''Rhynchosporium'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...
that causes leaf scald disease on several
graminaceous hosts. It includes five currently accepted species: ''
R. secalis'' from
rye
Rye (''Secale cereale'') is a grass grown extensively as a grain, a cover crop and a forage crop. It is a member of the wheat tribe (Triticeae) and is closely related to both wheat (''Triticum'') and barley (genus ''Hordeum''). Rye grain is u ...
and
triticale, ''
R. orthosporum'' from ''
Dactylis glomerata'', ''
R. lolii'' from ''
Lolium multiflorum'' and ''
L. perenne'', ''
R. agropyri'' from ''
Agropyron
''Agropyron'' is a genus of Eurasian plants in the grass family), native to Europe and Asia but widely naturalized in North America.
Species in the genus are commonly referred to as wheatgrass.
; Species
* ''Agropyron badamense'' - Tajikistan, ...
'', and ''
R. commune'' from ''
Hordeum
''Hordeum'' is a genus of annual and perennial plants in the grass family. They are native throughout the temperate regions of Africa, Eurasia, and the Americas.
One species, ''Hordeum vulgare'' (barley), has become of major commercial importan ...
'' spp., ''
Lolium multiflorum'' and ''
Bromus diandrus''.
[ ''R. commune'' is one of the most destructive pathogens of barley worldwide, causing yield decreases of up to 40% and reduced grain quality.]
Plant Pathology
References
Fungal plant pathogens and diseases
Ascomycota enigmatic taxa
{{fungus-plant-disease-stub