- Fusarium culmorum
Taxobox
name = "Fusarium culmorum"
regnum =Fungi
phylum =Ascomycota
classis =Sordariomycetes
ordo =Hypocreales
familia =Nectriaceae
genus = "Fusarium "
species = "F. culmorum"
binomial = " Fusarium culmorum"
binomial_authority = (Wm.G. Sm.) Sacc. 1895Fusarium culmorum is a
plant pathogen and the causal agent of seedling blight, foot rot, ear blight, stalk rot, common root rot and other diseases ofcereals , grasses, and a wide variety of monocots and dicots.Identification
Growth on PDA
Colonies grow rapidly. Aerial mycelium is whitish to yellow, tan or pale orange, but become brown to dark brown to red-brown with age. Under alternating conditions of light and temperature, rings of spore masses may be formed by some isolates.cite book
last = Wiese
first = M.V.
title = Compendium of wheat diseases
publisher = American Phytopathological Society
date = 1987
pages = 124 pp ] cite book
last = Leslie
first = J.F.
coauthors = B.A. Summerell
title = The Fusarium Laboratory Manual
publisher = Blackwell Publishing
date = 2006
pages = 400 pp ]Microconidia
*AbsentMacroconidia
*Abundance: Usually abundant.
*Sporodochia: Orange to bronw color and relatively common
*Morphology: Thick and bluntly pointed at their apex. Conspicuously wider above the center of the spore. The dorsal side is somewhat curved, but the ventral side is almost straight. Distinguishing character from "F. sambucinum" is the broader macroconidia.
*Size: Range from 4 to 7 μm wide and from 25 to 50 μm long. Number of septa: Usually 3- or 5-septate
*Development: Develop singly from phialides (5 x 15-20 μm). They are loose at first and are later aligned in sporodochia. Chlamydospores
*Abundance/Speed of formation: Usually abundant and form relatively quickly, requiring 3-5 weeks on CLA.
*Location: In hyphae and macroconidia. Those found in the macroconidia persist longer than those found in the hyphae under field conditions.
*Morphology: Thick-walled, globose.
*Appearance: Found singly, in clumps or chains.
*Size: 9-14 μ m in diameter.External links
[http://www.speciesfungorum.org/Names/Names.asp Index Fungorum]
[http://nt.ars-grin.gov/fungaldatabases USDA ARS Fungal Database]
[http://www.ctu.edu.vn/colleges/agri/gtrinh/fuskey.pdf FusKey - Fusarium Interative Key]References
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