkage group	Gene	Gene product	Possible function	Legume ortholog	Regulatory organ	References
Recessive gene and non-nodulation phenotype
rj1	all	rj1, nod49, T201, A62-2, To-1-0	2 (D1b)	GmNFR1α	LysM-Ser/ Thr-RLK	NF receptor	LjNFR1, MtLYK3, PsSYM37	root	1, 2, 3
rj5, rj6	all	nn5, nod139	11 (B1), 1 (D1a)	GmNFR5α, GmNFR5β	LysM-Ser/ Thr-RLK	NF receptor	LjNFR5, MtNFP, PsSYM10	root	4, 5, 6
Recessive gene and hypernodulation phenotype
rj7	all	nts1, nod1-3, nod3-7, en6500	12 (H)	NTS1/ GmNARK	LRR-Ser/ Thr-RLK	AON	LjHAR1, MtSUNN, PsSYM29	shoot	7, 8, 9, 10
Dominant gene and restriction nodulation phenotype
Rfg1	E. fredii/S. fredii USDA257	McCall, Williams 82, Hill, Jack	16 (J)	Rfg1	TIR-NBS- LRR	R protein	unknown	root	11
Rj2	B. japonicum USDA122, Is-1	Hardee, CNS, IAC-2, Bonminori	16 (J)	Rj2	TIR-NBS- LRR	R protein	unknown	root	11
Rj3	B. elkanii USDA33	D-51, Hardee, CNS, IAC-2, Bonminori	unknown	unknown	unknown	unknown	unknown	root
Rj4	B. japonicum Is-34, B. elkanii USDA61	Hill, Amsoy 71, Dunfield, Akisengoku, Fukuyutaka	unknown	unknown	unknown	unknown	unknown	root

¹, Radutoiu et al. (2003);

², Limpens et al. (2003);

³, Indrasumunar et al. (2011);

⁴, Madsen et al. (2003);

⁵, Arrighi et al. (2006);

⁶, Indrasumunar et al. (2010);

⁷, Nishimura et al. (2002a);

⁸, Krusell et al. (2002);

⁹, Searle et al. (2003);

¹⁰, Schnabel et al. (2005);

¹¹, Yang et al. (2010)