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Scientists & Staff

Michael E. Ostry

Note: this person is no longer an employee of the Northern Research Station

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National Research Highlights

Bronze Leaf Disease Poses a Threat to Aspen Breeding (2013)
Bronze leaf of hybrid aspen is a systemic disease that results in a characteristic dark purple to brown pigmentation of infected aspen leaves in late summer. Branches on affected trees die over a period of several years until entire trees eventually die. Many otherwise promising hybrids and natural hybrids are highly susceptible, which suggests that this disease is an important ecological natural genetic barrier that maintains pure aspen species. Forest Service scientists have studied and characterized the complete life cycle, pathology, and host range of this fungus, which were previously unknown.


Last updated on : 02-May-2016