Contact Info

Primary Title: 
Assistant Professor
Department of Botany and Plant Pathology
Email Contact: 
Voice Contact: 
(541) 737-1907
Office/Lab: Cordley 1082/1085


Ph.D., 2010, University of Alberta


Research Description: 

Forest pathology; the genomics host-parasite interactions in natural ecosystems; impacts of biotic disturbance on forest structure and function; molecular mechanisms of innate immunity in plants; tree and pathogen genomics; Populus spp.; Sphaerulina musiva.

  • Research at the OSU forest pathology lab is focused on understanding the interaction between fungal pathogens and forest trees. Broadly, we study the relationship between genes in the host and pathogen and how they impact virulence and pathogenicity. The over arching goal of this research is to understand how these interactions can be scaled to elucidate landscape level patterns of biotic disturbance. Specifically, we are using the PopulusSphaerulina pathosystem to study host parasite interactions at the genomic level in order to develop a mechanistic understanding of this system. A variety of computational and molecular tools are used to achieve this goal.


LeBoldus, J.M. Kinzer, K., Richards, J., Zhu, Y., Yan, C., Friesen, T.L., Brueggeman, R. (In Press) Genotype-by-sequencing of the plant pathogenic fungi Pyrenophora teres and Sphaerulina musiva utilizing Ion torrent sequence technology. Molecular Plant Pathology.(doi: 10.1111/mpp.12214)

Qin, R., LeBoldus, J.M. (2014) The infection biology of Sphaerulina musiva: clues to understanding a forest pathogen. PloS ONE. e103446.

Qin, R., Stanosz G.R., LeBoldus J.M. (2014) A non-wounding greenhouse screening protocol for prediction of field resistance of hybrid poplar to Septoria canker. Plant Disease 98: 1106-1111.

Liang, H., Staton, M., Xu, Y., Xu, T., and LeBoldus, J.M. (2014) Comparative expression analysis of resistant and susceptible Populus clones inoculated with Septoria musiva. Plant Science 223: 69-78.

LeBoldus, J.M., Isabel N., Floate K.D., Blenis P.V., Thomas B.R. (2013) Testing the ‘hybrid susceptibility’ and ‘phenological sink’ hypotheses using the P. balsamifera – P. deltoides hybrid zone and Septoria leaf spot [Septoria musiva] PLoS ONE. e84437.

LeBoldus, J.M., Zhang, Q., Kinzer, K. (2012) First report of dollar spot caused by Sclerotinia homoeocarpa on Agrostis stolonifera in North Dakota. Plant Disease 96: 1071.

LeBoldus, J.M., Manolii, V.P., Turkington, T.K., Strelkov, S.E. (2012) Adaptation to Brassica host genotypes by a single-spore isolate and population of Plasmodiophora brassicae [clubroot]. Plant Disease 96: 833-838.

LeBoldus, J.M., Blenis, P.V., Thomas, B.R. (2010) A method to induce stem cankers by inoculating nonwounded Populus clones with Septoria musiva spore suspensions. Plant Disease 94: 1238-1242.

LeBoldus, J.M., Blenis, P.V., Thomas, B.R., Feau, N., Bernier, L. (2009) Susceptibility of Populus balsamifera to Septoria musiva: a field study and greenhouse experiment. Plant Disease 93: 1146-1150.

LeBoldus, J.M., Blenis, P.V., Thomas, B.R. (2008) Clone by isolate interaction in the hybrid poplar – Septoria musiva pathosystem. Canadian Journal of Forest Research. 38: 1888-1896

LeBoldus, J.M., Blenis, P.V., Thomas, B.R. 2007. Evaluating the Interaction between Genotype and Water Stress in the Hybrid Poplar – Septoria musiva Pathosystem. Canadian Journal of Botany 85: 1098-1102.