• Source: 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 (2-4 x 12-20 μm) are borne sessilely on cells of the fertile stroma. They are hyaline, 1-septate, and cylindric to ovate, mostly with a short apical beak. Microconida have been reported, but their function is unknown. They are exuded from flasklike mycelial branches.




Host species


Agropyron dasystachyum, A. desertorum, A. elmeri, A. intermedium, A. riparium, A. scabriglume, A. semicostatum, A. subsecundum, A. trachycaulum, A. trachycaulum var. trachycaulum, A. trachycaulum var. unilaterale
Agrostis gigantea, A. stolonifera, A. tenuis
Alopecurus geniculatus, A. pratensis
Bouteloua gracilis, B. hirsuta
Bromus aleutensis, B. carinatus, B. ciliatus, B. frondosus, B. inermis, B. pumpellianus, B. secalinus, B. vulgaris
Calamagrostis arundinacea, C. epigejos
Chrysopogon gryllus
Critesion murinum
Cynodon dactylon
Dactylis glomerata
Danthonia sp.
Deschampsia cespitosa
Elymus angustus, E. canadensis, E. chinensis, E. glaucus, E. junceus, E. repens, E. virginicus
Festuca pratensis, F. rubra
Hordeum aegiceras, H. brachyantherum, H. distichon, H. hexastichon, H. jubatum, H. leporinum, H. murinum, H. vulgare, H. vulgare var. nudum, H. vulgare var. trifurcatum
Leymus condensatus, L. innovatus, L. triticoides
Lolium multiflorum, L. perenne, L. rigidum
Microlaena stipoides
Panicum sp.
Phalaris arundinacea
Phleum pratense
Poa annua, P. eminens, P. pratensis
Quercus chrysolepis
Roegneria sp.
Secale cereale, S. montanum
× Triticosecale sp.




Sources


Index Fungorum
USDA ARS Fungal Database




References

Kata Kunci Pencarian:

• Rhynchosporium secalis
• Rhynchosporium
• Barley
• List of barley diseases
• Agriculture in Finland
• List of fungi of South Africa – R