Dr. Paul Twigg

Dean of Arts and Sciences

Office: THMH Suite 108A   |    Phone: (308) 865-8881   |    Email: twiggp@unk.edu

Dr. Paul Twigg


Area of Interest:

  • Plant Molecular Biology


  • B.S. (1987) - Indiana University (Pennsylvania)
  • PhD. (1993) - University of Tennessee

Professional Affiliations:

  • Sigma Xi


  • Twigg, P. G.  1993.  Isolation of a nodule-specific cDNA encoding a putative glycine-rich protein from Alnus glutinosa.  Ph. D. Dissertation, University of Tennessee, Knoxville. 144 pp.


  • Pervaiz, Z., Contreras, J., Hupp, B., Lindenberger, J.H., Chen, D., Zhang, Q., Wang, C., Twigg, P., and Saleem, M.  2020.  Root microbiome changes with root branching order and root chemistry in peach rhizosphere soil.  Rhizospere  https://doi.org/10.1016/j.rhisph.2020.100249
  • Pingault, L., Palmer, N.A., Koch, K.G., Heng-Moss, T., Bradshaw, J.D., Seravelli, J., Twigg, P., Louis, J., & Sarath, G.  2020.  Differential defense responses of upland and lowland switchgrass cultivars to a cereal aphid pest.  Int. J. Mole. Sci.  https://www.mdpi.com/1422-0067/21/21/7966
  • Koch, K.G., Palmer, N.A., Donze-Reiner, T., Scully, E.D., Seravelli, J., Amundsen, K., Twigg, P., Louis, J., Bradshaw, D., Heng-Moss, T., & Sarath, G.  2020.  Aphid-responsive defense networks in hybrid switchgrass.  Frontiers in Plant Science  https://doi.org/10.3389/fpls.2020.01145
  • Zogli, P.K., Alvarez, S., Naldrett, M.J., Palmer, N.A., Kock, K.G., Pingault, L., Bradshaw, J.D., Twigg, P., Heng-Moss, T., Louis, J., & Sarath, G.  2020.  Greenbug (Schizaphis graminum) herbivory significantly impacts protein and phosphorylation abundance in switchgrass (Panicum virgatum).  NatureResearch Scientific Reports  10:14842.  https://doi.org/10.1038/s41598-020-71828-8
  • Saleem, M., Pervaiz, Z., Contreras, J., Lindeneberger, J., Hupp, B., Chen, D., Zhang, Q., Wang, C., Iqbal, J., & Twigg, P.  2020.  Cover crop diversity improves multiple soil properties via altering root architectural traits.  Rhizosphere  https://doi.org/10.1016/j.rhisph.2020.100248
  • Scully, E.D., Gries, T., Palmer, N. A., Sarath, G., Funnell-Harris, D. L., Baird, L., Twigg, P., Seravelli, J., Clemente, T. E., & Sattler, S.  2018.  Overexpression of SbMyb60 in Sorghum bicolor impacts both primary and secondary metabolism.  New Phytol. 217:82-104.
  • Palmer, N. A., Saathoff, A. J., Scully, E. D., Tobias, C. M., Twigg, P., Madhavan, S., Schmer, M., Cahoon, R., Sattler, S. E., Edme, S. J., Mitchell, R. B., & Sarath, G.  2017.  Seasonal below-ground metabolism in switchgrass.  The Plant J  92:1059-1075.
  • Wang, H., Zhang, C., Dou, Y., Yu, B., Liu, Y., Heng-Moss, T. M., Lu, G., Wachholtz, M., Bradshaw, J. D., Twigg, P., Scully, E., Palmer, N. & Sarath, G.  2017.  Insect and plant-derived miRNAs in greenbug (Schizaphis graminum) and yellow sugarcane aphid (Sipha flava) revealed by deep sequencing.  Gene  599:68-77
  • Donze-Reiner, T., Palmer, N. A., Scully, E. D., Prochaska, T. J., Koch, K. G., Heng-Moss, T., Bradshaw, J. D., Twigg, P., Amundsen, K., Sattler, S. E. & Sarath, G.  2017.  Transcriptional analysis of defense mechanisms in upland tetraploid switchgrass to greenbugs.  BMC Plant Biology 17:46.
  • Scully, E. D., Donze-Reiner, T., Wang, H., Eickhoff, T. E., Baxendale, F., Twigg, P., Kovacs, F., Heng-Moss, T., Sattler, S. E. & Sarath, G.  2016.  Identification of an orthologous clade of peroxidases that respond to feeding by greenbugs (Schizaphis graminum) in C4 grasses.  Functional Plant Biology   43(12):1134-1148.
  • Scully, E. D., Gries, T., Sarath, G., Palmer, N. A., Baird, L., Serapiglia, M. J., Dien, B. S., Boateng, A. A., Ge, Z., Funnell-Harris, D. L., Twigg, P., Clemente, T. E. & Sattler, S. E.  2016.  Overexpression of SbMyb60 impacts phenylpropanoid biosynthesis and alters secondary cell wall composition in Sorghum bicolor.  Plant Journal  85(3):378-395
  • Ramm, C., Wachholtz, M., Amundsen, K., Donze, T., Heng-Moss, T., Twigg, P., Palmer, N. A., Sarath, G. & Baxendale, F.  2015.  Transcriptional profiling of resistant and susceptible buffalograsses in response to Blissus occiduus (Hemiptera: Blissidae) feeding.   Journal of Economic Entomology  108(3):1354-1362.
  • Saathoff, A. J., Soundararajan, M., Vogel, K. P., Tobias, C. M., Twigg, P. & Sarath, G.  2014.   A new simple method for labeling field crops with stable isotope tracers.  Australian Journal of Crop Science  8(12):1625-1631.
  • Palmer, N.A., Saathoff, A. J., Tobias, C. M., Twigg, P., Xia, Y., Vogel, K. P., Madhavan, S., Sattler, S. E., and Sarath, G.  2014.  Contrasting metabolism in perenniating structures of upland and lowland switchgrass plants late in the growing season.  PLoS One 9(8):10.1371/journal.pone.0105138
  • Palmer, N.A., Saathoff, A. J., Waters, B. M., Donze, T., Heng-Moss, T., Twigg, P., Tobias, C. M., and Sarath, G.  2014.  Global changes in mineral transporters in tetraploid switchgrasses (Panicum virgatum).  Fron. In Pl. Sci.: Pl. Nutr. 4:1-12.
  • Donze, T., Qu, F., Twigg, P., and Morris, T. J.  2014.  Turnip crinle virus coat protein inhibits the basal immune response to virus invasion in Arabidopsis by binding to the NAC transcription factor TIP.  Virology 449:207-214.
  • Ramm, C., Saathoff, A., Donze, T., Heng-Moss, T., Baxendale, F., Twigg, P., Baird, L., and Amundsen, K.  2013.  Expression profiling of four defense-related buffalograss transcripts in response to chinch bug (Hemiptera: Blissidae) feeding.  J. Econ. Entomol. 106:2568-2576.
  • Kovacs, F.A., Sarath, G., Woodworth, K., Twigg, P., and Tobias, C. M.  2013.  Abolishing activity against ascorbate in a cytosolic ascorbate peroxidase from switchgrass.  Phytochemistry 94:45-52.
  • Wachholz, M., Heng-Moss, T., Twigg, P., Baird, L., Lu, G., and Amundsen, K.  2013.  Transcriptome analysis of two buffalograss cultivars.  BMC Genomics 14:613-625.
  • Saathoff, A.J., Donze, T., Palmer, N. A., Bradshaw, J., Heng-Moss, T., Twigg, P., Tobias, C. M., Lagrimini, M., and Sarath, G.  2013.  Towards uncovering the roles of switchgrass peroxidases in plant processes. Fron. In Pl. Sci.: Pl. Biotech. 4:1-12.
  • Saathoff, A.J., Hargrove, M. S., Haas, E. J., Tobias, C. M., Twigg, P., Sattler, S., and Sarath, G.  2012.  Switchgrass PviCAD1: understanding residues important for substrate preferences and activity.  Appl. Biochem. Biotechnol 168:1086-1100.
  • Palmer, N.A., Saathoff, A. J., Kim, J., Benson, A., Tobias, C. M., Twigg, P., Vogel, K. P., Madhavan, S., and Sarath, G.  2012.  Next-generation sequencing of crown and rhizome transcriptome from an upland, tetraploid switchgrass.  Bioenergy Research 5:649-661.
  • Babaian, C. and Twigg, P.  2011.  The power of plants: introducing ethnobotany & biophilia into your biology class.  The American Biology Teacher 73(4):217-221.
  • Saathoff, A. J., Tobias, C. M., Sattler, S. E., Haas, E. J., Twigg, P., and Sarath, G.  2011.  Switchgrass contains two cinnamyl alcohol dehydrogenases involved in lignin formation.  BioEnergy Research 4(2):120-133.
  • Gutsche, A., Heng-Moss, T., Sarath, G., Twigg, P., Xia, Y., Lu, G., and Mornhinweg, D.  2009.  Gene expression profiling of tolerant barley in response toDiuraphis noxia (Hemiptera: Aphididae) feeding.  Bulletin of Entomological Research 99:163-173.
  • Tobias, C.M., Sarath, G., Twigg, P., Lindquist, E., Pangilinan, J., Lazo, G., Penning, B., and Barry, K.  2008.  Comparative genomics in switchgrass using 61,585 high-quality expressed sequence tags.  Plant Genome 1:111-124.
  • Gopalasubramniam, S., Kovacs, F., Violanta-Mota, F., Twigg, P., Arredando-Peter, R., and Sarath, G.  2008.  Cloning and characterization of a caesalpinoid (Chamaecrista fasciculata)Proteins 72:252-260.
  • Vogel, J. P., Gu, Y. A., Twigg, P., Lazo, G. R., Laudencia-Chingcuanco, D., Hayden, D. M., Donze, T. J., Vivian, L. A., Stamova, B., and Coleman-Derr, D.  2006.  EST sequencing and phylogenetic analysis of the model grass Branchypodium distachyonTheoretical and Applied Genetics 113(2):186-195.
  • Tobias, C.M., Hayden, D. M., Twigg, P., and Sarath, G.  2006.  Genic microsatellite markers derived from EST sequences of switchgrass ( Panicum virgatumL.).  Mol. Ecol. Notes 6:185-187.
  • Tobias, C. M., Twigg, P., Hayden, D. M., Vogel, K. P., Mitchell, R. M., Lazo, G. R., Chow, E. K., and Sarath, G.  2005.  Analysis of expressed sequence tags and the identification of associated short tandem repeats in switchgrass.  Theoretical and Applied Genetics 111(5):956-964.
  • Simonson, R. L., and Twigg, P. G.  1999.  Cloning and sequencing of a glutamine synthetase cDNA (Accession No. AF169795) from Juglans nigra. (PGR99-144).  Plant Physiology 121:313.
  • Oh, B. S., Twigg, P. G., Hong, J. S., Mullin, B. C., and An, C. S.  1997.  nif V is contiguous to nif HDK in Frankia strain FaC1.  Physiologia Plantarum 99(4):707-713.
  • Pawlowski, K., Twigg, P. G., Dobrista, S. V., Guan, G.-H., and Mullin, B. C.  1997.  A nodule-specific gene family from Alnus glutinosa encodes glycine and histidine-rich proteins expressed in the early stages of actinorhizal nodule development.  Molecular Plant-Microbe Interactions 10:656-664.
  • Mullin, B. C., Goetting-Minesky, P., and Twigg, P.  1993.  Differential gene expression in the development of actinorhizal root nodules.  Current Plant Science and Biotechnology in Agriculture 17:309-314.
  • Mullin, B. C., Swensen, S. M., Twigg, P., and Goetting-Minesky, P.  1992.  Application of molecular analyses to questions relating to the genetics, ecology and evolution of actinorhizal symbioses. Pages 123-128 in Plant Biotechnology and Development (edited by P. M. Gresshoff). CRC Press, Boca Raton, Florida.
  • An, C. S., Twigg, P., Ligon, J. M., and Mullin, B. C.  1990.  nifH, D and K are contiguous in Frankia strain FaCl. Pages 324-xxx in Nitrogen Fixation: Achievements and Objectives (edited by P. M. Gresshoff, L. E. Roth, G. Stacey, & W. Newton.