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                    U.S. DEPARTMENT OF AGRICULTURE
 Wheat, Sorghum and Forage Research: Lincoln, NE
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ARS Home Plains Area Lincoln, Nebraska Wheat, Sorghum and Forage Research People & Locations







Patrick M O`Neill
                        Wheat, Sorghum and Forage Research

                        




                        
                        Biological Science Technician
                        Phone: (402) 472-9288
                        
                        
                        Fax: (402) 472-4020(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            **Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)Responses of wheat constitutively expressing monolignol biosynthetic genes to fusarium head blight caused by fusarium graminearum

- (Abstract Only)Phenylpropanoids following wounding and infection of sweet sorghum lines differing in responses to stalk pathogens
                                                        

- (Peer Reviewed Journal)Khasin, M., Bernhardson, L.F., Oneill, P.M., Palmer, N.A., Scully, E.D., Sattler, S.E., Sarath, G., Funnell-Harris, D.L. 2024. Phenylpropanoids following wounding and infection of sweet sorghum lines differing in responses to stalk pathogens. Phytopathology. 114:177-192. https://doi.org/10.1094/PHYTO-12-22-0459-R.Effects of altering three steps of monolignol biosynthesis on sorghum responses to stalk pathogens and water deficit
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Sattler, S.E., Oneill, P.M., Gries, T.L., Ge, Z., Nersesian, N. 2023. Effects of altering three steps of monolignol biosynthesis on sorghum responses to stalk pathogens and water deficit. Plant Disease. 107:3984-3995. https://doi.org/10.1094/PDIS-08-22-1959-RE.Effects of altering three steps of monolignol biosynthesis on sorghum responses to stalk pathogens and water deficit

- (Abstract Only)Constitutively expressing the sorghum phenylpropanoid pathway gene SbCCoAOMT can improve resistance to fusarium head blight of wheat

- (Abstract Only)Elucidating the mechanism behind increased type-II resistance to fusarium head blight and reduced deoxynivalenol accumulation in wheat lines onstitutively expressing the sorghum phenylpropanoid pathway gene, SbCCoAOMT

- (Abstract Only)The brown midrib (bmr) mutants prevent stalk rots under drought conditions and improve sorghum biomass quality

- (Abstract Only)Funnell-Harris, D.L., Sattler, S.E., Toy, J.J., Oneill, P.M., Khasin, M. 2023. The brown midrib (bmr) mutants prevent stalk rots under drought conditions and improve sorghum biomass quality. Presented at: Sorghum in the 21st Century, Global Sorghum Conference, Montpelier, France, June 5 – 9, 2023. Meeting Abstract Book. p. 142.Response of sorghum lines carrying recently identified brown midrib (bmr) mutations to stalk rot pathogens and water deficit
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Sattler, S.E., Toy, J.J., Oneill, P.M., Bernhardson, L.F. 2023. Response of sorghum lines carrying recently identified brown midrib (bmr) mutations to stalk rot pathogens and water deficit. Plant Pathology. https://doi.org/10.1111/ppa.13702.Phenylpropanoid-based resistance to Fusarium head blight in wheat

- (Abstract Only)Singla, S., Duray, Z., Dill-Macky, R., O’Neill, P., Bernhardson, L., Tatineni, S., Sattler, S., Wegulo, S. and Funnell-Harris, D. (2021) Phenylpropanoid based Fusarium head blight resistance in wheat. Proceedings of the 2021 National Fusarium Head Blight Forum; Virtual. December 6-7, 2021. Retrieved from: https://scabusa.org/forum/2021/2021NFHBForumProceedings.pdf.Constitutive expression of SbCCoAOMT in the phenylpropanoid pathway can improve resistance to fusarium head blight of wheat

- (Abstract Only)Singla, S., Palmer, N.A., Bernhardson, L., Oneill, P.M., Gries, T.L., Duray, Z., Dill-Macky, R., Sattler, S.E., Wegulo, S., Funnell-Harris, D.L. 2022. Constitutive expression of SbCCoAOMT in the phenylpropanoid pathway can improve resistance to fusarium head blight of wheat. Presented at 2022 National Fusarium Head Blight Forum, Tampa, FL, Dec. 4 – 6, 2022. p. 59 of Proceedings  (https://scabusa.org/forum/2022/2022NFHBForumProceedings.pdf)Wound and defense induced cell wall phenylpropanoids in sweet sorghums with differing responses to stalk pathogens

- (Abstract Only)Role of phenylpropanoid pathway genes in conferring resistance to Fusarium head blight of wheat

- (Abstract Only)Association of dhurrin levels and post-flowering non-senescence with resistance to stalk rot pathogens in sorghum bicolor
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Sattler, S.E., Oneill, P.M., Toy, J.J., Bernhardson, L.F., Kilts, M., Khasin, M. 2022. Association of dhurrin levels and post-flowering non-senescence with resistance to stalk rot pathogens in sorghum bicolor. European Journal of Plant Pathology. 163:237-254. https://doi.org/10.1007/s10658-022-02473-2.Pathogen and drought stress affect cell wall and phytohormone signaling to shape host responses in a sorghum COMT bmr12 mutant
                                                        

- (Peer Reviewed Journal)Khasin, M., Bernhardson, L.F., O'Neill, P.M., Palmer, N.A., Scully, E.D., Sattler, S.E., Funnell-Harris, D.L. 2021. Pathogen and drought stress affect cell wall and phytohormone signaling to shape host responses in a sorghum COMT bmr12 mutant. Biomed Central (BMC) Plant Biology. 21:391.  https://doi.org/10.1186/s12870-021-03149-5.Field evaluation of sorghum (Sorghum bicolor) lines that overexpress two monolignol-related genes that alter cell wall composition
                                                        

- (Peer Reviewed Journal)Tetreault, H.M., Oneill, P.M., Toy, J.J., Gries, T.L., Funnell-Harris, D.L., Sattler, S.E. 2020. Field evaluation of sorghum (Sorghum bicolor) lines that overexpress two monolignol-related genes that alter cell wall composition. BioEnergy Research. 13(4)Available:https://link.springer.com/article/10.1007/s12155-020-10218-4. https://doi.org/10.1007/s12155-020-10218-4.Association of post-flowering non-senescence (stay-green) and dhurrin levels in response to stalk rot pathogens in sorghum bicolor

- (Abstract Only)Funnell-Harris, D.L., Sattler, S.E., Oneill, P.M., Bernhardson, L.F., Kilts, M., Khasin, M. 2020. Association of post-flowering non-senescence (stay-green) and dhurrin levels in response to stalk rot pathogens in sorghum bicolor. [abstract]. Plant Health 2020 (virtual). Accepted poster.Response of sorghum enhanced in monolignol biosynthesis to stalk pathogens
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Sattler, S.E., O'Neill, P.M., Gries, T.L., Tetreault, H.M., Clemente, T.E. 2019. Response of sorghum enhanced in monolignol biosynthesis to stalk pathogens. Plant Disease. 103(9):2277-2287. https://doi.org/10.1094/PDIS-09-18-1622-RE.Amylose-free (“waxy”) wheat colonization by fusarium spp. and response to fusarium head blight
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Graybosch, R.A., O'Neill, P.M., Duray, Z.T., Wegulo, S.N. 2019. Amylose-free (“waxy”) wheat colonization by fusarium spp. and response to fusarium head blight. Plant Disease. 103(5):972-983. https://doi.org/10.1094/PDIS-05-18-0726-RE.Field response of near-isogenic brown midrib sorghum lines to Fusarium thapsinum and effects of controlled water deficit on stalk rot disease

- (Abstract Only)Funnell-Harris, D.L., Oneill, P.M., Sattler, S.E. 2018. Field response of near-isogenic brown midrib sorghum lines to Fusarium thapsinum and effects of controlled water deficit on stalk rot disease. International Congress of Plant Pathology Abstracts and Proceedings. [abstract].In: Proceedings of International Congress of Plant Pathology, International Society for Plant Pathology/American Phytopathology Society, July 29-August 30, 2018, Boston, MA.Field response of near-isogenic brown midrib sorghum lines
to fusarium stalk rot, and response of wildtype lines to
controlled water deficit
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Oneill, P.M., Sattler, S.E. 2018. Field response of near-isogenic brown midrib sorghum lines to fusarium stalk rot, and response of wildtype lines to controlled water deficit. Plant Pathology. 67:1474-1482. https://doi.org/10.1111/ppa.12863.Resistance to stalk pathogens for bioenergy sorghum

- (Abstract Only)Funnell-Harris, D.L., Oneill, P.M., Sattler, S.E., Khasin, M., Scully, E.D. 2018. Resistance to stalk pathogens for bioenergy sorghum. Meeting Abstract. [abstract]. In: Proceedings of 2018 Genomic Sciences Program Annual Principal Investigator (PI) Metting, U.S. Department of Energy, February 25-28,2018 Tysons, Virginia.Differences in fusarium species in brown midrib sorghum and in air populations in production fields
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Scully, E.D., Sattler, S.E., French, R.C., ONeill, P.M., Pedersen, J.F. 2017. Differences in fusarium species in brown midrib sorghum and in air populations in production fields. Phytopathology. 107(11):1353-1363. https://doi.org/10.1094/PHYTO-08-16-3016-R.Response of sorghum stalk pathogens to brown midrib plants and soluble phenolic extracts from near isogenic lines
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., O'Neill, P.M., Sattler, S.E., Gries, T.L., Berhow, M.A., Pedersen, J.F. 2017. Response of sorghum stalk pathogens to brown midrib plants and soluble phenolic extracts from near isogenic lines. European Journal of Plant Pathology. 148(4):941-953. doi:10.1007/s10658-017-1148-2.Response of sweet sorghum lines to stalk pathogens fusarium thapsinum and macrophomina phaseolina

- (Abstract Only)Funnell-Harris, D.L., Oneill, P.M., Sattler, S.E. 2016. Response of sweet sorghum lines to stalk pathogens fusarium thapsinum and macrophomina phaseolina. American Phytopathological Society Annual Meeting. [abstract] American Phytopathological Society.Response of sweet sorghum lines to stalk pathogens Fusarium thapsinum and Macrophomina phaseolina
                                                        

- (Peer Reviewed Journal)Funnell-Harris, D.L., Oneill, P.M., Sattler, S.E., Yerka, M.K. 2016. Response of sweet sorghum lines to stalk pathogens Fusarium thapsinum and Macrophomina phaseolina. Plant Disease. 100:896-903.Effect of waxy (low amylose) on fungal infection of sorghum grain
                                                        

- (Abstract Only)Funnell-Harris, D.L., Sattler, S.E., Oneill, P.M., Eskridge, K.M. 2015. Effect of waxy (low amylose) on fungal infection of sorghum grain. American Phytopathological Society Annual Meeting. 76-0.Effect of waxy (low amylose) on fungal infection of sorghum grain

- (Peer Reviewed Journal)Funnell-Harris, D.L., Sattler, S.E., O'neill, P.M., Eskridge, K.M., Pedersen, J.F. 2015. Effect of waxy (low amylose) on fungal infection of sorghum grain. Phytopathology 105: 786-796. DOI: 10.1094/PHYTO-09-14-0255-R.USE OF CHLOROPHYLL FLUORESCENCE ASSESSMENTS TO DIFFERENTIATE CORN HYBRID RESPONSE TO VARIABLE WATER CONDITIONS

- (Peer Reviewed Journal)Oneill, P.M., Shanahan, J.F., Schepers, J.S. 2006. Use of chlorophyll fluorescence assessments to differentiate corn hybrid response to variable water conditions. Crop Science 46:681-687.AGRONOMIC RESPONSES OF CORN HYBRIDS FROM DIFFERENT ERAS TO DEFICIT AND ADEQUATE LEVELS OF WATER AND NITROGEN

- (Peer Reviewed Journal)Oneill, P.M., Shanahan, J.F., Schepers, J.S., Caldwell, R. 2004. Agronomic responses of corn hybrids from different eras to deficit and adequate levels of water and nitrogen. Agronomy Journal 96:1660-1667.CHLOROPHYLL FLUORESCENCE ANALYSIS OF MAIZE UNDER DROUGHT AND NITROGEN STRESS CONDITIONS

- (Abstract Only)Duraes, F., Shanahan, J.F., Russell, W.K., Oneill, P.M., Magalhaes, P.C., Oliveira, A.C. 2003. Chlorophyll fluorescence analysis of maize under drought and nitrogen stress conditions. Agronomy Abstracts. #457971. CDROMUSE OF CHLOROPHYLL FLUORESCENCE TO CHARACTERIZE WATER AND N STRESS RESPONSE IN MAIZE HYBRIDS

- (Abstract Only)Oneill, P.M., Shanahan, J.F., Caldwell, R.M. 2003. Use of chlorophyll fluorescence to characterize water and n stress response in maize hybrids. Agronomy Abstracts. #675817


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