An oat species lacking avenacin is susceptible to infection by Gaeumannomyces graminis var. tritici
1994
Osbourn, A.E. | Clarke, B.R. | Lunness, P. | Scott, P.R. | Daniels, M.J.
The saponin avenacin is a pre-formed inhibitor of fungal growth and occurs in the roots of Avena species. Gaeumannomyses graminis var. tritici (the causal agent of take-all disease of wheat) is unable to attack oats, apparently because of the sensitivity of this fungus to avenacin. After screening a wide range of oat genotypes, one species, Avena longiglumis, was identified which lacked detectable levels of avenacin and was susceptible to infection by G. graminis var. tritici, supporting a role for avenacin as a determinant of resistance to fungal attack.
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