Results 31 to 40 of about 13,902 (176)

Ergot Alkaloids Produced by Endophytic Fungi of the Genus Epichloë

Toxins, 2015
The development of fungal endophytes of the genus Epichloë in grasses results in the production of different groups of alkaloids, whose mechanism and biological spectrum of toxicity can differ considerably.
Philippe Guerre
doaj   +1 more source

Metabolomics of fescue toxicosis in grazing beef steers [PDF]

Food and Chemical Toxicology, 2017
Fescue toxicosis (FT) results from consumption of tall fescue (Lolium arundinaceum) infected with an endophyte (Epichloë coenophiala) that produces ergot alkaloids (EA), which are considered key etiological agents of FT. Decreased weight gains, hormonal imbalance, circulating cholesterol disruption, and decreased volatile fatty acid absorption suggest ...
Ryan S, Mote, Nicholas S, Hill, Karan, Uppal, ViLinh T, Tran, Dean P, Jones, Nikolay M, Filipov   +5 more
openaire   +2 more sources

Warming reduces tall fescue abundance but stimulates toxic alkaloid concentrations in transition zone pastures of the U.S.

Frontiers in Chemistry, 2014
Tall fescue pastures cover extensive acreage in the eastern half of the United States and contribute to important ecosystem services, including the provisioning of forage for grazing livestock.
Rebecca Lynne Mcculley, Lowell P Bush, Anna Elizabeth Carlisle, Huihua eJi, Jim A. Nelson   +4 more
doaj   +1 more source

Behavioral and Physiological Alterations in Angus Steers Grazing Endophyte-Infected Toxic Fescue during Late Fall

Toxins, 2023
Fescue toxicosis is caused by grazing ergot alkaloid-producing endophyte (Epichloë coenophiala)-infected tall fescue (E+). Summer grazing of E+ leads to decreased productivity, associated impaired thermoregulation, and altered behavior.
Ignacio M. Llada, Jeferson M. Lourenco, Mikayla M. Dycus, Jessica M. Carpenter, Garret Suen, Nicholas S. Hill, Nikolay M. Filipov   +6 more
doaj   +1 more source

Rumen and Serum Metabolomes in Response to Endophyte-Infected Tall Fescue Seed and Isoflavone Supplementation in Beef Steers

Toxins, 2020
Fescue toxicosis impacts beef cattle production via reductions in weight gain and muscle development. Isoflavone supplementation has displayed potential for mitigating these effects.
Taylor B. Ault-Seay, Emily A. Melchior-Tiffany, Brooke A. Clemmons, Juan F. Cordero, Gary E. Bates, Michael D. Flythe, James L. Klotz, Huihua Ji, Jack P. Goodman, Kyle J. McLean, Phillip R. Myer   +10 more
doaj   +1 more source

Asexual Epichloë Fungi—Obligate Mutualists

Encyclopedia, 2021
Asexual Epichloë are obligate fungal mutualists that form symbiosis with many temperate grass species, providing several advantages to the host. These advantages include protection against vertebrate and invertebrate herbivores (i.e., grazing livestock ...
John R. Caradus, Stuart D. Card, Katrin G. Hewitt, David E. Hume, Linda J. Johnson   +4 more
doaj   +1 more source

Effect of Quebracho Tannin (Schinopsis quebracho-colorado (Schltdl.) F.A. Barkley and T. Meyer) on Silage Nutritive Value, Ergovaline Concentration, and Fermentation Parameters of Tall Fescue (Schedonorus arundinaceus (Shreb.) Dumort) with Two Dry-Matter Levels

Agronomy, 2023
Tall fescue (Schedonorus arundinaceus (Shreb.) Dumort) is a cool-season forage grown in the mid-south United States of America that has the potential for spring silage. Ergovaline produced by the fungal endophyte Neotyphodium coenophialum is preserved in
Ally J. Grote, Christine C. Nieman, Ivan R. Thomas Jr., Kenneth P. Coffey, James P. Muir, James L. Klotz   +5 more
doaj   +1 more source

The effects of steroid implant and dietary soybean hulls on estrogenic activity of sera of steers grazing toxic endophyte-infected tall fescue pasture

Frontiers in Veterinary Science, 2015
Soybean hulls (SBHs) have been fed to cattle pasturing on endophyte-infected tall fescue in attempts to increase rate of gain. Literature reports indicated some symptoms associated with fescue toxicosis were ameliorated by the use of steroidal implants ...
Nancy W. Shappell, Michael D. Flythe, Glen Eris Aiken   +2 more
doaj   +1 more source

Fescue Toxicosis [PDF]

, 2014
Tall fescue [Lolium arundinaceum (Schreb.) Darbysh.] is a cool-season, perennial grass frequently infected with the fungal endophyte Neotyphodium coenophialum.
Gaskill, Cynthia, Smith, S. Ray, Arnold, Michelle   +2 more
core   +1 more source

Vasoconstrictive Responses by the Carotid and Auricular Arteries in goats to Ergot Alkaloid Exposure

Frontiers in Chemistry, 2014
A fungal endophyte (Neotyphodium coenophialum) infects most plants of ‘Kentucky 31’ tall fescue (Lolium arundinaceum) and produces ergot alkaloids that cause persistent constriction of the vascular system in grazing livestock.
Glen Eris Aiken, Michael F. Flythe
doaj   +1 more source