Rhizobium dioscoreae Ouyabe et al. 2020 Ouyabe M. Tanaka N. Shiwa Y. Fujita N. Kikuno H. Babil P. Shiwachi H. Rhizobium dioscoreae sp. nov., a plant growth-promoting bacterium isolated from yam (Dioscorea species). 2020 70 9 5054 5062 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004381 32804605