2.1.1.154	additional information	the enzyme specifically involved in the biosynthesis of an inducer of Rhizobium meliloti nodulation genes	
2.1.1.154	S-adenosyl-L-methionine + isoliquiritigenin	the product of the reaction, 2'-O-methylisoliquiritigenin, is the most potent inducer of nodulation genes of Rhizobium meliloti, the symbiont of Medicago sativa which forms nitrogen-fixing nodules