Results 1 to 10 of about 948 (186)

Using On-Farm Monitoring of Ergovaline and Tall Fescue Composition for Horse Pasture Management [PDF]

Toxins, 2021
Central Kentucky horse pastures contain significant populations of tall fescue (Schedonorus arundinacea (Schreb.) Dumort) infected with an endophyte (Epichloë coenophialum (Morgan-Jones and Gams) Bacon and Schardl) known to produce several ergot ...
S Ray Smith
exaly   +7 more sources

Ergovaline Stability in Tall Fescue Based on Sample Handling and Storage Methods [PDF]

Frontiers in Chemistry, 2014
Ergovaline is an ergot alkaloid produced by the endophyte Neotyphodium coenophialum (Morgan-Jones and Gams) found in tall fescue (Schedonorus arundinacea (Schreb.) Dumort.) and blamed for a multitude of livestock disorders.
S Ray Smith
exaly   +7 more sources

Influence of Prolonged Serotonin and Ergovaline Pre-Exposure on Vasoconstriction Ex Vivo [PDF]

Toxins, 2021
Ergot alkaloid mycotoxins interfere in many functions associated with serotonergic neurotransmitters. Therefore, the objective was to evaluate whether the association of serotonin (5-hydroxytryptamine, 5-HT) and ergot alkaloids during a 24 h pre ...
Eriton E. L. Valente, David L. Harmon, James L. Klotz   +2 more
doaj   +3 more sources

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   +2 more sources

Genetic Manipulation of the Ergot Alkaloid Pathway in Epichloë festucae var. lolii and Its Effect on Black Beetle Feeding Deterrence

Toxins, 2021
Epichloë endophytes are filamentous fungi (family Clavicipitaceae) that live in symbiotic associations with grasses in the sub family Poöideae. In New Zealand, E. festucae var.
Debbie Hudson, Wade Mace, Alison Popay, Joanne Jensen, Catherine McKenzie, Catherine Cameron, Richard Johnson   +6 more
doaj   +2 more sources

Tall fescue seed extraction and partial purification of ergot alkaloids [PDF]

Frontiers in Chemistry, 2014
Many substances in the tall fescue/endophyte association (Schedonorus arundinaceus/Epichloë coenophiala) have biological activity. Of these compounds only the ergot alkaloids are known to have significant mammalian toxicity and the predominant ergot ...
Lowell eBush
doaj   +3 more sources

Plant interactions and ergovaline concentration in mixture of Lotus tenuis and Schedonorus arundinaceus infected with the fungus Epichloë coenophiala

Ecología Austral, 2020
Schedonorus arundinaceus (tall fescue) population can be infected by the endophyte fungus Epichloë coenophiala, responsible of livestock intoxication due to fungal alkaloids (i.e., ergovaline).
Lucas R. Petigrosso, Matías García, Osvaldo Vignolio, Adriana Salvat, Diego Cristos, Jorge Castaño   +5 more
doaj   +1 more source

The Known Antimammalian and Insecticidal Alkaloids Are Not Responsible for the Antifungal Activity of Epichloë Endophytes

Plants, 2021
Asexual Epichloë sp. endophytes in association with pasture grasses produce agronomically important alkaloids (e.g., lolitrem B, epoxy-janthitrems, ergovaline, peramine, and lolines) that exhibit toxicity to grazing mammals and/or insect pests.
Krishni Fernando, Priyanka Reddy, Simone Vassiliadis, German C. Spangenberg, Simone J. Rochfort, Kathryn M. Guthridge   +5 more
doaj   +1 more source

Acute exposure to ergot alkaloids from endophyte-infected tall fescue does not alter absorptive or barrier function of the isolated bovine ruminal epithelium*

Animal, 2014
Ergot alkaloids in endophyte-infected (Neotyphodium coenophialum) tall fescue (Lolium arundinaceum) have been shown to cause a reduction in blood flow to the rumen epithelium as well as a decrease in volatile fatty acids (VFA) absorption from the washed ...
A.P. Foote, G.B. Penner, M.E. Walpole, J.L. Klotz, K.R. Brown, L.P. Bush, D.L. Harmon   +6 more
doaj   +1 more source

Isoflavone Containing Legumes Mitigate Ergot Alkaloid-Induced Vasoconstriction in Goats (Capra hircus)

Animals, 2022
Ergot alkaloids produced by a fungal endophyte that infects tall fescue (Lolium arundinaceum; (E+ TF) can induce constriction of the vasculature in ruminants, resulting in “fescue toxicosis”.
Brittany E. Harlow, Michael D. Flythe, Jack P. Goodman, Huihua Ji, Glen E. Aiken   +4 more
doaj   +1 more source