Rhynchosporium secalis

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Rhynchosporium secalis
Scientific classification
Kingdom: Fungi Phylum: Ascomycota Class: Ascomycetes Order: Incertae sedis Family: Incertae sedis Genus: Rhynchosporium Species: R. secalis
Binomial name
Rhynchosporium secalis (Oudem.) Davis
Synonyms
Marssonia secalis Oudem. (1897) Marssonina secalis (Oudem.) Magnus (1906) Rhynchosporium graminicola Heinsen (1897) Septocylindrium secalis Oudem.

Rhynchosporium secalis is the causal agent of barley scald.

Contents 1 Morphology 2 Host species 3 Sources 4 References

[edit] 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 strom. 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.^[1]

[edit] Host species

Agropyron dasystachyum, A. desertorum, A. elmeri, A. intermedium, A. repens, A. riparium, A. scabriglume, A. semicostatum, A. subsecundum, A. trachycaulum, A. trachycaulum var. trachycaulum, A. trachycaulum var. unilaterale

Agrostis alba, 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. epigeios

Chrysopogon gryllus

Critesion murinum

Cynodon dactylon

Dactylis glomerata

Danthonia sp.

Deschampsia caespitosa

Elymus angustus, E. canadensis, E. chinensis, E. condensatus, E. glaucus, E. innovatus, E. junceus, E. triticoides, E. virginicus

Elytrigia repens

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

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.

[edit] Sources

Index Fungorum
USDA ARS Fungal Database

[edit] References

1. ^ Mathre, D.E. (1997). Compendium of barley diseases. American Phytopathological Society, 120.