Results 11 to 20 of about 1,473 (169)
226 Serotonin stimulates relaxation in ovine saphenous vein precontracted with ergovaline [PDF]
J Anim SciAbstract The predominant ergot alkaloid found in wild type endophyte-infected tall fescue grass is ergovaline. Ergovaline is a potent vasoconstrictor in livestock that consume it. Previous research has shown that ergovaline can bind serotonin (5-HT) receptors and blood vessels exposed to ergovaline become unresponsive to subsequent 5-HT ...
Klotz, James L +2 more
europepmc +2 more sources
Risks for animal health related to the presence of ergot alkaloids in feed [PDF]
EFSA JournalThe European Commission requested EFSA to provide an update of the 2012 Scientific Opinion of the Panel on Contaminants in the Food Chain (CONTAM) on the risks for animal health related to the presence of ergot alkaloids (EAs) in feed.
EFSA Panel on Contaminants in the Food Chain (CONTAM) +23 more
doaj +2 more sources
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 +5 more
doaj +1 more source
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 +6 more
doaj +1 more source
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 +5 more
doaj +1 more source
Toxicokinetics of ergovaline in the horse after an intravenous administration [PDF]
Veterinary Research, 2001 The toxicokinetics of ergovaline (an ergopeptine mycotoxin present in some grasses infected with endophytic fungus of the genus Neotyphodium) were studied after intravenous administration of a single dose of 15 microg/kg bwt in four gelding horses. Plasma ergovaline concentrations were measured by high performance liquid chromatography, and the kinetic
Bony, Sylvie +3 more
openaire +5 more sources
A Complex Ergovaline Gene Cluster in Epichloë Endophytes of Grasses [PDF]
Applied and Environmental Microbiology, 2007 ABSTRACT Clavicipitaceous fungal endophytes of the genera Epichloë and Neotyphodium form symbioses with grasses of the subfamily Pooideae, in which they can synthesize an array of bioprotective alkaloids. Some strains produce the ergopeptine alkaloid ergovaline, which is implicated
Damien J, Fleetwood +4 more
openaire +2 more sources
Ergovaline, an endophytic alkaloid. 1. Animal physiology and metabolism [PDF]
Animal Production Science, 2016 Ergovaline is an ergot alkaloid found in some endophyte-infected ryegrasses and it has been implicated in the expression of ergotism-like symptoms of grazing livestock, as well as in the protection of the plant against invertebrate predation and abiotic stresses. These selection pressures have resulted in a conflict between the needs of the pasture for
J. L. Klotz, A. M. Nicol
openaire +1 more source
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 +5 more
doaj +1 more source
An integrated targeted and untargeted approach for the analysis of ergot alkaloids in cereals using UHPLC - hybrid quadrupole time-of-flight mass spectrometry [PDF]
, 2015 An ultra-high performance liquid chromatography hybrid quadrupole time of flight (Q-TOF) mass spectrometry (MS) method is described for the simultaneous quantitative determination of common ergot alkaloids and the screening, detection and identification ...
Arroyo Manzanares, Natalia +5 more
core +2 more sources