Rust fungi germinated spore

Spore germination and appressoria formation during the pathogenesis of rust fungi is affected to a very low extent. The interference with haustorial formation is the most important effect. Colonized cells undergo a hypersensitivity reaction finally they become necrotic. Further development of the obligate parasite is therefore stopped. 

Mildew, scab, rust mites, pear pox mites Preventive against fungi, kills the germinating spores... 

Methyl Z-ferulate is a powerful inhibitor of uredospore germination in a range of rust fungi (Friend, 1979). This and related compounds occur in the fungi themselves. They are gradually leached from the spores on the host surface. This process must take place before germination of the spores occurs. 

The most thorough studies of promotion of fungal development by volatiles was done by French and co-workers (4-6) who showed that volatile compounds in solution or their vapors were effective promotors of rust spore germination. Rusts are diseases found on many species including crop plants such as wheat, corn, beans and others. They are caused by fungi whose life cycle includes multiple development steps with the formation of rust colored uredospores in... 

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