Results 41 to 50 of about 529 (159)

Ruminal motility, reticuloruminal fill, and eating patterns in steers exposed to ergovaline

Journal of Animal Science, 2019
Abstract Fescue toxicosis is problematic for growing steers, causing lower DMI and productivity when fed endophyte-infected (E+) tall fescue. A complete understanding of underlying mechanisms of how fescue toxicosis affects growing steers is lacking.
Gyuchul, Ahn, Kara, Ricconi, Suelen, Avila, James L, Klotz, David L, Harmon   +4 more
openaire   +3 more sources

Vasoactivity and Vasoconstriction Changes in Cattle Related to Time off Toxic Endophyte-Infected Tall Fescue

Toxins, 2016
Previous research has indicated that serotonergic and α-adrenergic receptors in peripheral vasculature are affected by exposure of cattle grazing toxic endophyte-infected (E+; Epichlöe coenophialia) tall fescue (Lolium arundinaceum).
James L. Klotz, Glen E. Aiken, Jessica R. Bussard, Andrew P. Foote, David L. Harmon, Ben M. Goff, F. Neal Schrick, James R. Strickland   +7 more
doaj   +1 more source

Effects of red clover isoflavones on tall fescue seed fermentation and microbial populations in vitro. [PDF]

PLoS ONE, 2018
Negative impacts of endophyte-infected Lolium arundinaceum (Darbyshire) (tall fescue) are responsible for over $2 billion in losses to livestock producers annually.
Emily A Melchior, Jason K Smith, Liesel G Schneider, J Travis Mulliniks, Gary E Bates, Zachary D McFarlane, Michael D Flythe, James L Klotz, Jack P Goodman, Huihua Ji, Phillip R Myer   +10 more
doaj   +1 more source

Is the endophyte‐based plant protection against aphids mediated by changes in the insect microbiome?

Insect Science, Volume 33, Issue 3, Page 1097-1108, June 2026.
We showed that the fungal endophyte Epichloë strain AR37 increased the plant resistance against aphids via the production of indole diterpene alkaloids. The reduction in aphid performance was not associated with changes in abundance/composition/diversity of the insect's bacterial microbiota, but additional endophyte effects on this microbiota cannot be
Daniel A. Bastías, Luis Carvalho, Ruy Jáuregui, Richard D. Johnson, Wei Zhang, Pedro E. Gundel   +5 more
wiley   +1 more source

Feeding Tall Fescue Seed during Mid and Late Gestation Influences Subsequent Postnatal Growth, Puberty, and Carcass Quality of Offspring

Animals, 2020
Weaned lambs (n = 82), born to ewes fed endophyte-free (E−) or endophyte-infected (E+; 1.77 mg hd−1 d−1 ergovaline + ergovalinine) tall fescue seed from d 35 to 85 of gestation (MID) and/or d 86 of gestation to parturition (LATE), were used to examine ...
Maslyn A. Greene, Jessica L. Britt, J. Keith Bertrand, James L. Klotz, William Bridges, John G. Andrae, Susan K. Duckett   +6 more
doaj   +1 more source

Monitoring and Managing of Ergot Alkaloids in Cereal Grains: A Comprehensive Analysis of Analytical Challenges, Sampling Uncertainty, and Processing for Food Safety

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT Ergot alkaloids (EAs), toxic secondary metabolites produced by Claviceps purpurea, pose food and feed safety concerns for cereal grains, particularly rye and wheat. While EAs are most frequently associated with rye, their occurrence in other cereals has been increasingly reported across diverse regions.
Chamali Kodikara, Nandika Bandara, Sheryl A. Tittlemier   +2 more
wiley   +1 more source

Variation in the expression of ergot alkaloids between individual tillers of perennial ryegrass

Frontiers in Chemistry, 2014
Epichloë fungal endophytes of cool season grasses are well known to produce a range of alkaloids of benefit to the host. Some of these compounds are advantageous to agriculture due to qualities that promote pasture persistence (e.g.
Wade Jeffray Mace, Kristy eLunn, Catherine eLloyd-West   +2 more
doaj   +1 more source

Effects of Epichloë festucae var. lolii on heavy metal stress tolerance of its perennial ryegrass host

Grassland Research, Volume 4, Issue 4, Page 332-340, December 2025.
The growth performance and physiology variations of perennial ryegrass with (E+) and without endophyte (E−) were evaluated after they were subjected to ZnCl2 and CdCl2 treatments. Abstract Background The endophyte Epichloë festucae var. lolii forms mutualistic symbiosis with perennial ryegrass, and their relationship under heavy metal stress needs to ...
Pei Tian, Guobin Wang, Bihua Ma, Meining Wang   +3 more
wiley   +1 more source

USING ALTERNATIVE REPRESENTATIONS OF THE RGB COLOR MODEL TO SEPARATE ERGOT SCLEROTIA (CLAVICEPS PURPUREA) FROM THE IMPORTED WHEAT [PDF]

Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2021
Sclerotium of ergot is hard fungal body which contain toxic alkaloids to human and livestock. These alkaloids include ergotamine, ergovaline, ergocornine, ergocryptine, and ergocristine.
Tarek FOUDA, Amina ALBEBANY
doaj  

Evaluating pasture forage plant breeding achievements: a review

New Zealand Journal of Agricultural Research, Volume 68, Issue 6, Page 1146-1220, December 2025.
ABSTRACT Forage plant breeding aims to deliver cultivars that increase on‐farm productivity through improved seasonal and annual yield, persistence of yield in perennials, and nutritive and feeding value. Breeding is generally undertaken in highly controlled field trials with individual plants or rows.
John R. Caradus, David F. Chapman
wiley   +1 more source