Hypersensitive Reaction in Petunia |
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Authors: | S. Nicoud E. Dumas A. Cornu S. Gianinazzi |
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Affiliation: | Station d'Amélioration des Plantes INRA B.v. 1540/210 34 Dijon Cedex (France). |
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Abstract: | Intercellular fluid (IF) extracted from the apoplastic leaf spaces of Petunia contained up to 6 new soluble proteins, called d proteins (d0 to d5). Characterisation of the d proteins has shown that they can be divided into groups and show a genetic variability similar to the PR(b) proteins from Nicotiana. d protein patterns from Petunia interspecific hybrids clearly show that the determinant for the d proteins in sexually transmitted as is the case for b proteins in Nicotiana. d-protein induction in TMV-SM1 infected Petunia leaves is discussed in relation to the resistance to infection shown by cultivars and hybrids of Petunia. |
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