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GrainGenes Pathology Report: Cephalosporium stripe

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Pathology
Cephalosporium stripe
Type
Fungus
Host Species
Triticum aestivum
Hordeum vulgare
Secale cereale
Avena sativa
X Triticosecale
Causal Organism
Cephalosporium gramineum
Symptoms
Soilborne spores from infested residues infect roots through wounds caused by heaving, frost, chemical and/or mechanical injury. Infected seedlings can exhibit mosaic-like yellowing, but foliar symptoms are most conspicuous after jointing. Long, chlorotic stripes form on either or both sides of the leaf mid-rib and often run the entire length of the leaf. Extension of the stripes down the leaf sheath to the stem node is diagnostic. Cutting the node length-wise will reveal a dark discoloration. Stripes eventually become necrotic. Severely infected plants appear stunted, ripen prematurely and often produce white heads bearing little or no kernels. Favored by wet soils, acidic soil pH, fluctuating winter temperatures and rotation of wheat with susceptible cereals and grasses. Winter cereals and many grasses (Bromus species, Dactylis species, Poa species) are alternate hosts.
Image
Sporodochia of Cephalosporium gramineum.
Leaf-striping symptoms of cephalosporium stripe...
Sporodochia of C. gramineum...
Conidia of C. gramineum (10x40).
Cephalosporium stripe on wheat.
Reference
ReferenceKephart KD (1993) Winter wheat disease management Insect and plant disease management handbook.
Reference(1987) Compendium of wheat diseases.