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Rhynchosporium secalis

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Kingdom
  
Fungi

Order
  
Incertae sedis

Genus
  
Rhynchosporium

Higher classification
  
Rhynchosporium

Phylum
  
Ascomycota

Family
  
Incertae sedis

Scientific name
  
Rhynchosporium secalis

Rank
  
Species

Rhynchosporium secalis IgtRhynchosporium secalisltIgt Oudem J Davis

Similar
  
Rhynchosporium, Pyrenophora teres, Blumeria graminis, Puccinia hordei, Mycosphaerella graminicola

Rhynchosporium secalis is an ascomycete fungus that is the causal agent of barley and rye scald.

Contents

Morphology

Rhynchosporium secalis httpsplantevaernonlinedlbrdkcpGraphicsImag

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.

Host species

Rhynchosporium secalis FileRhynchosporium secalis on ryeJPG Wikimedia Commons

  • 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 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. 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.

    • Rhynchosporium secalis FileRhynchosporium secalis on rye 2JPG Wikimedia Commons

    References

    Rhynchosporium secalis Wikipedia
    (Text) CC BY-SA