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United States Department of Agriculture

Agricultural Research Service

Related Topics

Isabelle A Kagan
Forage-Animal Production Research
Plant Physiologist

Phone: (859) 257-2459
Fax: (859) 257-3334
Room N-220
1100 S. LIMESTONE-AGRICULTURAL SCIENCE BUILDING N.
UNIVERSITY OF KENTUCKY CAMPUS
LEXINGTON, KY, 40546

Projects
Optimizing the Biology of the Animal-Plant Interface for Improved Sustainability of Forage-Based Animal Enterprises
Appropriated (D)
  Accession Number: 423805
Sustainable Forage-Based Production for the Mid-South Transition Zone
Appropriated (D)
  Accession Number: 424287

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Inhibition of fructan-fermenting equine fecal bacteria and Streptococcus bovis by hops (Humulus lupulus L.) ß-acid - (Peer Reviewed Journal)
Harlow, B.E., Lawrence, L.M., Kagan, I., Flythe, M.D. 2014. Inhibition of fructan-fermenting equine fecal bacteria and Streptococcus bovis by hops (Humulus lupulus L.) ß-acid. Journal of Applied Microbiology. doi:10.1111/jam.12532.
Chromatographic profiles of nonstructural carbohydrates contributing to the colorimetrically determined fructan, ethanol-soluble, and water-soluble carbohydrate contents of five grasses - (Peer Reviewed Journal)
Kagan, I., Kirch, B.H., Thatcher, C.D., Teutsch, C.D., Pleasant, R. 2014. Chromatographic profiles of nonstructural carbohydrates contributing to the colorimetrically determined fructan, ethanol-soluble, and water-soluble carbohydrate contents of five grasses. Animal Feed Science And Technology. 188:53-63.
Thin-layer chromatographic (TLC) separations and bioassays of plant extracts to identify antimicrobial compounds - (Peer Reviewed Journal)
Kagan, I., Flythe, M.D. 2014. Thin-layer chromatographic (TLC) separations and bioassays of plant extracts to identify antimicrobial compounds. Journal of Visualized Experiments. (85), e51411, doi:10.3791/51411.
Factors affecting the separation and bioactivity of red clover (Trifolium pratense) extracts assayed against Clostridium sticklandii, a ruminal hyper ammonia-producing bacterium - (Peer Reviewed Journal)
Kagan, I., Flythe, M.D. 2012. Factors affecting the separation and bioactivity of red clover (Trifolium pratense) extracts assayed against Clostridium sticklandii, a ruminal hyper ammonia-producing bacterium. Natural Product Communications. 12:1557-1690.
Phenolic profiles of red clover (Trifolium pratense) selected for decreased postharvest browning - (Abstract Only)
Kagan, I. 2012. Phenolic profiles of red clover (Trifolium pratense) selected for decreased postharvest browning. American Society of Plant Biologists Annual Meeting. Abstract P02034. July 20-24, 2012. Austin, TX..
Steer and plant responses to chemical suppression of seedhead emergence in toxic endophyte-infected tall fescue - (Peer Reviewed Journal)
Aiken, G.E., Goff, B.M., Witt, W.W., Kagan, I., Sleugh, B.B., Burch, P., Schrick, F.N. 2012. Steer and plant responses to chemical suppression of seedhead emergence in toxic endophyte-infected tall fescue. Crop Science. 52:960-969.
Effects of pH, sample size, and solvent partitioning on recovery of soluble phenolic acids and isoflavonoids in red clover (Trifolium pratense cv. Kenland) - (Research Notes)
Kagan, I. 2011. Effects of pH, sample size, and solvent partitioning on recovery of soluble phenolic acids and isoflavonoids in red clover (Trifolium pratense cv. Kenland). Natural Product Communications. 6:1567-1660.
Seasonal and diurnal changes in starch content and sugar profiles of bermudagrass in the Piedmont region of the United States - (Peer Reviewed Journal)
Kagan, I., Kirch, B.H., Thatcher, C.D., Teutsch, C., Elvinger, F.C., Shepherd, D.M., Pleasant, R.S. 2011. Seasonal and diurnal changes in starch content and sugar profiles of bermudagrass in the Piedmont region of the United States. Journal of Equine Veterinary Science. 31(9):521-529.
Chemical suppression of seedhead emergence in toxic endophyte-infected tall fescue for improving cattle weight gain and physiology - (Proceedings)
Aiken, G.E., Witt, B.W., Goff, B.M., Kagan, I. 2011. Chemical suppression of seedhead emergence in toxic endophyte-infected tall fescue for improving cattle weight gain and physiology. American Forage and Grassland Conference Proceedings. CDROM.
Phytochemicals that modulate amino acid and peptide catabolism by caprine rumen microbes - (Abstract Only)
Flythe, M.D., Kagan, I., Gellin, G.L., Goff, B.M., Aiken, G.E., Cheeke, P.R. 2011. Phytochemicals that modulate amino acid and peptide catabolism by caprine rumen microbes. Conference on Gastrointestinal Function. p. 470.786.
Seasonal and diurnal variation in simple sugar and fructan composition of orchardgrass pasture and hay in the Piedmont region of the United States - (Peer Reviewed Journal)
Kagan, I., Kirch, B.H., Thatcher, C., Strickland, J.R., Teutsch, C.D., Elvinger, F.C., Pleasant, R.S. 2011. Seasonal and diurnal variation in simple sugar and fructan composition of orchardgrass pasture and hay in the Piedmont region of the United States. Journal of Equine Veterinary Science. 31:488-497.
A chromatographic survey of methods for extacting long-chain grass fructans - (Peer Reviewed Journal)
Kagan, I., Kirch, B.H., Strickland, J.R. 2011. A chromatographic survey of methods for extacting long-chain grass fructans. Grass and Forage Science. 66:434-448.
Chemical Suppression of Seedhead Emergence in Endohyte-Infested Tall Fescue for Improving Steer Weight Gain and Physiology - (Abstract Only) - (26-Apr-10)
Chaparral Herbicide Application for Suppression of Seedhead Emergence in Tall Fescue Pastures and Possible Alleviation of Fescue Toxicosis - (Proceedings)
Aiken, G.E., Witt, W.W., Kagan, I. 2010. Chaparral Herbicide Application for Suppression of Seedhead Emergence in Tall Fescue Pastures and Possible Alleviation of Fescue Toxicosis. American Forage and Grassland Conference Proceedings.
Antimicrobial Effects of Red Clover (Trifolium pratense) Phenolic Extract on the Ruminal Hyper Ammonia-producing Bacterium, Clostridium sticklandii SR - (Peer Reviewed Journal)
Flythe, M.D., Kagan, I. 2010. Antimicrobial Effects of Red Clover (Trifolium pratense) Phenolic Extract on the Ruminal Hyper Ammonia-producing Bacterium, Clostridium sticklandii SR. Curr Microbiol (2010) 61:125-131.
Profiling Sugars in Tall Fescue and Kentucky Bluegrass Extracts Assayed for Total Water- and Ethanol-Soluble Carbohydrates: Relationship of Chromatographic to Spectrophotometric Data - (Abstract Only)
Kagan, I. 2009. Profiling Sugars in Tall Fescue and Kentucky Bluegrass Extracts Assayed for Total Water- and Ethanol-Soluble Carbohydrates: Relationship of Chromatographic to Spectrophotometric Data. 63rd SPFCIC. pg 79.
Kentucky Report (Annual Report to SERA-IEG8 Tall Fescue Toxicosis/Endophyte Workshop) - (Other)
Kagan, I., Coe, B.L., Smith, L.L., Dougherty, C.T., Strickland, J.R., Aiken, G.E., Carter, J.M., Mcculley, R.L., Mcdowell, K.J., Witt, W.W., Bush, L.P., Williams, N.M., Williams, D.M., Donahue, J.M., Panaccione, D.G., Florea, S., Hesse, U., Roe, B.A., Farman, M.L., Jaromczyk, J.W., Arnaoudova, E., Moore, N., Beach, W., Andreeva, K., Schardl, C.L. 2008. Kentucky Report (Annual Report to SERA-IEG8 Tall Fescue Toxicosis/Endophyte Workshop). SERA-IEG 8. University of Kentucky report. pgs 45-53.
A validated method for gas chromatographic analysis of gamma-aminobutyric acid in tall fescue herbage - (Peer Reviewed Journal)
Kagan, I., Coe, B.L., Smith, L.L., Huo, C., Dougherty, C.T., Strickland, J.R. 2008. A validated method for gas chromatographic analysis of gamma-aminobutyric acid in tall fescue herbage. Journal of Agricultural and Food Chemistry. 56:5538-5543.
Genomic Approaches to Understanding Allelochemical Effects on Plants - (Book / Chapter)
Duke, S.O., Baerson, S.R., Pan, Z., Kagan, I., Sanchez-Moreiras, A., Reigosa, M.J., Pedrol, N., Schulz, M. Genomic Approaches to Understanding Allelochemical Effects on Plants. In "Allelopathy in Sustainable Agriculture and Forestry", eds. R.S. Zeng, A.U. Mallik, and S.M. Luo, Springer, New York, NY, pp. 157-167.
Profiles of Nonstructural Carbohydrates, as a Function of Species and Extraction Method, in Four Cool-Season Forage Grasses - (Abstract Only)
Kagan, I., Kirch, B.H., Strickland, J.R. 2008. Profiles of Nonstructural Carbohydrates, as a Function of Species and Extraction Method, in Four Cool-Season Forage Grasses. Society for Range Management Meeting Abstracts. Published on Compact Disc and distributed at meeting. Abstract #2314. http://srm.confex.com/srm/2008/techprogram/P2314.HTM
A Functional Genomics Investigation of Allelochemical Biosynthesis in Sorghum Bicolor Root Hairs Reprint Icon - (Peer Reviewed Journal)
Baerson, S.R., Dayan, F.E., Rimando, A.M., Nanayakkara, N., Liu, C., Schroder, J., Fishbein, M., Pan, Z., Kagan, I., Pratt, L.H., Cordonnier-Pratt, M., Duke, S.O. 2007. A Functional Genomics Investigation of Allelochemical Biosynthesis in Sorghum Bicolor Root Hairs. Journal of Biological Chemistry. 283(6):3231-3247.
Increased (ALPHA)-tocopherol content in soybean seed overexpressing the Perilla frutescens (GAMMA)-tocopherol methyltransferase gene - (Peer Reviewed Journal)
Tavva, V.S., Kim, Y., Kagan, I., Dinkins, R.D., Kim, K., Collins, G.B. 2006. Increased (ALPHA)-tocopherol content in soybean seed overexpressing the Perilla frutescens (GAMMA)-tocopherol methyltransferase gene. Plant Cell Reports. 26:61-70.
Seed-Specific Expression of the Perilla Frutescens Gamma-Tocopherol Methyltransferase Gene in Soybean Results in Increase Alph-Tocopherol Content - (Abstract Only)
Tavva, V.S., Yul-Hoa, K., Kagan, I., Dinkins, R.D. 2006. Seed-specific expression of the perilla frutescens gamma-tocopherol methyltransferase gene in soybean results in increase alph-tocopherol content. Biennial Conference on Molecular and Cellular Biology of the Soybean. Aug 5-8, 2006.
Genomic Approaches to Understanding Allelochemical Modes of Action and Defenses Against Allelochemicals - (Proceedings)
Duke, S.O., Baerson, S.R., Pan, Z., Kagan, I., Sanchez-Moreiras, A., Reigosa, M.J., Pedrol-Bonjoch, N., Schulz, M. 2005. Genomic Approaches to Understanding Allelochemical Modes of Action and Defenses Against Allelochemicals. Harper, J.D.I., An, M., Wu, H., Kent, J.H., Editors. Charles Sturts University, Wagga Wagga, Australia. Proceedings of the 4th World Congress on Allelopathy. P. 107-113.
Detoxification and Transcriptome Response in Arabidopsis Seedlings Exposed to the Allelochemical Benzoxazolin-2(3h)-One (Boa) - (Peer Reviewed Journal)
Baerson, S.R., Sanchez-Moreiras, A., Pedrol-Bonjoch, N., Schulz, M., Kagan, I., Agarwal, A.K., Reigosa, M.J., Duke, S.O. 2005. Detoxification and transcriptome response in arabidopsis seedlings exposed to the allelochemical benzoxazolin-2(3h)-one (boa). Journal of Biological Chemistry. 280(23): 21867-21881.
Gene Transcription Profiles of Saccharomyces Cerevisiae after Treatment with Plant Protection Fungicides That Inhibit Ergosterol Biosynthesis - (Peer Reviewed Journal)
Kagan, I., Michel, A., Prause, A., Scheffler, B.E., Pace, P., Duke, S.O. 2005. Gene transcription profiles of saccharomyces cerevisiae after treatment with plant protection fungicides that inhibit ergosterol biosynthesis. Journal of Pesticide Biochemistry and Physiology. 82(2):133-153.
Global Gene Expression Approaches to Mode-of-Action Studies with Natural Product-Based Pesticides - (Book / Chapter)
Kagan, I., Michel, A., Scheffler, B.E., Prause, A., Baerson, S.R., Duke, S.O. Global gene expression approaches to mode-of-action studies with natural product-based pesticides. Rimando, A.M., Duke, S.O., editors. American Chemical Society, Washington, DC. Natural Products for Pest Management. 2006. pp. 255-264.
New Herbicide Target Sites From Natural Compounds - (Book / Chapter)
Duke, S.O., Dayan, F.E., Kagan, I., Baerson, S.R. 2005. New Herbicide Target Sites From Natural Compounds. American Chemical Society Symposium Series. 892:151-160.
Chemical Basis for Weed Suppressive Activity of Sorghum - (Book / Chapter)
Rimando, A.M., Kagan, I., Dayan, F.E., Czarnota, M.A., Weston, L.A. 2005. Chemical Basis for Weed Suppressive Activity of Sorghum. In: American Chemical Society Symposium Series: Semiochemicals in Pest and Weed Control. Petroski, R.J., Tellez, M.R. and Behle, R.W., Editors. Washington, DC. American Chemical Society. 906:59-70.
Forage-Animal Production Research Unit: Establishment of a New USDA-ARS Research Location - (Proceedings)
Strickland, J.R., Aiken, G.E., Kagan, I., Dinkins, R.D. 2005. Forage-animal production research unit: establishment of a new usda-ars research location. International Grasslands Congress. F.P. O'Mara et al (ed). P. 794. Wageningen Academic Publishers.
Chromatographic Separation and in Vitro Activity of Sorgoleone Congeners from the Roots of Sorghum Bicolor - (Peer Reviewed Journal)
KAGAN, I., RIMANDO, A.M., DAYAN, F.E. CHROMATOGRAPHIC SEPARATION AND IN VITRO ACTIVITY OF SORGOLEONE CONGENERS FROM THE ROOTS OF SORGHUM BICOLOR. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. 2003. V. 51(26). P. 7589-7595.
Elucidation of the Biosynthetic Pathway of the Allelochemical Sorgoleone Using Retrobiosynthetic NMR Analysis - (Peer Reviewed Journal)
Dayan, F.E., Kagan, I., Rimando, A.M. 2003. Elucidation of the Biosynthetic Pathway of the Allelochemical Sorgoleone Using Retrobiosynthetic NMR Analysis. Journal of Biological Chemistry. 278(31):28607-28611.
ARS News Articles
Last Modified: 7/30/2014
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