Department of Forest, Rangeland, and Fire Sciences
University of Idaho
875 Perimeter Drive MS 1133
Moscow, Idaho 83844-1133
- Ph.D. Botany, University of Guelph, 1988
- B.Sc. Plant Science, McGill University, 1983
Forest and plant pathology
Biological control of invasive plants
Endophyte-mediated resistance to pests and pathogens in forest plantations
BUSBY, P.E., LAMIT, L., KEITH, A.R., NEWCOMBE, G., GEHRING, C., WHITHAM, T.G., and DIRZO, R. 2014. Genetics-based interactions among plants, pathogens and herbivores define arthropod community structure. Ecology: in press.
BUSBY, P.E., NEWCOMBE, G., DIRZO, R., and WHITHAM, T.G. 2014. Differentiating genetic and environmental drivers of plant-pathogen community interactions. Journal of Ecology: DOI: 10.1111/1365-2745.12270.
ASCHEHOUG, E., THARAYIL, N., CALLAWAY, R.M., and NEWCOMBE, G. 2014. Fungal endophyte increases the allelopathic effects of an invasive forb. Oecologia 175: 285-291.
NEWCOMBE, G. & PSCHEIDT, J. 2014. Rust diseases of Rhododendron and Azalea. In revised edition of the Compendium of Rhododendron and Azalea Diseases. D.M. Benson & R. Linderman, eds. APS Press.
BUSBY, P.E., ZIMMERMAN, N., WESTON, D.J., JAWDY, S.A., HOUBRAKEN, J., and NEWCOMBE, G. 2013. Leaf endophytes and Populus genotype affect severity of damage from the necrotrophic leaf pathogen, Drepanopeziza populi. Ecosphere 4(10): article 125 (12 pages).
OSTRY, M., RAMSTEDT, M., NEWCOMBE, G., and STEENACKERS, M. 2013. Diseases of Poplars and Willows. Chapter 8 in The Poplar and Willows Book. Edited by Jud Isebrands and Jim Richardson. Published by the International Poplar Commission of UN FAO.
BUSBY, P.E., NEWCOMBE, G., DIRZO, R., and WHITHAM, T.G. 2013. Genetic basis of pathogen community structure for foundation tree species in a common garden and in the wild. Journal of Ecology 101: 867-877.
RAGHAVENDRA, A.K.H. and NEWCOMBE, G. 2013. The contribution of foliar endophytes to quantitative resistance to Melampsora rust. New Phytologist 197: 909-918.
RAGHAVENDRA, A.K.H., NEWCOMBE, G., SHIPUNOV, A., BAYNES, M., and TANK, D. 2013. Exclusionary interactions among diverse fungi infecting developing seeds of Centaurea stoebe. FEMS Microbiology Ecology 84: 143-153.
XIAO, S., CALLAWAY, R. M., NEWCOMBE, G., and E.T. ASCHEHOUG. 2012. Models of experimental competitive intensities predict home and away differences in invasive impact and the effects of an endophytic mutualist. American Naturalist 80: 707-718.
Ongoing collaboration with the Forest Service and the U.S. National Parks Service on whitebark pine restoration projects at Crater Lake and Mount Rainier.
Ongoing project to help the Forest Service find additional biocontrol agents for cheatgrass.
Working with forest-products companies to improve disease resistance in hybrid poplar plantations.