319 Illick Hall
1 Forestry Dr.
Syracuse, New York 13210
Co-Director of the American Chestnut Research & Restoration Project
Roosevelt Wild Life Station Scientist-in-Residence
2013 Forest Biotechnologist of the Year
Graduate Research Topic
American elm transformations for Dutch Elm disease resistance and phytoremediation.
I have just recently joined the Chestnut Group after living 26 years in Florida. My goal is to graduate with the background and experience necessary to gain a career in the area of plant biotechnology, with a focus in genetic engineering.
Graduate Research Topic
I am presently focused on the effects of light intensity and spectral quality on growth and shoot initiation.
"Either do or do not...there is no try." Yoda
Newhouse, AE, JE Spitzer, CA Maynard, WA Powell. 2014. Leaf Inoculation Assay as a Rapid Predictor of Chestnut Blight Susceptibility. Plant Disease 98:4-9
Zhang B, AD Oakes, AE Newhouse, KM Baier, CA Maynard and WA 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
Nelson, CD, WA Powell, CA Maynard, KM Baier, AE Newhouse, SA Merkle, CJ Nairn, L Kong, JE Carlson, C Addo-Quaye, ME Staton, FV Hebard, LL Georgi, AG Abbott, BA Olukolu. 2013. The Forest Health Initiative, American chestnut (Castanea dentata) as a Model for Forest Tree Restoration: Biological Research Program. Acta Hort (in press)
Oakes, AD, WA Powell, and CA Maynard. 2013. Doubling Acclimatization Survival of Micropropagated American Chestnuts with Darkness and Shortened Rooting Induction Time. J. Environ. Hort. 31(2):77–83
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
Oakes, A.D, N.A. Kazcmar, C.A. Maynard, W.A. Powell. 2012. Vegetative Propagation of American Elm (Ulmus Americana) Varieties from Softwood Cuttings. J. Environ. Hort. 30(2):73–76
Barakat, A., M. Staton, C. Cheng, J. Park, N. B. M. Yassin, S. Ficklin, C. Yeh, F. Hebard, K. Baier, W. Powell, S. C. Schuster, N. Wheeler, A. Abbott, J. E Carlson and R. Sederoff. 2012. Chestnut resistance to the blight disease: insights from transcriptome analysis. BMC Plant Biology 2012, 12:38
D’Amico, 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
Sisco, P.H., Sederoff, R.R., Tomkins, J.P., Carlson, J.E., Kubisiak, T.L., Staton, M.E., Hebard, F.V., Anagnostakis, S.L., Powell, W.A. and Smith, C.P. 2009. The United States National Science Foundation project on developing tools for the study of the Fagaceae: Castanea, Quercus, and Fagus. Acta Hort. (ISHS) 844:267-274
Barakat, A., D. S. DiLoreto, Y. Zhang, C. Smith, K. Baier, W. A. Powell, N. Wheeler, R. Sederoff, J. E. Carlson. 2009. Comparison of the transcriptomes of American chestnut (Castanea dentata) and Chinese chestnut (Castanea mollissima) in response to the chestnut blight infection. BMC Plant Biology. 9:51 (pp. 1-11)
Newhouse, A.E., F. Schrodt, H. Liang, C.A. Maynard, W.A. Powell. 2007. Transgenic American Elm Shows Reduced Dutch Elm Disease Symptoms and Normal Mycorrhizal Colonization. Plant Cell Reports 26:977-987
Welch, A.J., C.A. Maynard, A.J. Stipanovic, and W.A. Powell. 2007. The effects of oxalic acid on transgenic Castanea dentata callus tissue expressing oxalate oxidase. Plant Science 172:488-496
Powell, W. A., P. Morley, M. King and C. A. Maynard. 2007. Small stem chestnut blight resistance assay. Journal of The American Chestnut Foundation 21(2): 34-38
Rothrock, R., L. McGuigan, A. Newhouse, W.A. Powell and C.A. Maynard. 2007. Plate Flooding as an Alternative Agrobacterium-Mediated Transformation Method for American Chestnut Somatic Embryos. Plant Cell Tissue and Organ Culture 88:93-99
Merkle, S.A., G.M. Andrade, C.J. Nairn, W.A. Powell and C.A. Maynard. 2007. Restoration of threatened species: a noble cause for transgenic trees. Tree Genetics and Genomes 3:111-118
Polin L.D., H. Liang, R. Rothrock, M. Nishii, D. Diehl, A. Newhouse, C.J. Nairn, W. A. Powell, and C.A. Maynard. 2006. Agrobacterium-mediated transformation of American chestnut (Castanea dentata (Marsh.) Borkh.) somatic embryos. Plant Cell Tissue and Organ Culture. 84: 69-79
Powell, W.A., S.A. Merkle, H. Liang, and C.A. Maynard. 2005. Blight Resistance Technologies: Transgenic Approaches. In, proc. of conf. on restoration of American chestnut to forest lands, Steiner, K.C. and J.E. Carlson (eds.)Connors, B.J., M. Miller, C.A. Maynard, and W.A. Powell. 2002. American chestnut promoters capable of directing reporter gene expression in transgenic Arabidopsis plants. Plant Science 163:771-781
Liang, H., H. Gao, C.A. Maynard, and W.A. Powell. 2005. Expression of a self-processing, putative pathogen resistance-enhancing gene construct in Arabidopsis. Biotech. L. 27:435-442
Nelson, C.D., W.A. Powell, S.A. Merkle, J.E. Carlson, F.V. Hebard, N. Islam-Faridi, M.E. Staton, L. Georgi. 2014. Chestnut. In: K. Ramawat, J.M. Merillon, M.R. Ahuja (eds), Tree Biotechnology, Chapter 1. CRC Press, Boca Raton, Florida, USA (accepted, August 2013).
Liang, H, P.A. Kumar, V. Nain, W.A. Powell, J.E. Carlson. Selection and Screening Strategies. Chapter 4. In: C. Kole, C.H. Michler, A.G. Abbott and T,C. Hall (eds) Transgenic Crop Plants: Volume 1: Principles and Development. Springer-Verlag – Berlin, Heidelberg, New York, Tokyo, 2010, pp 85-144
Andrew E. Newhouse, Nicholas S. Kaczmar, Charles A. Maynard and William A. Powell. American Elm, in Kole, C. and Hall, T. C. (eds.), “Compendium of Transgenic Crop Plants: Transgenic Forest Tree Species”, Blackwell Publishing, Oxford, UK, 2008, pp 241-262.
Maynard, C.A., W.A. Powell, L.D. Polin-McGuigan, A.M. Viéitez, A. Ballester, E. Corredoira, S.A. Merkle and G.M. Andrade (2008) Chestnut. In: Kole, C., Hall, T.C. (eds.) “A Compendium of Transgenic Crop Plants: Forest Tree Species”, Blackwell Publishing, Oxford, UK, 2008. Pp169-192
Powell, W.A., C.A. Maynard, B. Boyle, and A. Seguin. (2006). Fungal and bacterial resistance in transgenic trees. Pages 235-252. In: M. Fladung and D. Ewald, Eds., Tree Transgenics, Recent Developments. Springer, Berlin Heidelberg, Germany. 357p.
Newhouse, A., F. Schrodt, C. Maynard, and W. Powell. (2006). American elm (Ulmus americana). Pages 99-112 In: K. Wang, Ed., Agrobacterium Protocols: (2nd edition) Methods in Molecular Biology Book Series #344, Humana Press, Inc., Totowa, NJ. 485 pages
Maynard, C.A., L. D. Polin, S. LaPierre, R. E. Rothrock, and W. A. Powell. (2006). American chestnut (Castanea dentata (Marsh.) Borkh.). pages 239-251. In: K. Wang, Ed., Agrobacterium Protocols: (2nd edition) Methods in Molecular Biology Book Series #344, Humana Press, Inc., Totowa, NJ.
Maynard, C.A., Powell, W.A., and McGuigan, L.D. (2007) Bringing Back the American Chestnut through Biotechnology. Hardwood Matters: National Hardwood Lumber Association Magazine, 66: 20-21.
Powell, W.A., S.A. Merkle, H. Liang, and C.A. Maynard. 2005. Blight Resistance Technologies: Transgenic Approaches. In, proc. of conf. on restoration of American chestnut to forest lands, Steiner, K.C. and J.E. Carlson (eds.) (http://chestnut.cas.psu.edu/Meetings/NPS/proceedings/_2_09-Powell%20manuscript.pdf)