Title : Genome analysis suggests that the soil oligotrophic bacterium Agromonas oligotrophica (Bradyrhizobium oligotrophicum) is a nitrogen-fixing symbiont of Aeschynomene indica - Okubo_2013_Appl.Environ.Microbiol_79_2542
Title : Complete genome sequence of Bradyrhizobium sp. S23321: insights into symbiosis evolution in soil oligotrophs - Okubo_2012_Microbes.Environ_27_306