| nivalenol-type populations of fusarium graminearum and f. asiaticum are prevalent on wheat in southern louisiana. | u.s. populations of the fusarium graminearum clade cause head blight on wheat and barley and usually contaminate grain with the trichothecene mycotoxin deoxynivalenol (don). recently, however, individual nivalenol (niv)-type isolates from the united states were described that belonged to either the newly described species f. gerlachii or the genetically distinct gulf coast population of f. graminearum sensu stricto (s.s.). here, we describe the discovery of niv-type f. graminearum s.s. populatio ... | 2011 | 20822434 |