Association between Virulence and Triazole Tolerance in the Phytopathogenic Fungus Mycosphaerella graminicola
|
| |
| Authors: | Lina Yang Fangluan Gao Liping Shang Jiasui Zhan Bruce A. McDonald |
| |
| Affiliation: | 1. Key Lab for Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, Fujian, People''s Republic of China.; 2. Laboratory of Plant Virology of Fujian Province, Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, People''s Republic of China.; 3. Institute of Integrative Biology, ETH Zurich, Zürich, Switzerland.; Soonchunhyang University, Republic of Korea.; Yun, |
| |
| Abstract: | Host resistance and synthetic antimicrobials such as fungicides are two of the main approaches used to control plant diseases in conventional agriculture. Although pathogens often evolve to overcome host resistance and antimicrobials, the majority of reports have involved qualitative host – pathogen interactions or antimicrobials targeting a single pathogen protein or metabolic pathway. Studies that consider jointly the evolution of virulence, defined as the degree of damage caused to a host by parasite infection, and antimicrobial resistance are rare. Here we compared virulence and fungicide tolerance in the fungal pathogen Mycosphaerella graminicola sampled from wheat fields across three continents and found a positive correlation between virulence and tolerance to a triazole fungicide. We also found that quantitative host resistance selected for higher pathogen virulence. The possible mechanisms responsible for these observations and their consequences for sustainable disease management are discussed. |
| |
| Keywords: | |
|
|
