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Faculty Profile
Charles Maynard


Orange horizontal rule

216 Marshall Hall



Iowa State University Forest Biology & Wood Science 1980  Ph.D.
Iowa State University Forest Biology 1977  M.S.
Iowa State University Forest Management 1974  B.S.

Research Areas of Interest

Woody plant tissue culture, genetic engineering a blight-resistant American chestnut, conventional forest genetics & tree improvement, forest ecology, forest health, restoration ecology

Courses Taught

BTC 426/EFB 626: Plant Tissue Culture Methods, an upper division/graduate course that introduces plant tissue culture as a foundation for biotechnology research and as a propagation method. This course emphasizes laboratory instrumentation (microbalances, pH meter, autoclave, laminar-flow hood, stereomicroscope and other common pieces of tissue culture laboratory equipment) and basic aseptic techniques for establishing cell cultures, producing transgenic cell lines, and regenerating whole plants. As a semester-long project, students will research, design, and implement a micropropagation system for a plant species of their own choosing.

FOR 481: Introduction to Arboriculture, an upper division course that is required for the Urban Forestry Minor. Intended for students interested in professional arboriculture, as well as students interested in planting, pruning and otherwise caring for their own trees.  Intro. to Arboriculture is about trees in close association with people and the built environments they create. We start with some plant physiology, including the various environmental cues that plants use to predict and respond to changing seasons. We then turn to more applied topics like tree planting, pruning, climbing, and above all, safety.   

Recent Publications

Book chapter

Maynard, C.A., L.D. McGuigan, A.D. Oakes, B. Zhang, A.E. Newhouse, L.C. Northern, A.M. Chartrand, L.R. Will, K.M. Baier, and W.A. Powell. (2014). Chestnut, American (Castanea dentata (Marsh.) Borkh.) Chapter 13 In: Wang, K. Methods in Molecular Biology. Third Edition: Agrobacterium Protocols.

Refereed publications

Newhouse, A.E., L.D. Polin-McGuigan, K.A. Baiera, K.E.R. Valletta, W.H. Rottmann, T.J. Tschaplinskic, C.A. Maynard, and W.A. Powell. 2014. Transgenic American Chestnuts Show Enhanced Blight Resistance and Transmit the Trait to T1 Progeny, Plant Science, 228:88–97.

Newhouse, A. E., J. E. Spitzer, C.A. Maynard, and W.A. Powell. 2014. Chestnut leaf inoculation assay as a rapid predictor of blight susceptibility. Plant Dis. 98:4-9.

Nelson, C.D., W.A. Powell, C.A. Maynard, K.M. Baier, A.E. Newhouse, S.A. Merkle, C.J. Nairn, L. Kong, J.E. Carlson, C. Addo-Quaye, M.E. Staton, F.V. Hebard, L.L. Georgi, A.G. Abbott, and B.A. Olukolu. 2013. The Forest Health Initiative, American chestnut (Castanea dentata) as a model for forest tree restoration: biological research program. Acta Hort  (ISHS) 1019:179-189

Oakes, A.D., W.A. Powell, and C.A. Maynard. 2013. Doubling acclimatization survival of micropropagated American chestnuts with darkness and shortened rooting induction time. J. Environ. Hort. 31(2):77–83.

Zhang  B., A.D. Oakes, A.E. Newhouse, K.M. Baier, C.A. Maynard, and W.A. Powell. 2013. A threshold level of oxalate oxidase transgene expression reduces Cryphonectria parasitica - induced necrosis in a transgenic American chestnut (Castanea dentata) leaf bioassay. Transgenic Research 22, Issue 5 (2013), Page 973-982 (open access at

Baier, K.M., C.A. Maynard, and W.A. Powell. 2012. Early flowering in chestnut species induced under high intensity, high dose light in growth chambers. Journal of The American Chestnut Foundation 26:8-10.

D’Aminco, T. Horton, C. Maynard, and W. Powell. 2011. Assessing ectomycorrhizal associations and transgene expression in transgenic Castanea dentata. (Extended abstract for the IUFRO meeting in 2011) BioMed Central (BMC) Proceedings 2011, 5(Suppl 7):O54.

Zhang, B., A. Newhouse, L. McGuigan, C. Maynard, and W. Powell. 2011. Agrobacterium-mediated co-transformation of American chestnut (Castanea dentata) somatic embryos with a wheat oxalate oxidase gene. (Extended abstract for the IUFRO meeting in 2011) BioMed Central (BMC) Proceedings 2011, 5(Suppl 7):O43.