Curvularia

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Curvularia
Curvularia geniculata 01.jpg
Curvularia geniculata
Scientific classification
Kingdom: Fungi
Phylum: Ascomycota
Class: Euascomycetes
Order: Pleosporales
Family: Pleosporaceae
Genus: Curvularia
Boedijn, 1933
Type species
Curvularia lunata
(Wakker) Boedijn

Curvularia is a hyphomycete (mold) fungus which is a facultative pathogen of many plant species and of the soil. Most Curvularia are found in tropical regions, though a few are found in temperate zones.

Curvularia defined by the type species C. lunata (Wakker) Boedijn. Curvularia lunata appears as shiny velvety-black, fluffy growth on the colony surface. C. lunata is distinguished by septate, dematiaceous hyphae producing brown, geniculate conidiophores. The poroconidia are curved slightly to distinctly, transversely septate, with an expanded third cell from the pore end of the conidium. Curvularia can be easily distinguished from Bipolaris and Drechslera spp. since the conidia are non-distoseptate, that is, septate from edge to edge of the conidial wall. The teleomorphic state of the type species Curvularia lunata is Cochliobolus lunatus (Fam. Pleosporaceae, Ord. Pleosporales, Cla. Loculoascomycetes, Phy. Ascomycota).

Heat-tolerance symbiote[edit]

Curvularia protuberata is an endosymbiote of panic grass (Dichanthelium lanuginosum) that enables it to thrive near hot springs in soil temperatures of up to 104° F (40° C). The fungus confers this protective effect only when itself infected by the Curvularia thermal tolerance virus (CThTV). Plants unrelated to panic grass also experience this protective effect when inoculated with the virus-infected fungus.[1]

Species[edit]

Grass blight caused by Curvularia geniculata

Primary species of Curvularia commonly found in soils and on plant tissues (including seeds):

References[edit]

External links[edit]