Puccinia striiformis var. striiformis

Puccinia striiformis var. striiformis is a plant pathogen. It causes stripe rust on wheat, but has other hosts as well. The species is common in Europe and in more recent years has become a problem in Australia. Infection can causes losses of up to 40%, and the fungus will infect both winter wheat and spring wheat. The taxonomy of Puccinia striiformis was revised in 2010. The commonly called stripe rusts on wheat and grasses were separated into four species based on molecular and morphological studies: Puccinia striiformis sensu stricto (on Aegilops, Elymus, Hordeum and Triticum), Puccinia pseudostriiformis (on Poa), Puccinia striiformoides (on Dactylis) and Puccinia gansensis (on Achnatherum)