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Filtering by: Creator Dye, Paul Advisor Hansen, Everett M. Subject Douglas fir -- Diseases and pests

Pathogenesis and intertree transmission of Verticicladiella wageneri in Douglas-fir (Pseudotsuga menziesii)

Creator:

Hessburg, Paul F.

Abstract:

Verticicladiella wageneri Kendr. is a vascular wilt pathogen of Douglas-fir in the Pacific Northwest, The disease is characterized by black staining of colonized sapwood; crown symptoms are those typical of a wilting syndrome. Histopathological studies revealed that the pathogen is limited to the xylem but causes vascular dysfunction in both...

Resource Type:

Dissertation

Full Text:

wageneri in Douglas-fir (Pseudotsuga menziesii) AN ABSTRACT OF THE THESIS OF Paul Francis Hessburg for
Phylogenetics, population genetics, molecular epidemiology, and pathogenicity of the Douglas-fir Swiss needle cast pathogen Phaeocryptopus gaeumannii

Creator:

Winton, Loretta M.

Abstract:

A hierarchical series of studies, based mainly on molecular data, was conducted to elucidate the life history of the Douglas-fir Swiss needle cast pathogen Phaeocryptopus gaeumannii at macro- and micro-evolutionary scales. This information was then utilized to design and evaluate molecular diagnostic tools for use in studies on the epidemiology...

Resource Type:

Dissertation

Full Text:

. Special thanks Wendy Sutton, Paul Reeser, Jynene Black, Cristel Denis, and several student workers who