Pleosporales (weed pathogens)

Ascomycota (weed path.) • fungi/oomycetes • weed diseases • beneficials

Calophoma clematidina (= Phoma clematidina) conidia (click on image to enlarge it)
Author(s): Bruce Watt, University of Maine
Source: IPM Images

Pleosporales (weed pathogens)

This order contains more than 150 genera and includes serious plant pathogens. However, several species are being investigated or used as biological control agents of weeds. This page deals with the latter group. The fruiting bodies (ascomata) are usually spherical with a perithecia-like opening. The asci are bitunicate and the ascospores mostly septate.

Note:
Please note that this page only deals with weed pathogens, for other groups of Pleosporales see:

• Pleosporales (as crop pathogens)
• Pleosporales (antagonistic to plant diseases)
• Pleosporales (entomopathogens)

The following genera are currently entered as weed bioagents under this order:

• Alternaria (anamorphic genus - weed pathogens)
• Ascochyta (anamorphic genus - weed pathogens)
• Bipolaris (genus - weed pathogens)
• Calophoma (weed pathogens)

• Curvularia (weed pathogens)
• Exserohilum (anamorphic genus - weed pathogens)
• Phoma (anamorphic genus - weed pathogens)
• Stagonospora (anamorphic genus - weed pathogens)