Rhynchosporium
Encyclopedia
Rhynchosporium is a genus
of fungi that is pathogenic to grass. includes currently four accepted species: R. secalis
from barley
, R. orthosporum from Dactylis glomerata
, R. agropyri from Agropyron
, and R. commune from Hordeum
spp. and Bromus diandrus
. Rhynchosporium secalis is one of the most destructive pathogens of barley worldwide, causing yield decreases of up to 40% and reduced grain quality . It is principally splash dispersed conidia which lead to disease transmission, though other sources (e.g. seed) are known to play a role.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of fungi that is pathogenic to grass. includes currently four accepted species: R. secalis
Rhynchosporium secalis
Rhynchosporium secalis is an ascomycete fungus that is the causal agent of barley and rye scald.-Morphology:No sexual stage is known. The mycelium is hyaline to light gray and develops sparsely as a compact stroma under the cuticle of the host plant. Condia are borne sessilely on cells of the...
from barley
Barley
Barley is a major cereal grain, a member of the grass family. It serves as a major animal fodder, as a base malt for beer and certain distilled beverages, and as a component of various health foods...
, R. orthosporum from Dactylis glomerata
Dactylis glomerata
Dactylis glomerata, Cock's-foot and orchard grass, is a common species of grass in the genus Dactylis, native throughout most of Europe, temperate Asia, and northern Africa.-Distribution:...
, R. agropyri from Agropyron
Agropyron
Agropyron is a genus of grasses , native to Europe and Asia. Species in the genus are commonly referred to as crested-wheat grasses...
, and R. commune from Hordeum
Hordeum
Hordeum is a genus of about 30 species of annual and perennial grasses, native throughout the temperate Northern Hemisphere, temperate South America, and also South Africa....
spp. and Bromus diandrus
Bromus diandrus
Bromus diandrus is a species of grass known by the common names great brome and "ripgut brome".This is a brome grass which is native to the Mediterranean but has been introduced to much of the rest of the world...
. Rhynchosporium secalis is one of the most destructive pathogens of barley worldwide, causing yield decreases of up to 40% and reduced grain quality . It is principally splash dispersed conidia which lead to disease transmission, though other sources (e.g. seed) are known to play a role.