Dr. Gautam Sarath

Gautam's picture
Research Molecular Biologist, USDA-ARS-GFBRU , Adjuct Faculty
Grain, Forage and Bioenergy Research Unit
251 Filley Hall, East Campus, UNL
Lincoln, NE 68583-0937
Phone: (402) 472-4204
Fax: (402) 472-4020
E-Mail: Gautam.Sarath@ars.usda.gov


100% Research


  1. BSc (Honors) Botany, Delhi University, Delhi India, 1974
  2. MSc Botany, Delhi University, Delhi, India, 1976
  3. PhD Plant physiology and Biochemistry, University of California-Davis, 1984


Professional Responsibilities and Activities:
USDA-ARS research molecular biologist studying warm-season prairie grasses at the genetic, physiological, biochemical and molecular levels for improving germplasm with enhanced biomass and forage qualities, and biotic resistance. Involved in collaborative research with Drs. Tiffany Heng-Moss and Joe Louis.



6 book chapters and over 120 published abstracts.
Refereed Manuscripts (95)

Publications last four years:

Sattler SE, Palmer NA, Saballos A, Foster T, Xin Z, Sarath G, Vermerris W, Pedersen JF (2012) Identification and Characterization of 4 Missense Mutations in Brown midrib 12 (Bmr12); the Caffeic O-methyltranferase (COMT) of Sorghum. Bioenergy Research 5: 855-865.
Dowd PJ, Sarath G, Mitchell RB, Saathoff AJ, Vogel KP (2012) Retention of insect resistance in some switchgrass lines with reduced lignin levels. Genet Resour Crop Evol 60: 975-984.
Saathoff AJ, Hass E, Tobias CM, Twigg P, Sattler SE, Sarath G (2012) Switchgrass PviCAD1: Understanding residues important for substrate preferences and activity. Appl Biochem Biotechnol 168: 1086-1100.
Young HA, Sarath G, Tobias CM (2012) Karyotype variation is indicative of subgenomic and ecotypic differentiation in switchgrass. BMC Plant Biology 12: 117.
Bowman MJ, Dien BS, O’Bryan PJ, Sarath G, Cotta MA (2012) Comparative analysis of end point enzymatic digests of arabino-xylan isolated from switchgrass (Panicum virgatum L.) of varying maturities using LC-MSn . Metabolites 2: 959-982. Log. No. 286240
Mitchell RB, Vogel KP, Sarath G (2012) Predicting field establishment of perennial grass feedstocks: Progress made and challenges ahead. Biofuels 3: 653-656.
Tatineni S, Sarath G, Siefers D, French R (2013) Immunodetection of triticum mosaic virus using antibodies produced against bacterially expressed coat protein: potential for high-throughput diagnostic method. J Virol Meth 189: 196-203.
Vogel KP, Mitchell RB, Sarath G, Jung, HJ, Dien BS, Casler MD (2013) Switchgrass biomass composition altered by six generations of divergent breeding for digestibility. Crop Sci 53: 853-862.
Kovacs FA, Sarath G, Woodworth K, Twigg P, Tobias CM (2013) Abolishing activity against ascorbate in a cytosolic ascorbate peroxidase from switchgrass. Phytochemistry 94: 45-52.
Dien BS, O’Byran PJ, Hector R, Iten LB, Mitchell RB, Sarath G, Vogel KP, Cotta MA (2013) Conversion of switchgrass to ethanol using dilute ammonium hydroxide pretreatment: Influence of ecotype and harvest maturity. Environmental Technology13-14: 1837-1848.
Trabucco GM, Matos DA, Lee SJ, Saathoff AJ, Priest HD, Mockler TC, Sarath G, Hazen SP (2013) Functional characterization of cinnamyl alcohol dehydrogenase and caffeic acid O-methyltransferase in Brachypodium distachyon. BMC Biotechnology 13: 61.
Saathoff AJ, Donze T, Palmer NA, Bradshaw J, Heng-Moss T, Twigg P, Tobias CM, Lagrimini M, Sarath G (2013) Towards uncovering the roles of switchgrass peroxidases in plant processes. Frontiers Plant Science 4: 202.
Koch KG, Fithian R, Heng-Moss T, Bradshaw J, Sarath G, Spilker C (2014) Evaluation of tetraploid switchgrass populations (Panicum virgatum L.) for host suitability and differential resistance to four cereal aphids. J Econ Entomol 107: 424-431.
Sarath G, Baird LM, Mitchell RB (2014) Senescence, dormancy and tillering in perennial C4 grasses. Invited review. Plant Science 217-218: 140-151.
Vogel KP, Mitchell RB, Sarath G, Casler MD (2014) Registration of 'Liberty' switchgrass. Journal of Plant Registrations 8: 242-247.
Vogel KP, Sarath G, Mitchell RB (2014) Micromesh fabric pollination bags for switchgrass. Crop science 54: 1621-1623.
Palmer NA, Saathoff AJ, Waters B, Donze T, Heng-Moss T, Twigg P, Tobias CM, Sarath G (2014) Global changes in mineral transporters in tetraploid switchgrasses (Panicum virgatum L.). Frontiers in Plant Science 4:549.
Koch KG, Heng-Moss T, Bradshaw J, Sarath G (2014) Categories of resistance to greenbug and yellow sugarcane aphid (homoptera: aphididae) in three tetraploid switchgrass populations. Bioenergy Research 7: 909-918.
Amaradasa BS, Donze T, Heng-Moss T, Sarath G, and Amundsen K (2014) Characterizing differential gene expression in polyploid grasses lacking a reference transcriptome. OA Biotechnology Jan 10;3:1.
Heng-Moss T, Bradshaw J, Koch KG, Prochaska TJ, Donze-Reiner T, Sarath G (2014) Grow them and we will come to feast –a viewpoint. BioFPR 8: 145-146.
Palmer NA, Donze-Reiner T, Horvath D, Heng-Moss T, Waters B, Tobias CM, Sarath G (2015). Switchgrass (Panicum virgatum L) flag leaf transcriptomes reveal molecular signatures of leaf development, senescence, and mineral dynamics. Functional & Integrative Genomics 15: 1-16.
Palmer NA*, Saathoff AJ*, Twigg P, Tobias CM, Vogel KP, Madhavan S, Sarath G (2014) Contrasting metabolism in perenniating structures of upland and lowland switchgrass plants late in the growing season. Plos One 9: e105138.
Koch KG, Palmer NA, Stamm M, Heng-Moss T, Bradshaw JD, Blankenship E, Baird LM, Sarath G (2015) Characterization of greenbug feeding behavior and aphid (Hemiptera: Aphididae) host preference in relation to resistant and susceptible tetraploid switchgrass populations. Bioenergy Research 8: 165-174.
Saathoff AJ, Soundararajan M, Vogel KP, Tobias CM, Twigg P, Sarath G (2014) A new simple method for labeling field crops with stable isotope tracers. Australian Journal of Crop Science 8: 1625-1631.
Arredondo-Peter R, Moran J, Sarath G (2014) Rice (Oryza) hemoglobins. 1000Research 2014, 3:253 (doi: 10.12688/f1000research.5530.2).
Prochaska TJ, Donze-Reiner T, Palmer NA, Heng-Moss T, Hunt TE, Sarath G (2015) Transcriptional responses of tolerant and susceptible soybeans to feeding by the soybean aphid, (Aphis glycines Matsumura). Arthropod-Plant Interaction 9: 347-359.
Ramm C, Wachholtz M, Amundsen K, Donze-Reiner T, Heng-Moss T, Twigg P, Palmer NA, 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: 1354-1362.
Ramm C, Wayadande A, Baird L, Nandakumar R, Madayiputhiya N, Amundsen K, Baxendale F, Sarath G, Heng-Moss T (2015) Morphology and proteome characterization of the salivary glands of the Western chinch bug Blissus occiduus (Hemiptera: Blissidae). Journal of Economic Entomology. Published online June 10, 2015. DOI: http://dx.doi.org/10.1093/jee/tov149.
Rinerson CI, Scully ED, Palmer NA, Donze-Reiner T, Rabara RC, Tripathi P, Shen QJ, Rohilla J, Sattler SE, Sarath G, Rushton PJ (2015) The WRKY transcription factor family and senescence in switchgrass. BMC Genomics 16: 912. doi: 10.1186/s12864-015-2057-4.
Schmitz AJ, Begcy K, Sarath G, Walia H (2015) Rice Ovate Family Protein 2 (OFP2) alters genes associated with hormonal homeostasis and vasculature development. Plant Science DOI: http://dx.doi.org/doi:10.1016/j.plantsci.2015.10.011.
Scully ED, Gries TL, Sarath G, Palmer NA, Sattler SE, Baird L, Serapiglia M, Dien BS, Boateng AA, Funnell-Harris D, Twigg P, Clemente TE (2016) Overexpression of SbMyb60 impacts phenylpropanoid biosynthesis and alters secondary cell wall composition in Sorghum bicolor. Plant Journal. accepted.
Anderson WF, Sarath G, Edme SJ, Casler MD, Mitchell RB, Tobias CM, Hale AL, Sattler SE, Knoll JE (2016) Dedicated herbaceous biomass feedstock genetics and development. Bioenergy Research. Accepted.

Breaking Entomological News...

  • Insect Science major Earl Agpawa (conducting undergraduate research with Joe Louis and Eileen Hebets) was named the 2020 winner of the ESA’s Plant-Insect Ecosystems Undergraduate Student Achievement Award.This is a national award that recognizes outstanding accomplishments in entomology by an undergraduate student working with insect-plant interactions. Congratulations, Earl!
  • PhD student Sajjan Grover (mentored by Joe Louis) was named the 2020 winner of the ESA’s Plant-Insect Ecosystems Kenneth and Barbara Starks Plant Resistance to Insects Graduate Student Award. This is a national award recognizing a graduate student for outstanding work in the area of host plant resistance. Congratulations, Sajjan!
  • Dr. Joe Louis receives a grant to study resistance in sorghum to fall armyworm
  • Check out the Emerald Ash Borer Resource Center, and our Emerald Ash Borer Look-Alike Insects Sheet - Be Sure Before You Treat!