Invasive weeds, including Elytrigua repens (quack grass), a perennial noxious weed widespread through cold temperate regions of Nothern and Southern hemisphere, saffron thistle (Carthamus lanatus L. ssp. lanatus), a widespread winter-growing annual weed of both pastures and crops throughout Australia, Chenopodium album L. (lambsquarters or fat hen) a world-wide weed of arable crops such as sugar beet and maize and cheatgrass (Bromus tectorum), an exotic winter annual grass weed that has invaded millions of hectares of rangeland in western North America,cause immense economic and environmental costs. Poor results through mechanical and chemical control have made these weeds suitable targets for biological control. In an effort to develop mycoherbicides against these weeds a number of pathogens have been investigated as potential biocontrol agents. Therefore, appropriate pathogens can be a source of natural potential herbicides for the control of target weeds. This communication will illustrate the isolation, chemical and biological characterization and structure-activity relationships studies carried out on the phytotoxins with potential herbicidal activity against the invasive weeds above cited.

Fungal phytotoxins as potential natural herbicides against invasive weeds

248th National Meeting (2014)

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