Northern Research Station

Title: Evolution of invading forest pathogens via interspecific hybridization

Author: Brasier, Clive

Date: 2003

Source: In: Fosbroke, Sandra L.C.; Gottschalk, Kurt W., eds. Proceedings, U.S. Department of Agriculture interagency research forum on gypsy moth and other invasive species 2002; 2002 January 15-18; Annapolis, MD. Gen. Tech. Rep. NE-300. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 3-4.

Station ID: GTR-NE-300

Description: Traditional morphologically-based fungal species concepts have tended to go hand in-hand with a perception that fungal species are genetically 'firewalled' units between which almost no gene flow occurs. Also, prior to 1990, known examples of interspecific hybridization in fungi were very rare. However, observations on the internationally invading Dutch elm disease pathogens suggested that intense ecological disturbance events, including introductions or invasions, could result in hybridization. Since this could also lead to changes in a pathogen's aggressiveness, host range or other fitness attributes, it has considerable implications for the health of forests and natural ecosystems.

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Citation

Brasier, Clive  2003.  Evolution of invading forest pathogens via interspecific hybridization.   In: Fosbroke, Sandra L.C.; Gottschalk, Kurt W., eds. Proceedings, U.S. Department of Agriculture interagency research forum on gypsy moth and other invasive species 2002; 2002 January 15-18; Annapolis, MD. Gen. Tech. Rep. NE-300. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 3-4..