Qualitative Disease Resistance

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Quantitative Disease Resistance

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The Molecular Basis of Qualitative/Major gene resistance a chronological summary

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What does this mean?

What did classical genetics tell us?

Predictions

What was known about R-genes?

Three elegant studies

Elicitors from the Cladosporium fulvum/ tomato system

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Conclusions

Unstable nature of R-genes

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Conclusion

Cell Autonomous Nature of R-genes

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