Curvularia trifolii

Curvularia trifolii
Scientific classification
Kingdom:
Fungi
Phylum:
Ascomycota
Class:
Dothideomycetes
Subclass:
Pleosporomycetidae
Order:
Pleosporales
Family:
Pleosporaceae
Genus:
Curvularia
Species:
C. trifolii
Binomial name
Curvularia trifolii
(Kauffman) Boedijn, (1933)
Synonyms

Brachysporium trifolii Kauffman, (1920)

Curvularia trifolii is a plant pathogen.

Host and Symptoms

Curvularia trifolii is a fungal pathogen which causes leaf blight in clover. When the host plant is infected, lesions on the leaf start to appear as yellow discolored patches. These patches will eventually turn brown and form characteristic V-shaped lesions in between the leaf veins. When the petiole is infected, the leaf withers and dies. Damage is more common in younger leaves of the clover plant.[1] C. trifolii occurs severely when the temperature increases considerably after the rainy season.[2]

Environment

Curvularia trifolii is commonly found in tropical regions around the world.  Depending on the host plant, the pathogen can survive at temperatures of 40 degree celsius with the optimal temperature range being from 25 - 30 degrees celsius. [2] This pathogen can be easily cultured in potato dextrose agar at room temperature (20 -25 degree celsius). The color of the colony is white to pinkish-gray initially and turns to olive brown or black as the colony matures.[3]

Management

Severe attack by Curvularia trifolii greatly reduces winter-spring pasture production of foragable clover and frequently coincides with feed shortage by late fall, leading to significant decreases in biomass production for overwintering clover species. Approaches to disease control include a range of management strategies. Utilization of fungicides is the most common for control of the disease. Resistances in clover has been found and gives the best long term control of the pathogen. However, some growers choose to use fungicides instead of resistant hosts because it prevents other fungal diseases from growing.[1]

gollark: Ah yes, burning things which are DEFINITELY NOT apiopyroforms is safe.
gollark: Technically, it belongs to the Queen.
gollark: I'm going to mail LyricLy this.
gollark: ++remind 1y lyricly macrÖn?
gollark: Bold of you to assume Macron will occur.

References
  1. Barbetti, M. J.; You, M. P. (2014). "Opportunities and challenges for improved management of foliar pathogens in annual clover pastures across southern Australia". Crop and Pasture Science. 65 (12): 1249. doi:10.1071/cp14117. ISSN 1836-0947.
  2. Falloon, R. E. (1976). "Curvularia trifolii as a high-temperature turfgrass pathogen". New Zealand Journal of Agricultural Research. 19 (2): 243–248. doi:10.1080/00288233.1976.10426773. ISSN 0028-8233.
  3. Messerschmidt, A.; Wever, R. (1996-11-08). "Chloroperoxidase from the Fungus Curvularia Inaequalis". doi:10.2210/pdb1vnc/pdb. Cite journal requires |journal= (help)


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