USDA Rhizobium Germplasm Collection Threatened with Shutdown. Officials of the U.S. Department of Agriculture (USDA) plan to ... stop supporting a Rhizobium germplasm collection that is maintained at the Agricultural Research Service facility in Beltsville ...
Evolution of rhizobia by acquisition of a 500-kb symbiosis island that integrates into a phe-tRNA gene. Proc. Natl. Acad Sci. ...