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GrainGenes Reference Report: AEM-65-3364

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Reference
AEM-65-3364
Title
Isolation, characterization, and Avenacin sensitivity of a diverse collection of cereal-root-colonizing fungi.
Journal
Applied and Environmental Microbiology
Year
1999
Volume
65
Pages
3364-3372
Author
Carter JP
Spink J
Cannon PF
Daniels MJ
Osbourn AE
Abstract
Summary: A total of 161 fungal isolates were obtained from the surface-sterilized roots of field-grown oat and wheat plants in order to investigate the nature of the root-colonizing fungi supported by these two cereals. Fungi were initially grouped according to their colony morphologies and then were further characterized by ribosomal DNA sequence analysis. The collection contained a wide range of ascomycetes and also some basidiomycete fungi. The fungi were subsequently assessed for their abilities to tolerate and degrade the antifungal oat root saponin, Avenacin A-1. Nearly all the fungi obtained from oat roots were Avenacin A-1 resistant, while both Avenacin-sensitive and Avenacin-resistant fungi were isolated from the roots of the non-saponin-producing cereal, wheat. The majority of the Avenacin-resistant fungi were able to degrade Avenacin A-1. These experiments suggest that Avenacin A-1 is likely to influence the development of fungal communities within (and possibly also around) oat roots
External Databases
Pubmed: 10427021
Keyword
avena sativa
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