Alternaria porri
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Alternaria porri conidia and conidiophores, scale bars = 10 µm (click on image to enlarge it)
Author(s): J.H.C. Woudenberg, M. Truter, J.Z. Groenewald and P.W. Crous
Source: Studies in Mycology, 2014, 79, p. 37
Author(s): J.H.C. Woudenberg, M. Truter, J.Z. Groenewald and P.W. Crous
Source: Studies in Mycology, 2014, 79, p. 37
Alternaria porri (Ellis) Cif. 1929
The fungus is wide-spread and causes or contributes to purple blotch of onion.
A. porri is the type species of the largest subgroup of the genus Alternaria (section Porri). This section is characterized by the shape (ellipsoid, subcylindrical or obovoid) and formation of their conidia which have long beaks (see Woudenberg et al., 2014).
For details see the respective page in BugwoodWiki.
- Other images of Alternaria porri (IPM Images - click to enlarge)
symptoms on onion
symptoms on onion
infestation in an onion field
conidia
