Skip to Main Content
Fungal Endophytes of Wild Barley and their Effects on Diuraphis noxia Population DevelopmentAuthor(s): S.L. Clement; A. Dan Wilson; D.G. Lester; C.M. Davitt
Source: <i>Entomologia Experimentalis et Applicata</i>, <b>82:</b> 275-281
Publication Series: Miscellaneous Publication
PDF: Download Publication (133 KB)
DescriptionLaboratory experiments were conducted to compare the expression of Diuraphis noxia (Mordvilko) (Homoptera: Aphididae) resistance in four plant introduction (PI) lines of wild barley (Hordeum) infected with different species or strains of endophytic fungi (tribe Balansieae, family Clavicipitaceae, Neotyphodium gen. nov. [formerly Acremonium]). Aphid densities were significantly lower on endophyte-infected plants of PI 314696 (H. bogdanii Wilensky) and PI 440420 (H. brevisubulatum subsp. violaceum (Boissier & Hohenacker)), compared with densities on endophyte-free plants of both PI lines in population growth experiments. This endophyte-associated resistance was the result of antibiosis effects or starvation. In other experiments, endophyte-free plants of PI 269406 and PI 440413 (H. bogdunii) were not superior to endophyte-infected conspecifics as host plants of D. noxia. Our results demonstrate the.influence of host plant species/genotype and endophyte species/strain on expression of aphid resistance, provide an explanation of the high levels of D. noxia resistance in PI 314696 and PI 440420 previously reported in the literature, and underscore the potential importance of endophytic fungi in conferring insect resistance in wild barley.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationClement, S.L.; Wilson, A. Dan; Lester, D.G.; Davitt, C.M. 1997. Fungal Endophytes of Wild Barley and their Effects on Diuraphis noxia Population Development. Entomologia Experimentalis et Applicata, 82: 275-281
KeywordsHordeum brevisubulatum subsp. violaceum, Hordeum bogdanii, Neotyphodium (Acremonium) fungi, Diuraphis noxia, Russian wheat aphid, plant resistance, wild barley, alkaloids
- Clavicipitaceous anamorphic endophytes in Hordeum germplasm
- Semi-solid state bioremediation of CCA-treated wood using malted barley as a nutrient source
- A 1,3-1,4-β-glucan utilization regulon in Paenibacillus sp. strain JDR-2
XML: View XML