Verticillium (genus - weed pathogens)
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Verticillium (weed pathogens) Nees 1817
This is a small genus of soil-borne, plant pathogenic fungi, causing important wilt diseases in various crops. For crop pathogens see Verticillium (crop pathogens). The strains of several species are being studied as possible biological control agents against weeds. This group is covered here.
Infections start at the roots, the vascular system is attacked and plant death often follows. Verticillium species reproduce only asexually, no sexual state is known. In the past, the genus contained many species with narrow, spore-forming cells arranged in whorls and arising from a main axis. It included also forms other than plant pathogens. The genus is now confined to a group of plant pathogens that are characterized by the DNA structure of its members.
For a taxonomic review see Inderbitzin et al., 2011.
Currently, the following species have been entered into the system: