Wheat germ agglutinin in wheat seedling roots: induction by elicitors and fungi |
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Authors: | Bruno P A Cammue Willem F Broekaert Willy J Peumans |
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Institution: | (1) Laboratorium voor Plantenbiochemie, K.U. Leuven, Willem De Croylaan, 42, B-3030 Leuven, Belgium;(2) Present address: F.A Janssens Memorial Laboratory for Genetics, K.U. Leuven, Willem De Croylaan, 42, B-3030 Leuven, Belgium |
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Abstract: | Summary Treatment of wheat (Triticum aestivum L.) seedlings with elicitors originating from either plant or fungal cell walls induces about a 2-fold increase of wheat germ agglutinin (WGA) in the roots. While the WGA content in roots of healthy plants normally decreases as a function of germination time, a transient accumulation of WGA could be observed in plants challenged with different fungi, including Rhizoctonia solani, Fusarium culmorum, Pythium ultimum and Neurospora crassa. Peak levels in challenged roots were 2 to 5 times as high as in control plants. Most of this induced WGA could be released from the roots by soaking them in a solution of the hapten N-acetylglucosamine. On the basis of the results obtained it is postulated that WGA may be involved in the defence of wheat against fungal attack. |
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