Ronald D Hatfield
U.S. Dairy Forage Research Center
Plant Physiologist
Phone: (608) 890-0062
Fax: (608) 890-0076
1925 LINDEN DR W
MADISON, WI, 53706-1108
Grabber, J.H., Hatfield, R.D., Ralph, J., Lu, F. 2008. Coniferyl Ferulate Incorporation into Lignin Enhances the Alkaline Delignification and Enzymatic Degradation of Cell Walls. Biomacromolecules.
Hatfield, R.D., Marita, J.M., Frost, K. 2008. Variability of grass lignin acylation [abstract]. The Pan American Congress on Plants and Bioenergy, June 22-25, 2008, Merida, Mexico. Abstract M705, p. 36.
Sullivan, M.L., Hatfield, R.D. 2008. A novel red clover hydroxycinnamoyl transferase has enzymatic activities consistent with a role in phasalic acid [2-o-(caffeoyl)-l-malate] biosynthesis [abstract]. Gordon Research Conference on Plant Molecular Biology, July 13-18, 2008, Holderness, New Hampshire.
Hatfield, R.D., Sullivan, M.L., Schmitz, G. 2008. Characteristics of polyphenol oxidases [abstract]. The 2008 Joint Meeting of the American Society of Plant Biologists and the Sociedad Mexicana de Bioquimica Rama: Bioquimica y Biologia Molecular de Plantas, June 26-July 1, 2008, Merida, Mexico. Abstract P04010. p. 103.
Hatfield, R.D., Marita, J.M. 2008. Characterization of a p-coumaroyl transferase responsible for the incorporation of pCA into grass cell walls [abstract]. Ferulate '08: An International Conference on Hydroxycinnamates and Related Plant Phenolics, August 25-27, 2008, Minneapolis, Minnesota. p. 53.
Grabber, J. H., Ralph, J., Hatfield, R. D., Lu, F. 2008. Copolymerization of coniferyl ferulate with monolignols: impact on lignin formation and alkaline delignification of maize cell walls. Proceedings of Ferulate '08. p. 36.
Grabber, J. H., Hatfield, R. D., Ralph, J., Lu, F. 2008. Coniferyl ferulate incorporation into lignin dramatically enhances the delignification and enzymatic hydrolysis of maize cell walls [abstract]. Proceedings of Biotechnology for Fuels and Chemicals Symposium. 8(05):56.
Martin, N.P., Mertens, D.R., Hatfield, R.D., Jung, H.J. 2008. Alfalfa: forage crop of the future. In: Proceedings of the 28th Kentucky Alfalfa Conference, February 21, 2008, Cave City, Kentucky, p. 17-26.
Sullivan, M.L., Hatfield, R.D., Samac, D.A. 2008. Cloning of an alfalfa polyphenol oxidase gene and evaluation of its potential in preventing postharvest protein degradation. Journal of the Science of Food and Agriculture. 88(8):1406-1414.
Ralph, J., Hatfield, R.D., Grabber, J.H., Lu, F., Kim, H., Marita, J.M. 2008. Designing lignins for improved biomass processing. In: Proceedings of the Funcfiber 2008 International Symposium on the Biology and Biotechnology of Wood, March 10-12, 2008, Umea, Sweden. p. 14
Schmitz, G.E., Sullivan, M.L., Hatfield, R.D. 2008. Three polyphenol oxidases from red clover (Trifolium pratense) differ in enzymatic activities and activation properties. Journal of Agricultural and Food Chemistry. 56(1):272-280.
Schmitz, G.E., Hatfield, R.D., Sullivan, M.L. 2007. Characteristics of polyphenol oxidases from red clover (Trifolium pratense)[abstract]. In: Program and Abstract Book of the Plant Biology and Botany 2007 Joint Congress, July 8-11, 2007, Chicago, Illinois. p. 23.
Marita, J.M., Hatfield, R.D., Frost, K.E. 2007. Lignin acylation in grasses [abstract]. In: Program and Abstract Book of the Plant Biology and Botany 2007 Joint Congress, July 8-11, 2007, Chicago, Illinois. p. 106.
Lee, M.R., Minchin, F.R., Hatfield, R.D., Sullivan, M.L. 2007. Red clover polyphenol oxidase reduces ruminal lipolysis in in vitro batch culture. In: Proceedings of the British Society of Animal Science. April 2-4, 2007, Southport, United Kingdom. p. 25.
Digman, M.F., Shinners, K.J., Dien, B.S., Hatfield, R.D., Li, X., Muck, R.E., Weimer, P.J. 2007. On-farm pretreatment technologies for improving enzymatic digestibility of cellulose and hemicellulose present in perennial grass. In: Proceedings of 2007 Annual Meeting of American Society of Agricultural and Biological Engineers, June 17, 2007, Minneapolis, Minnesota. Paper No. 071021.
Hatfield, R.D., Jung, H.G., Broderick, G.A., Jenkins, T. 2007. Nutritional chemistry of forages. In: Barnes, R.F., Nelson, C.J., Moore, K.J., Collins, M., editors. The Science of Grassland Agriculture. Sixth Edition of Forages, Volume II. Ames, IA:Blackwell Publishing. p. 467-485.
Hatfield, R.D., Grabber, J.H., Sullivan, M.L., Waghorn, G., Mccaslin, M. 2006. Transforming Forage Plants to Increase Nitrogen Utilization in Dairy Systems: What Are the Possibilities? Journal of Dairy Science. 89(supplement 1):633.
Martin, N.P., Hatfield, R.D., Mertens, D.R. 2005. Reinventing alfalfa for dairy cattle and novel uses. Proceedings of the 35th California Alfalfa & Forage Symposium. p. 299-311.
Sullivan, M.L., Hatfield, R.D. 2006. Polyphenol oxidase and o-diphenols inhibit post-harvest proteolysis in red clover and alfalfa. Crop Science. 46:662-670.
Hatfield, R.D., Sullivan, M.L. Muck, R.E. 2005. Using the red clover polyphenol oxidase gene to inhibit proteolytic activity in alfalfa. In: Park, R.S., Stronge, M.D., editors. Silage Production and Utilization. XIVth International Silage Conference, a Satellite Workshop of the XXth International Grassland Congress, July 2005, Belfast, Northern Ireland. p. 212.
Marita, J.M., Hatfield, R.D., Brink, G.E. 2005. Polyphenol oxidase activity and in vitro proteolytic inhibition in grasses [abstract]. XIVth International Silage Conference. p. 210.
Hartnell, G.F., Hatfield, R.D., Mertens, D.R., and Martin, N.P. 2005. Potential benefits of plant modification of alfalfa and corn silage to dairy diets. In: Proceedings of the 20th Southwest Nutrition and Management Conference, University of Arizona, Tucson. p. 156-172.
Grabber, J.H. and R.D. Hatfield. 2005. Methyl Esterification Divergently Affects the Degradability of Pectic Uronosyls in Nonlignified and Lignified Maize Walls. Journal of Agriculture and Food Chemistry. 53: 1546-1549
Sullivan, M.L., Hatfield, R.D., Thoma, S., Samac, D.A. 2004. Cloning of red clover polyphenol oxidase cdnas and expression of active protein in escherichia coli and transgenic alfalfa. Plant Physiology. 136:3234-3244.
Bunzel, M., Ralph, J., Lu, F., Hatfield, R.D., Steinhart, H. 2004. Lignins and ferulate-coniferyl alcohol cross-coupling products in cereal grains. Journal of Agricultural and Food Chemistry. 52:6496-6502.
Sullivan, M.L., Hatfield, R.D., Muck, R.E. Polyphenol oxidase and o-diphenols inhibit post-harvest proteolysis in red clover and alfalfa. 2004. North American Alfalfa Improvement Conference. Available: www.naaic.org/meeting/National/2004NAAIC8TC/2004abstracts/msullivan.pdf.
Grabber, J.H., Hatfield, R.D., Ralph, J. 2003. Apoplastic ph and monolignol addition rate effects on lignin formation and cell wall degradability in maize. Journal of Agricultural and Food Chemistry. 51:4984-4989.
Sullivan, M.L., Thoma, S., Samac, D.A., Hatfield, R.D. 2004. Cloning of red clover and alfalfa polyphenol oxidase genes and expression of active enzymes in transgenic alfalfa. In: Hopkins, A., Wang, Z-Y., Mian, R., Sledge, M., Barker, R.W. editors. Molecular Breeding of Forage and Turf. Netherlands: Kluwer Academic Publishers. p. 189-195.
MARITA, J.M., RALPH, J., HATFIELD, R.D., GUO, D., CHEN, F., DIXON, R. MODIFICATIONS IN LIGNIN OF TRANSGENIC ALFALFA DOWN-REGULATED IN COMT AND CCOAOMT. INTERNATIONAL SYMPOSIUM ON WOOD AND PULPING CHEMISTRY. 2003.
Sullivan, M.L., Thoma, S., Samac, D., Hatfield, R.D. Cloning of red clover and alfalfa polyphenol oxidase genes and expression of active enzymes in transgenic alfalfa. Molecular Breeding of Forage and Turf Conference. 2003. p. 189-195
Martin, N.P., Hatfield, R.D., Mertens, D.R. 2003. Redesigning alfalfa for dairy cattle. In: Land O Lakes Feed Division Leading Producer Conference, January 21, 2003, Wisconsin Dells, Wisconsin. p. 1-3.
FUKUSHIMA, R.S., HATFIELD, R.D. PHENOLIC COMPOSITION OF DIOXANE LIGNINS AS DETERMINED BY NITROBENZENE OXIDATIVE REACTION. MEETING ABSTRACT. 2003b. v. 38. p. 373-378.
MARITA, J.M., VERMERRIS, W., RALPH, J., HATFIELD, R.D. VARIATIONS IN THE CELL WALL COMPOSITION OF MAIZE BROWN MIDRIB MUTANTS. Journal of Agriculture and Food Chemistry. 2003. v. 51. p. 1313-1321. v. 51. pp. 1313-1321.