Results 31 to 40 of about 497 (146)

Do plant secondary metabolite‐containing forages influence soil processes in pasture systems?

open access: yesAgronomy Journal, Volume 112, Issue 5, Page 3744-3757, September/October 2020., 2020
Abstract Grazed pastures are susceptible to N loss from urine/manure additions, which increases eutrophication, affecting the global N cycle. Plant secondary metabolites (PSM), such as condensed tannins (CT) and terpenes, influence silviculture soil dynamics by generally decreasing N mineralization. We investigated whether cattle‐grazed pastures of non‐
Andrea K. Clemensen   +5 more
wiley   +1 more source

Cases of ergotism in livestock and associated ergot alkaloid concentrations in feed

open access: yesFrontiers in Chemistry, 2015
Ergot-induced disease was known long before Biblical times and has been the root cause for countless human epidemics spanning from the early fourteenth century to the late sixteenth century.
A. Morrie Craig   +2 more
doaj   +1 more source

Insect oviposition preference between Epichloë‐symbiotic and Epichloë‐free grasses does not necessarily reflect larval performance

open access: yesEcology and Evolution, Volume 10, Issue 14, Page 7242-7249, July 2020., 2020
In this study, we addressed the question how insect oviposition preference reflects larval performance in a satyrine butterfly when the host plant harbors a fungal endophyte. Against predictions, we found no clear association between oviposition preference and larval performance.
Miika Laihonen   +3 more
wiley   +1 more source

Analysis of Ergot Alkaloids

open access: yesToxins, 2015
The principles and application of established and newer methods for the quantitative and semi-quantitative determination of ergot alkaloids in food, feed, plant materials and animal tissues are reviewed.
Colin Crews
doaj   +1 more source

A Simple LC–MS Method for the Quantitation of Alkaloids in Endophyte-Infected Perennial Ryegrass

open access: yesToxins, 2019
The rapid identification and quantitation of alkaloids produced by Epichloë endophyte-infected pasture grass is important for the agricultural industry.
Simone Vassiliadis   +5 more
doaj   +1 more source

Ergot Alkaloids Produced by Endophytic Fungi of the Genus Epichloë

open access: yesToxins, 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

Epichloë Endophyte Infection Rates and Alkaloid Content in Commercially Available Grass Seed Mixtures in Europe

open access: yesMicroorganisms, 2020
Fungal endophytes of the genus Epichloë live symbiotically in cool season grass species and can produce alkaloids toxic to insects and vertebrates, yet reports of intoxication of grazing animals have been rare in Europe in contrast to overseas.
Jochen Krauss   +5 more
doaj   +1 more source

Perennial Ryegrass Alkaloids Increase Respiration Rate and Decrease Plasma Prolactin in Merino Sheep under Both Thermoneutral and Mild Heat Conditions

open access: yesToxins, 2019
A study was undertaken to determine the effects of feeding two levels of perennial ryegrass alkaloids (nil vs. moderate) under two climatic conditions. Alkaloids were fed via endophyte-infected perennial ryegrass seed and hay.
Michelle L. E. Henry   +4 more
doaj   +1 more source

Bovine neuronal vesicular glutamate transporter activity is inhibited by ergovaline and other ergopeptines [PDF]

open access: yesJournal of Dairy Science, 2011
l-Glutamate (Glu) is a major excitatory neurotransmitter responsible for neurotransmission in the vertebrate central nervous system. Vesicular Glu transporters VGLUT1 and VGLUT2 concentrate (50mM) Glu [Michaelis constant (measuring affinity), or K(m),=1 to 4mM] into synaptic vesicles (SV) for subsequent release into the synaptic cleft of glutamatergic ...
Y, Xue   +4 more
openaire   +2 more sources

Exposure to Ergot Alkaloids During Gestation Reduces Fetal Growth in Sheep

open access: yesFrontiers in Chemistry, 2014
Tall fescue [Lolium arundinaceum (Schreb.) Darbysh; Schedonorus phoenix (Scop.) Holub] is the primary cool season perennial grass in the eastern U.S. Most tall fescue contains an endophyte (Neotyphodium coenophialum), which produces ergot alkaloids that ...
Susan Kay Duckett   +2 more
doaj   +1 more source

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