Global ETD Search
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Showing 1 to 20 of 98 for “"Endophyte"”.
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Grazing Behavior of Beef Steers Grazing Endophyte-Infected, Endophyte-Free, and Novel Endophyte Infected Tall Fescue, and Lakota Prairie Grass
Endophyte infected Tall fescue (Festuca arundinacea Schreb.) is the most dominant grass used for pasture in the Southeastern U.S. As a result, fescue toxicosis is a major concern. Producers need alternative forages for grazing cattle that do not have this negative aspect. The objective of this …
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Consumption of Endophyte Infected Fescue During Gestation in Beef Cows
… is attributed to the presence of a fungal endophyte. Unfortunately, this endophyte also adversely affects cattle production. Cows consuming the ergot alkaloids produced by these endophytes can exhibit decreased feed intake, growth performance, organ vasoconstriction, and increased rectal …
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Fungicide and fertilizer-mediated changes in prairie plant-foliar fungal endophyte interactions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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The influence of intraspecific variation in host plants on arthropod and fungal endophyte communities
… microbial interactions for shaping fungal endophyte communities in spotted locoweed (Astragalus lentiginosus). Finally, in Chapter Four, I return to alfalfa to ask which plant traits affect the diversity of arthropods and foliar fungi at small spatial scales. Each chapter provides evidence …
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An investigation into the anthelmintic properties of seed extracts from endophyte containing pasture grasses
… properties of extracts from seeds containing the endophytes AR1, AR37, wild type in perennial rye grass (RG), and the loline producing endophytes namely Meadow Fescue (MF and U2) and Tall Fescue (TF and AR542) with Nil endophytes rye grass (Nil RG) and Nil endophytes tall fescue (Nil TF) used as …
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Composition and nutrient utilization by sheep of ensiled tall fescue with different levels of endophyte infection
Low and high endophyte infected stockpiled tall fescue was harvested, chopped and ensiled in 210 liter metal drums, double lined with polyethylene bags. Endophyte infection averaged 4 and 70%, respectively, for the low- and high-endophyte fescue. A metabolism trial was conducted with 24 wethers fed …
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Comparison of techniques for estimating pasture herbage mass and productive ground cover for Lakota prairie grass, Kentucky 31 endophyte free tall fescue, Kentucky 31 endophyte infected tall fescue and Quantum 542 tall fescue grazed by stocker steers
… grass (Bromus catharticus Vahl.), "Kentucky 31" endophyte-infected (KY31 E+), endophyte-free (KY31 E-), and "Quantum" tall fescue (non toxic endophyte infected) under grazing by stocker steers. Forage botanical composition and yield were determined by clipping three 0.25-m2 areas per treatment …
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Seasonal Variation in Swainsonine and Endophyte Concentrations of Undifilum oxytropis in Different Plant Parts of Oxytropis sericea
… disease caused by swainsonine. The fungal-endophyte Undifilum oxytropis, found in locoweed plant species of Astragalus and Oxytropis spp., is thought to be responsible for the synthesis of swainsonine. It has been shown that the swainsonine alkaloid and fungal endophyte are not uniformly …
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Resistance to African black beetle (Heteronychus arator) in perennial ryegrass (Lolium perenne L.) infected with AR1 endophyte
… C. W. Bacon & Schardl, stat. nov. et comb. nov. endophyte-perennial ryegrass (Lolium perenne L.) associations which do not cause toxicity to livestock and with strong resistance to African black beetle (H. arator), would be of significant value to farmers in regions where this pest is a problem. …
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Influence of endophyte infection of tall fescue with and without white clover on performance, intake, and bite size in steers during the grazing season and subsequent performance in the feedlot
… were conducted to investigate effects of endophyte (Acremonium coenophialum Morgan-Jones and Gams) infection of tall fescue (Festuca arundinacea Schreb.) on grazing cattle and subsequent feedlot performance, serum minerals and prolactin, intake, digestibility, bite size, and biting rate. …
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Bioremediation of Trichloroethylene: Analysis of the Plant Gene Response to TCE and Characterization of a Novel TCE-Degrading Endophyte
… manipulation. The second study hypothesized that endophytes in poplar can degrade TCE more effectively than those currently used in bioremediation. Plants associate with various microbes which live around the plant's root or intercellular spaces of the aerial part of the plant. The research was …
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Assessing the Social Acceptability of Endophyte-Assisted Phytoremediation of Polycyclic Aromatic Hydrocarbons: A Case Study at Gas Works Park
… contaminants from soil, sediment, and water. Endophytes can be added to plants to help improve phytoremediation capabilities and decrease phytotoxicity. Endophyte-assisted phytoremediation using willow shrubs is an alternative remediation strategy that could greatly improve soil quality and …
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The effects of endophytic Fusarium verticillioides on the interactions of maize and its fungal pathogen Ustilago maydis.
… organisms, including mycorrhizal fungi, endophytes and pathogens inhabit plants, interact with each other, and affect their fitness. Although theoretical studies suggest that the outcomes of multispecies interactions are often different from those of pairwise interactions, most empirical …
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Aspects of the root ecology of Neotyphodium endophytes in Lolium perenne
… in perennial ryegrass were compared with endophyte-free ryegrass (Nil) for their effects on root herbivory, soil biota, root growth, root morphology and alkaloid and nutrient content in pot trials. Ryegrass infected with the endophyte strain, AR37, which produces janthitrem alkaloids, was …
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Physiological and immune responses to endophyte-infected tall fescue exposure in beef heifers: impacts on performance, metabolism, and immune cell transcriptomics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Impact of grazing stockpiled tall fescue of lactating beef cows
… grazed stockpiled tall fescue at three different endophyte infection levels (20, 51, and 89%) and four forage allowances (2.25, 3.00, 3.75, and 4.50% of BW). A hay feeding treatment was included as a standard for comparison. Each experiment was a randomized complete block design. Average daily …
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Effect of Alternative Management Practices and the Fungal Endophyte (Epichloë festucae var. lolii) on Improving the Longevity of Perennial Ryegrass (Lolium perenne L.) in Minnesota
… project studied the effect of the fungal endophyte Epichloë festucae var. lolii on the freezing tolerance of a wide array of perennial ryegrass germplasm. Our results showed no direct effect of endophyte on freezing tolerance of perennial ryegrass; however, there was consistent association …
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Effects of coastal dynamics on colonization of Louisiana wetland plants by fungal endophytes
… the effects of stress and disturbance on fungal endophyte diversity and composition in obligate wetland plants in southeast Louisiana. I explored two types of endophytes: root and foliar. Each of these groups is known to live within apparently healthy host plants without causing symptoms of …
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