Dr. Larry Peterson

Dr. Larry Peterson
Professor Emeritus
Department of Molecular and Cellular Biology


  • B.Ed. - University of Alberta
  • M.Sc. - University of Alberta
  • Ph.D. - University of California (Davis)


I closed my lab at the end of 2009 but continue to collaborate with Dr. Hugues Massicotte, University of Northern British Columbia in a study of mycoheterotrophic plants.

Selected Publications


  • Peterson, Larry and Peterson, Carol.  When Is A 'Flower' Not A Flower? and other intriguing questions about plants.  Published by Volumes, Kitchener (2014).
  • Peterson, R. Larry, Peterson, Carol A. and Lewis H. Melville. 2008. Teaching Plant Anatomy Through Creative Laboratory Exercises. Published by NRC Research Press, Ottawa.
  • Peterson, R. Larry, Hughes B. Massicotte and Lewis H. Melville. 2004. Mycorrhizas: Anatomy and Cell Biology . NRC Research Press.


  • Peterson R. Larry, Dean P. Whittier and Lewis H. Melville. 2011. Images of the Morphology and Anatomy of Seedless Vascular Plants and Gymnosperms. Canadian Science Publishing.
  • Peterson, R. Larry, Hugues B. Massicotte, Lewis H. Melville and Forrest Phillips. 2006. Mycorrhizas: Anatomy and Cell Biology Images, NRC Research Press.

Book Chapters

  • Massicotte, H.B., R.L. Peterson, L.H.Melville, and D.L. Luoma, D.L. 2012. Biology of mycoheterotrophic and mixotrophic plants.  In: Biocomplexity of Plant –Fungal Interactions. Ed. D. Southworth  John Wiley & Sons, Inc. Oxford.  pp. 109-130
  • Imhof, S., H.B. Massicotte, L.H. Melville, and R.L. Peterson 2012. Subterranean morphology and mycorrhizal structures. In: Mycoheterotrophy: The Biology of Plants Living on Fungi. Ed. V.S.F.T. Merckx Springer, New York. pp 157-214.
  • Timonen, S. and R.L. Peterson. 2002. Cytoskeleton in mycorrhizal symbiosis. In: Diversity and Integration in Mycorrhizal Symbioses. Eds. S.E. Smith and A. Smith. Kluwer Academic Press. 199-210.
  • Massicotte, H.B., L.H. Melville and R.L. Peterson. 2002. Structure-function relationships of mycorrhizal associations revealed by electron microscopy. In: Industrial Applications of Electron Microscopy. Ed. Z.R. Li. Marcel Dekker Publishers. 485-505.
  • Peterson, R. L , and F. C. Guinel. 2000. The use of plant mutants to study regulation of colonization by AM fungi. In: Arbuscular mycorrhizas: Physiology and Function . Eds. Y. Kapulnik and D. D. Douds, Jr. Kluwer Academic Publishers. pp147-171.
  • Peterson, R.L., Y. Uetake and L. Armstrong. 2000. Interactions between fungi and plant cytoskeleton. In : Current Advances in Mycorrhizae Research. Eds. G.K. Podila and D.D. Douds American Phytopathological Society Press. pp. 157-178.
  • Peterson, R.L. and K.J. Stevens. 2000. Evidence for the uptake of non-essential and essential ions by root hairs and their effect on root hair development. In : Cell and Molecular Biology of Plant Root Hairs. Eds. R.W. Ridge and A.M. Emons. Springer. pp.179-195.

Refereed Papers

  • Wagg, C., P.M. Antunes, and R.L. Peterson. 2011. Arbuscular mycorrhizal fungal phylogeny-related interactions with a non-host. Symbiosis, 53: 41-46.
  • Wagg, C., B.C. Husband, D, S, Green, H.B. Massicotte, and R.L. Peterson. 2011. Soil microbial communities from an elevational cline differ in their effect on conifer seedling growth. Plant Soil, 340: 491-504.
  • Massicotte, H.B., R.L. Peterson, L.H. Melville, and L.E. Tackaberry. 2010. Hudsonia ericoides and Hudsonia tomentosa: Anatomy of mycorrhizas of two members in the Cistaceae from Eastern Canada. Botany, 88: 607-616.
  • Massicotte, H.B., L.H. Melville, R.L. Peterson, L.E. Tackaberry, and D.L. Luoma. 2010. Structural characteristics of root-fungus associations in two mycoheterotrophic species, Allotropa virgata and Pleuriscospora fimbriata (Monotropoideae) from southwest Oregon, USA. Mycorrhiza, 20: 391-397.
  • Domíngues, L.S., L. Melville, A. Sérsic, A. Faccio, and R.L. Peterson. 2009. The mycohetrotroph Arachnitis uniflora has a unique association with arbuscular mycorrhizal fungi. Botany, 87: 1198-1208.
  • Peterson, R. Larry, Cameron Wagg and Michael Pautler. 2008. Associations between microfungal endophytes and roots: do structural features indicate function? Botany, 86:445-456.
  • Massicotte, H.B., L.H. Melville. L.E. Tackaberry and R.L. Peterson 2008. A comparative study of mycorrhizas in several genera of Pyroleae (Ericaceae) from western Canada. Botany, 86: 610-622.
  • Wagg, Cameron, M. Pautler, H.B. Massicotte, and R.L. Peterson. 2008. The co-occurrence of ectomycorrhizal, arbuscular mycorrhizal, and dark septate fungi in seedlings of four members of the Pinaceae. Mycorrhiza, 18: 103-110.
  • Gonzalez-Guerrero, M., L.H. Melville, N. Ferrol, J.N.A. Lott, C. Azcón-Aguilar and R.L. Peterson. 2008. Ultrastructural localization of heavy metals in the extraradical mycelium and spores of the arbuscular mycorrhizal fungus Glomus intraradices. Can. J. Microbiol. 54: 103-110.
  • Massicotte, H.B., L.H. Melville, L.E. Tackaberry and R. L. Peterson. 2007. Pityopus californicus: Structural characteristics of seed and seedling development in a myco-heterotrophic species. Mycorrhiza, 17: 647-653.
  • Murray, Jeremy, Bogumil Karas, Loretta Ross, Andreas Brachmann, Cameron Wagg, Ryan Geil, Jillian Perry, Katarzyna Nowakowski, Mandy McGillivary, Mark Held, Jens Stougaard, Larry Peterson, Martin Parniske, and Krzysztof Szczyglowski . 2006. Genetic suppressors of the Lotus japonicus har1-1 hypernodulation phenotype. Mol. Plant Microbe Interact. 19: 1082-1091.
  • Murray, Jeremy, Ryan Geil, Cameron Wagg, Bogumil Karas, Krzysztof Szczyglowski and R. Larry Peterson. 2006. Genetic suppressors of Lotus japonicus har1-1 hypernodulation show altered interactions. Functl. Plant Biol. 33: 749-755.
  • Saito, K., Y. Kuga- Uetake, M. Saito and R. L. Peterson. 2006. Vacuolar localization of phosphorus in hyphae of Phialocephala fortinii, a dark septate fungal endophyte. Can. J. Microbiol. 52: 643-650.
  • Domíguez, L., A. Sércic. L. Melville and R.L. Peterson. 2006. ‘Prepackaged symbiosis’: propagules on roots of the myco-heterotrophic plant Arachnitis uniflora. New Phytol. 169: 191-198.