Projects

VALUE-ADDED PRODUCTS FROM FORAGES AND BIOMASS ENERGY CROPS Appropriated (D)   Accession Number: 408533

OPPORTUNITIES & LIMITS TO PERTURBING FORAGE PLANT BIOCHEMISTRY, GROWTH, & DEVELOPMENT FOR IMPROVING FORAGE NUTRITIONAL BENEFITS IN DAIRY SYS Appropriated (D)   Accession Number: 412700

NOVEL TECHNOLOGIES FOR FIELD FRACTIONATION, HARVESTING AND STORAGE OF PERENNIAL BIOENERGY CROPS Specific Cooperative Agreement (S)   Accession Number: 414306

POST-APPROVAL STUDY: EFFECT OF RUMENSIN ON RUMINAL MICROBIAL PROFILES IN LACTATING DAIRY CATTLE UNDER CONDITIONS OF MILK FAT DEPRESSION Trust (T)   Accession Number: 411544

Publications

EFFECT OF MONENSIN FEEDING AND WITHDRAWAL ON POPULATIONS OF INDIVIDUAL BACTERIAL SPECIES IN THE RUMEN OF LACTATING DAIRY COWS FED HIGH-STARCH RATIONS - (Peer Reviewed Journal)

Weimer, P.J., Stevenson, D.M., Mertens, D.R., Thomas, E.E. 2008. Effect of monensin feeding and withdrawal on populations of individual bacterial species in the rumen of lactating dairy cows fed high-starch rations. Applied Microbiology and Biotechnology. 80(1):135-145.

Response of thermochemical and biochemical conversion processes to lignin concentration in alfalfa stems - (Peer Reviewed Journal)

Boateng, A.A., Weimer, P.J., Jung, H.G., Lamb, J.F. 2008. Response of thermochemical and biochemical conversion processes to lignin concentration in alfalfa stems. Energy and Fuels. 22:2810-2815.

Plant species composition and biofuel yields of conservation grasslands - (Abstract)

Adler, P.R., Sanderson, M.A., Weimer, P.J., Vogel, K.P. 2008. Plant species composition and biofuel yields of conservation grasslands. Ecological Society of America Abstracts. p.1

FACTORS AFFECTING ACTIVITY OF CELLULOLYTIC MICROBES IN THE RUMEN - (Abstract)

Weimer, P.J. 2008. Factors affecting activity of cellulolytic microbes in the rumen [abstract]. Journal of Dairy Science E-Supplement 1. 91:115.

BACTERIAL POPULATION SHIFTS IN THE RUMEN OF LACTATING DAIRY COWS WITHIN AND ACROSS FEEDING CYCLES - (Abstract)

Welkie, D.M., Stevenson, D.M., Weimer, P.J. 2008. Bacterial population shifts in the rumen of lactating dairy cows within and across feeding cycles [abstract]. Journal of Dairy Science E-Supplement 1. 91:336.

A NOVEL PRETREATMENT (DIETHYL OXALATE) RELEASING FERMENTABLE SUGARS AND USEFUL FIBERS FROM LIGNOCELLULOSE - (Abstract) - (02-May-07)

EFFECT OF MONENSIN FEEDING AND WITHDRAWAL ON RUMINAL POPULATIONS OF INDIVIDUAL BACTERIAL SPECIES IN COWS FED HIGH-STARCH DIETS - (Abstract)

Weimer, P.J., Stevenson, D.M., Mertens, D.R., Thomas, E.E. 2007. Effect of monensin feeding and withdrawal on ruminal populations of individual bacterial species in cows fed high-starch diets [abstract]. Journal of Dairy Science 90(Supplement 1):175.

Bio-based adhesives from residues of consolidated bioprocessing of cellulosic substrates - (Abstract)

Weimer, P.J., Frihart, C.R., Lorenz, L.F., Kenealy, W.R. 2007. Bio-based adhesives from residues of consolidated bioprocessing of cellulosic substrates [abstract]. Abstracts of 29th Symposium on Biotechnology for Fuels and Chemicals, Society for Industrial Microbiology, April 29-May 2, 2007, Denver, Colorado. p. 72.

ON-FARM PRETREATMENT TECHNOLOGIES FOR IMPROVING ENZYMATIC DIGESTIBILITY OF CELLULOSE AND HEMICELLULOSE PRESENT IN PERENNIAL GRASS AND CORN STOVER - (Abstract)

Digman, M.F., Shinners, K.J., Dien, B.S., Muck, R.E., Weimer, P.J. 2007. On-farm pretreatment technologies for improving enzymatic digestibility of cellulose and hemicellulose present in perennial grass and corn stover [abstract]. Abstracts of the 29th Symposium on Biotechnology for Fuels and Chemicals, April 29-May 2, 2007, Denver, Colorado. p. 147.

SUCROSE CONCENTRATION ALTERS FERMENTATION KINETICS, PRODUCTS AND CARBON FATES IN IN VITRO FERMENTATIONS WITH MIXED RUMINAL MICROBES - (Peer Reviewed Journal)

Hall, M., Weimer, P.J. 2007. Sucrose concentration alters fermentation kinetics, products and carbon fates in in vitro fermentations with mixed ruminal microbes. Journal of Animal Science. 85:1467-1478.

ON-FARM PRETREATMENT TECHNOLOGIES FOR IMPROVING ENZYMATIC DIGESTIBILITY OF CELLULOSE AND HEMICELLULOSE PRESENT IN PERENNIAL GRASS - (Proceedings/Symposium)

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.

SINGLE-PASS, SPLIT-STREAM HARVEST OF CORN GRAIN AND STOVER - (Peer Reviewed Journal)

Shinners, K.J., Adsit, G.S., Binversie, B.N., Digman, M.F., Muck, R.E., Weimer, P.J. 2007. Single-pass, split-stream harvest of corn grain and stover. Transactions of the ASABE. 50:353-363.

DOMINANCE OF PREVOTELLA AND LOW ABUNDANCE OF CLASSICAL RUMINAL BACTERIAL SPECIES IN THE BOVINE RUMEN REVEALED BY RELATIVE QUANTIFICATION REAL-TIME PCR - (Peer Reviewed Journal)

Stevenson, D.M., Weimer, P.J. 2007. Dominance of Prevotella and low abundance of classical ruminal bacterial species in the bovine rumen revealed by relative quantification real-time PCR. Applied Microbiology and Biotechnology. 75:165-174.

FORAGE ENERGY CROPS AS FEEDSTOCKS FOR PRODUCTION OF FUEL ETHANOL - (Abstract)

Cotta, M.A., Dien, B.S., Iten, L.B., Jung, H.G., Lamb, J.F., Vogel, K.P., Mitchell, R., Sarath, G., Casler, M.D., Weimer, P.J. 2006. Forage energy crops as feedstocks for production of fuel ethanol [abstract]. Biocatalysis and Bioenergy. p. 21.

ETHANOL AND CO-PRODUCTS FROM CELLULOSIC BIOMASS - (Trade Journal)

Weimer, P.J. 2006. Ethanol and co-products from cellulosic biomass. International Sugar Journal. 108:30-32.

STUDIES OF THE EXTRACELLULAR GLYCOCALYX OF THE ANAEROBIC RUMINAL BACTERIUM RUMINOCOCCUS ALBUS 7. - (Peer Reviewed Journal)

Weimer, P.J., Price, N.P., Kroukamp, O., Joubert, L.M., Wolfaardt, G.M., Van Zyl, W.H. 2006. Studies of the extracellular glycocalyx of the anaerobic ruminal bacterium Ruminococcus albus 7. Applied and Environmental Microbiology. 72(12):7559-7566.

SINGLE-PASS, SPLIT-STREAM OF CORN GRAIN AND STOVER: CHARACTERISTIC PERFORMANCE OF THREE HARVESTER CONFIGURATIONS. - (Proceedings/Symposium)

Shinners, K.J., Boettcher, G.C., Munk, J.C., Digman, M.F., Muck, R.E., Weimer, P.J. 2006. Single-pass, split-stream of corn grain and stover: characteristic performance of three harvester configurations. Proceedings of the Annual Meeting of the American Society of Agricultural and Biological Engineers International. Paper No. 061015. p. 1-19.

DRYING, HARVESTING AND STORAGE CHARACTERISTICS OF PERENNIAL GRASSES AS BIOMASS FEEDSTOCKS - (Proceedings/Symposium)

Shinners, K.J., Boettcher, G.C., Muck, R.E., Weimer, P.J., Casler, M.D. 2006. Drying, harvesting and storage characteristics of perennial grasses as biomass feedstocks. Proceedings of the Annual Meeting of the American Society of Agricultural and Biological Engineers International. Paper No. 061012. p. 1-19.

COMPARISON OF WET AND DRY CORN STOVER HARVEST AND STORAGE - (Peer Reviewed Journal)

Shinners, K.J., Binversie, B.N., Muck, R.E., Weimer, P.J. 2007. Comparison of wet and dry corn stover harvest and storage. Biomass and Bioenergy. 31:211-221.

BIOMASS YIELD AND BIOFUEL QUALITY OF SWITCHGRASS HARVESTED IN FALL OR SPRING - (Peer Reviewed Journal)

Adler, P.R., Sanderson, M.A., Boateng, A.A., Weimer, P.J., Jung, H.G. 2006. Biomass yield and biofuel quality of switchgrass harvested in fall or spring. Agronomy Journal. 98:1518-1525.

FERMENTABILITY OF EASTERN GAMAGRASS, BIG BLUESTEM AND SAND BLUESTEM GROWN ACROSS A WIDE VARIETY OF ENVIRONMENTS - (Peer Reviewed Journal)

Weimer, P.J., Springer, T.L. 2007. Fermentability of eastern gamagrass, big bluestem and sand bluestem grown across a wide variety of environments. Bioresource Technology. 98:1615-1621.

CELLULOSE HYDROLYSIS BY CLOSTRIDIUM THERMOCELLUM: A MICROBIAL PERSPECTIVE - (Book/Chapter)

Lynd, L.R., Weimer, P.J., Wolfaardt, G.M., Zhang, Y.P. 2007. Cellulose hydrolysis by Clostridium thermocellum: A microbial perspective. In: Kataeva, I.A., editor. Cellulosome: Molecular Anatomy and Physiology of Proteinaceous Machines. Hauppage, NY:Nova Science Publishers. p. 95-117.

IMPLICATIONS OF A CARBON BALANCE STUDY: ORGANIC ACID AND PROTEIN SUPPLIES CHANGE WITH FERMENTABLE CARBOHYDRATE:PROTEIN RATIO - (Abstract)

Hall, M., Weimer, P.J. 2006. Implications of a carbon balance study: organic acid and protein supplies change with fermentable carbohydrate:protein ratio [abstract]. Journal of Dairy Science. 89:Suppl 1:404.

DEVELOPMENT OF FORAGE CROPS AS FEEDSTOCKS FOR PRODUCTION OF FUEL ETHANOL - (Abstract)

Cotta, M.A., Dien, B.S., Jung, H.G., Vogel, K.P., Casler, M.D., Lamb, J.F., Weimer, P.J., Iten, L.B., Mitchell, R., Sarath, G. 2006. Development of forage crops as feedstocks for production of fuel ethanol [abstract]. International Conference on Bioenergy. p. I-5.

LETTER TO THE EDITOR: CORRECTIONS TO BIOFILM ARTICLE - (Other)

Hall, M., Weimer, P.J. 2006. Ruminating on films. American Scientist. 94:100.

INTERACTIONS BETWEEN EUPHORBIA ESULA TOXINS AND BOVINE RUMINAL MICROBES - (Peer Reviewed Journal)

Kronberg, S.L., Halaweish, F.T., Hubert, M.B., Weimer, P.J. 2006. Interactions between euphorbia esula toxins and bovine ruminal microbes. Journal of Chemical Ecology. 32(1):15-28.

USE OF REAL TIME POLYMERASE CHAIN REACTION TO DETERMINE POPULATION PROFILES OF INDIVIDUAL SPECIES OF LACTIC ACID BACTERIA IN ALFALFA SILAGE AND STORED CORN STOVER - (Peer Reviewed Journal)

Stevenson, D., Muck, R.E., Shinners, K., Weimer, P.J. 2006. Use of real time polymerase chain reaction to determine population profiles of individual species of lactic acid bacteria in alfalfa silage and stored corn stover. Applied Microbiology and Biotechnology. 71(3):329-338.

CHARACTERISTIC PERFORMANCE AND YIELDS USING A SINGLE-PASS, SPLIT-STREAM MAIZE AND STOVER HARVESTER - (Proceedings/Symposium)

Shinners, K.J., Adsit, G.S., Binversie, B.N., Digman, M.F., Muck, R.E., Weimer, P.J. 2005. Characteristic performance and yields using a single-pass, split-stream maize and stover harvester. Proceedings of the Annual Meeting of the American Society for Agricultural Engineering. Paper No. 056051, p.1-22.

EXPRESSION OF SEVENTEEN GENES IN CLOSTRIDIUM THERMOCELLUM ATCC 27405 DURING FERMENTATION OF CELLULOSE OR CELLOBIOSE IN CONTINUOUS CULTURE - (Peer Reviewed Journal)

Stevenson, D., Weimer, P.J. 2005. Expression of seventeen genes in clostridium thermocellum ATCC 27405 during fermentation of cellulose or cellobiose in continuous culture. Applied and Environmental Microbiology. 71(8):4672-4678.

IN VITRO GAS PRODUCTION AND BACTERIAL BIOMASS ESTIMATION OF LUCERNE SILAGE INOCULATED WITH ONE OF THREE LACTIC ACID BACTERIAL INOCULANTS - (Abstract)

Contreras-Govea, F.E., Muck, R.E., Filya, I., Mertens, D.R., Weimer, P.J. 2005. In vitro gas production and bacterial biomass estimation for lucerne silage inoculated with one of three lactic acid bacterial inoculants. In: Park, R.S., Stronge, M.D., editors. Silage production and utilisation, XIVth International Silage Conference, July 3-6, 2005, Belfast, Northern Ireland. p. 207.

CULTIVATION OF MESOPHILIC SOIL CRENARCHAEOTES IN ENRICHMENTS FROM PLANT ROOTS - (Peer Reviewed Journal)

Simon, H.M., Jahn, C.E., Bergerud, L.T., Sliwinski, M.K., Weimer, P.J., Willis, D.K. Goodman, R.M. 2005. Cultivation of mesophilic soil crenarchaeotes in enrichments from plant roots. Applied and Environmental Microbiology 71(8):4751-4760.

HARVEST MANAGEMENT OF SWITCHGRASS IN PENNSYLVANIA FOR YIELD AND BIOFUEL QUALITY - (Proceedings/Symposium)

Adler, P.R., Sanderson, M.A., Boateng, A.A., Weimer, P.J. 2004. Harvest management of switchgrass in Pennsylvania for yield and biofuel quality. In: Barnes, T. G., Kiesel, L. R., editors. Proceedings of the Fourth Eastern Native Grass Symposium, October 3-6, 2004, Lexington, Kentucky. p. 87-95.

IN VITRO GAS PRODUCTION AS A SURROGATE MEASUREMENT OF THE FERMENTABILITY OF CELLULOSIC BIOMASS - (Peer Reviewed Journal)

Weimer, P.J., Dien, B.S., Springer, T.L., Vogel, K.P. 2005. In vitro gas production as a surrogate measurement of the fermentability of cellulosic biomass. Applied Microbiology Biotechnology. 67:52-58.

DEGRADATION OF ALFALFA STEM CELL WALLS BY FIVE RUMEN BACTERIAL SPECIES - (Peer Reviewed Journal)

Jung, H.G., Engels, F.M., Weimer, P.J. 2004. Degradation of lucerne stem cell walls by five rumen bacterial species. Netherlands Journal of Agricultural Science. 52:11-28.

PHYLOGENETIC DIVERSITY AND GROWTH DYNAMICS OF MESOPHILIC SOIL CRENARCHAEOTA IN ENRICHMENT CULTURE STUDIES - (Abstract)

Simon, H., Jahn, C., Sliwinski, M., Weimer, P.J., Goodman, R. 2004. Phylogenetic diversity and growth dynamics of mesophilic soil crenarchaeota in enrichment culture studies[abstract]. Microbial Ecology International Symposium. p. 16.

ALFALFA: HAY, HAYLAGE, BALEAGE AND OTHER NOVEL PRODUCTS - (Proceedings/Symposium)

Martin, N.P., Mertens, D.R., Weimer, P.J. 2004. Alfalfa: hay, haylage, baleage and other novel products. In: Proceedings of the Idaho Alfalfa and Forage Conference, February 24-25, 2004, Twin Falls, Idaho. p. 9-18.

ALBUSIN B, A BACTERIOCIN FROM THE RUMINAL BACTERIUM RUMINOCOCCUS ALBUS 7 THAT INHIBITS THE GROWTH OF RUMINOCOCCUS FLAVEFACIENS - (Peer Reviewed Journal)

Chen, J., Stevenson, D.M., Weimer, P.J. 2004. Albusin B, a bacteriocin from the ruminal bacterium Ruminococcus albus 7 that inhibits the growth of ruminococcus flavefaciens. Applied and Environmental Microbiology. 70(5):3167-3170.

LACTIC ACID BACTERIA USED IN INOCULANTS FOR SILAGE AS PROBIOTICS FOR RUMINANTS - (Peer Reviewed Journal)

Weinberg, Z.G., Muck, R.E., Weimer, P.J., Chen, Y., Gamburg, M. 2004. Lactic acid bacteria used in inoculants for silage as probiotics for ruminants. Applied Biochemistry and Biotechnology. 118:1-10.

FERMENTATION RESIDUES FROM RUMINOCOCCUS CELLULOSE FERMENTATIONS AS COMPONENTS OF WOOD ADHESIVE FORMULATIONS - (Peer Reviewed Journal)

Weimer, P.J., Conner, A.H., Lorenz, L.F. 2003. Fermentation residues from ruminococcus cellulose fermentations as components of wood adhesive formulations. Applied Microbiology and Biotechnology. 63:29-34.

CHARACTERIZATION OF THE GLYCOCALYX OF CELLULOSE-GROWN RUMINOCOCCUS ALBUS - (Abstract)

Weimer, P.J., Kroukamp, O., Joubert, L.M., Wolfaardt, G.M., Van Zyl, W.H. 2004. Characterization of the glycocalyx of cellulose-grown ruminococcus albus. [abstract]. 104th General Meeting of the American Society for Microbiology. B-428.

DEGRADATION OF ALFALFA CELL WALL POLYSACCHARIDES BY PURE CULTURES OF FIVE RUMEN BACTERIAL SPECIES - (Abstract)

JUNG, H.G., WEIMER, P.J., ENGELS, F.M. DEGRADATION OF ALFALFA CELL WALL POLYSACCHARIDES BY PURE CULTURES OF FIVE RUMEN BACTERIAL SPECIES. CONFERENCE ON GASTROINTESTINAL FUNCTION. 2003. ABSTRACT P. 23.

CULTIVATION OF MESOPHILIC SOIL CRENARCHAEOTA IN ENRICHMENTS FROM TOMATO ROOTS - (Abstract)

Jahn, C.E., Simon, H.M., Bergerud, L.T., Weimer, P.J., Goodman, R.M. 2003. Cultivation of mesophilic soil crenarchaeota in enrichments from tomato roots. [abstract]. American Society for Microbiology Meeting. p. 446.

THE SURVIVAL OF SILAGE INOCULANT LACTIC ACID BACTERIA IN RUMEN FLUID - (Peer Reviewed Journal)

WEINBERG, Z.G., MUCK, R.E., WEIMER, P.J. THE SURVIVAL OF SILAGE INOCULANT LACTIC ACID BACTERIA IN RUMEN FLUID. JOURNAL OF APPLIED MICROBIOLOGY. 2003. v. 94. pp. 1066-1071.

USE OF PHOTOCATALYTIC REDUCTION TO HASTEN PREPARATION OF CULTURE MEDIA FOR SACCHAROLYTIC CLOSTRIDIUM SPECIES - (Peer Reviewed Journal)

Fukushima, R.S., Weimer, P.J., Kunz, D. 2003. Use of photocatalytic reduction to hasten preparation of culture media for saccharolytic clostridium species. Brazilian Journal of Microbiology. 34:22-26.

NUTRIENT YIELDS FROM IN VITRO FERMENTATIONS OF SUCROSE AND NEUTRAL DETERGENT FIBER BY MIXED RUMINAL MICROORGANISMS - (Abstract)

Hall, M.B., Weimer, P.J. 2002. Nutrient yields from in vitro fermentations of sucrose and neutral detergent fiber by mixed ruminal microorganisms [abstract]. Journal of Dairy Science. p. 183.

GAS PRODUCTION KINETICS AND FERMENTATION END PRODUCT FORMATION FROM NEUTRAL DETERGENT FIBER AND SUCROSE BY MIXED RUMINAL MICROORGANISMS IN VITRO - (Abstract)

Weimer, P.J., Hall, M.B. 2002. Gas production kinetics and fermentation end product formation from neutral detergent fiber and sucrose by mixed ruminal microorganisms in vitro [abstract]. Journal of Dairy Science. p. 361.

ISOLATION AND CHARACTERIZATION OF A TRICHODERMA STRAIN CAPABLE OF FERMENTING CELLULOSE TO ETHANOL - (Abstract)

Stevenson, D.M., Weimer, P.J. 2002. Isolation and characterization of a trichoderma strain capable of fermenting cellulose to ethanol [abstract].American Society for Microbiology Annual Meeting. p. 350.

GROWTH OF CLOSTRIDIUM SPECIES IN ANAEROBIC MEDIA REDUCED BY PHOTOCATALYTIC INTERACTION OF CYSTEINE AND RESAZURIN - (Abstract)

Fukushima, R.S., Weimer, P.J., Kunz, D.A. 2002. Growth of clostridium species in anaerobic media reduced by photocatalytic interaction of cysteine and resazurin [abstract]. American Society for Microbiology Annual Meeting. p. 260-261.

THE ROLE OF COMPETITION AND AMENSALISM IN DETERMINING RUMINAL FIBROLYTIC BACTERIAL POPULATIONS - (Abstract)

Weimer, P.J. 2002. The role of competition and amensalism in determining ruminal fibrolytic bacterial populations[abstract]. Joint Grasslands Society of South Africa. p. 1.

THE MICROBIAL CELLULOSE UTILIZATION PARADIGM: FUNDAMENTALS AND IMPLICATIONS FOR CONSOLIDATED BIOPROCESSING - (Abstract)

Lynd, L.R., Zhang, Y., Fan, Z., Desai, S., Tyurin, M., Lagrange, D., Gundllapalli, S., Otero, R.C., Van Zyl, W.H., Weimer, P.J. 2002. The microbial cellulose utilization paradigm: fundamentals and implications for consolidated bioprocessing [abstract]. Biotechnology for Fuels and Chemicals Symposium Proceedings. p. 11