![]() ![]() The wild grass- Neotyphodium symbiotum in this study broadens the number of wild E+ grasses available for expanded explorations into the effects of endophyte metabolites on insect herbivory.ĭetrimental and Neutral Effects of a Wild Grass-Fungal Endophyte Symbiotum on Insect Preference and PerformanceĬlement, Stephen L. These results extend the phenomenon of variable effects of E+ wild grasses on the preference and performance of phytophagous insects. melanopus showed no preference for E+ or E- test plants and endophyte infection did not adversely affect the survival and development of larvae. Prior damage of E+ test plants did not induce higher levels of resistance to R. padi preferred E- over E+ test plants in choice experiments and E+ undamaged test plants constitutively expressed antibiosis resistance to this aphid by suppressing population growth. ![]() The experiments tested for both constitutive and wound-induced resistance in E+ plants to characterize possible plasticity of defense responses by a wild E+ grass. This study quantified the preference and performance of the bird cherry oat-aphid, Rhopalosiphum padi (L.) (Hemiptera: Aphididae) and the cereal leaf beetle, Oulema melanopus (L.) (Coleoptera: Chrysomelidae), two important pests of forage and cereal grasses, on Neotyphodium-infected (E+) and uninfected (E-) plants of the wild grass Alpine timothy, Phleum alpinum L. Few experimental studies with wild grass-endophyte symbiota, compared to endophyte-infected agricultural grasses, have tested for anti-insect benefits, let alone for resistance against more than one insect species. Seed-borne Epichloë/Neotyphodium Glenn, Bacon, Hanlin (Ascomycota: Hypocreales: Clavicipitaceae) fungal endophytes in temperate grasses can provide protection against insect attack with the degree of host resistance related to the grass-endophyte symbiotum and the insect species involved in an interaction. Detrimental and neutral effects of a wild grass-fungal endophyte symbiotum on insect preference and performance.Ĭlement, Stephen L Hu, Jinguo Stewart, Alan V Wang, Bingrui Elberson, Leslie R ![]()
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