Results 11 to 20 of about 529 (159)
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 +2 more
doaj +3 more sources
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
Duration of ergovaline exposure influences serotonin-mediated vasoactivity of bovine mesenteric vasculature. [PDF]
J Anim Sci, 2023 Abstract Ergovaline (ERV), produced in toxic endophyte-infected tall fescue, causes potent vasoconstriction of bovine peripheral and visceral vasculature. Ergovaline acts as both an agonist and an antagonist in bovine gut blood vessels through serotonin (5-HT) receptors and it appears that the type of action could be influenced by the ...
Trotta RJ, Harmon DL, Ji H, Klotz JL.
europepmc +3 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 poisoning in a herd of dairy cows – a case report [PDF]
Medycyna Weterynaryjna, 2019 Endophytes are fungi of the genus Neotyphodium that live in symbiosis with grasses. The effects of this symbiosis can be both negative and positive. The negative effect may be due to alkaloids produced by endophytes that in higher concentrations are toxic to animals. The most common alkaloids produced by Neotyphodium fungi are ergovaline and lolitrem B.
JAN MARCZUK +6 more
openaire +1 more source
Functional Ecology, Volume 37, Issue 12, Page 3177-3192, December 2023., 2023 Read the free Plain Language Summary for this article on the Journal blog. Abstract Plants deploy diverse anti‐herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and Epichloë‐endophytes for physical and chemical (i.e. endophytic‐alkaloids) defence against insect herbivores.
X. Cibils‐Stewart +8 more
wiley +1 more source
Journal of the Royal Society of New Zealand, Volume 53, Issue 3, Page 259-303, June 2023., 2023 ABSTRACT The New Zealand economy is export‐driven and heavily reliant on the productivity of the pastoral sector. The transformation of native forest and tussock grassland ecologies to temperate grasslands occurred rapidly with the arrival of Europeans.
John R. Caradus +4 more
wiley +1 more source
Functional Ecology, Volume 37, Issue 6, Page 1567-1579, June 2023., 2023 Read the free Plain Language Summary for this article on the Journal blog. Abstract Many temperate grasses are both hyper‐accumulators of silicon (Si) and hosts of Epichloë fungal endophytes, functional traits which may alleviate environmental stresses such as herbivore attack.
Scott N. Johnson +6 more
wiley +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
Biological control of plant diseases – What has been achieved and what is the direction?
Plant Pathology, Volume 71, Issue 5, Page 1024-1047, June 2022., 2022 Biological control is coming of age and many products are commercially available. This review emphasizes the biology of the three‐way interactions involved and the long route to commercialization. Abstract The global sustainability agenda is increasing the demand for reduction in inputs into agricultural production while maintaining profitable yield of
David B. Collinge +5 more
wiley +1 more source