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Influence Of Fungal Isolates Infecting Tall Fescue On Multitrophic Interactions, Tom Bultman, A Aguilera, T Sullivan
Influence Of Fungal Isolates Infecting Tall Fescue On Multitrophic Interactions, Tom Bultman, A Aguilera, T Sullivan
Thomas L. Bultman
The epichloae are ascomycetous fungi in the genera Epichloe and Neotyphodium that live within grasses. Some of these fungi produce alkaloids that can help protect the host from herbivores. The alkaloids may also travel up the food web and affect members of the third trophic level. In this way they can produce trophic cascades which are rippling effects when a trophic level impacts those above or below it. We briefly summarize the general patterns of multitrophic effects of endophytes and highlight the most recent studies on this topic. Further, we report on our study in which we tested if different …
Do Botanophila Flies Provide Reproductive Isolation Between Two Species Of Epichloe Fungi? A Field Test, Thomas Bultman, Adrian Leuchtmann, T. Sullivan, Austin Dreyer
Do Botanophila Flies Provide Reproductive Isolation Between Two Species Of Epichloe Fungi? A Field Test, Thomas Bultman, Adrian Leuchtmann, T. Sullivan, Austin Dreyer
Thomas L. Bultman
P>Epichloe spp., fungal endophytes of cool season grasses, produce collars of mycelium (stromata) on host stems that Botanophila flies visit for egg laying. Flies transfer fungal gametes among stromata and thereby serve to cross-fertilize fungi. Hence, the interaction is analogous to insect pollination in angiosperms. While most Epichloe species are not interfertile, Epichloe typhina and Epichloe clarkii can hybridize. We investigated whether Botanophila flies play a role in the reproductive isolation of the two Epichloe species at a field site in southwestern Switzerland. We estimated the density of stromata and collected fly larvae and stromata occurring on plants. While …
Influence Of Genetic Variation In The Fungal Endophyte Of A Grass On An Herbivore And Its Parasitoid, Thomas Bultman, John Rodstrom, Kara Radabaugh, Joshua Vandop, James Librizzi, Leanna Longwell, Christina Pulas, Lashawn Grant, Terrence Sullivan
Influence Of Genetic Variation In The Fungal Endophyte Of A Grass On An Herbivore And Its Parasitoid, Thomas Bultman, John Rodstrom, Kara Radabaugh, Joshua Vandop, James Librizzi, Leanna Longwell, Christina Pulas, Lashawn Grant, Terrence Sullivan
Thomas L. Bultman
Neotyphodium coenophialum (Glenn, Bacon, Price & Hanlin) (Ascomycota: Clavicipitaceae) is an endophytic fungus that lives symbiotically within grasses and produces alkaloids that can help protect its hosts from some insect pests. We used laboratory-based experiments to investigate whether fungal genotype influences an herbivore and its parasitoid. We tested whether variation in novel isolates, plus a control lacking fungal infection, affected preference by fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae: Amphipyrini), and growth and survival of Euplectrus comstockii Howard (Hymenoptera: Eulophidae: Euplectrini), a parasitoid of fall armyworm. Caterpillars preferred leaf blades in choice experiments from uninfected tall fescue [Lolium arundinaceum (Schreb.) …
Extensions To And Modulation Of Defensive Mutualism In Grass Endophytes, Thomas Bultman, Terrence Sullivan, Michael Cortez, Timothy Pennings, Janet Andersen
Extensions To And Modulation Of Defensive Mutualism In Grass Endophytes, Thomas Bultman, Terrence Sullivan, Michael Cortez, Timothy Pennings, Janet Andersen
Thomas L. Bultman
No abstract provided.