| Autor: |
Tan MY; Laboratory of Plant Breeding, Wageningen University and Research Centre, P.O. Box 386, 6700 AJ, Wageningen, The Netherlands., Hutten RC, Celis C, Park TH, Niks RE, Visser RG, van Eck HJ |
| Jazyk: |
angličtina |
| Zdroj: |
Molecular plant-microbe interactions : MPMI [Mol Plant Microbe Interact] 2008 Jul; Vol. 21 (7), pp. 909-18. |
| DOI: |
10.1094/MPMI-21-7-0909 |
| Abstrakt: |
The distinction between field resistance and resistance based on resistance (R) genes has been proven valid for many plant-pathogen interactions. This distinction does not seem to be valid for the interaction between potato and late blight. In this study, a locus involved in late blight resistance, derived from Solanum microdontum, provides additional evidence for this lack of distinction. The resistance is associated with a hypersensitive response and results in a delay of infection of approximately 1 to 2 weeks. Both a quantitative as well as a qualitative genetic approach were used, based on data from a field assay. Quantitative trait locus (QTL) analysis identified a QTL on chromosome 4 after correction of the resistance data for plant maturity. A qualitative genetic analysis resulted in the positioning of this locus on the short arm of chromosome 4 in between amplified fragment length polymorphism marker pCTmACG_310 and cleaved amplified polymorphic sequence markers TG339 and T0703. This position coincides with a conserved Phytophthora R gene cluster which includes R2, R(2-like), R(Pi-blb3), and R(Pi-abpt). This implies that R(Pi-mcd1) is the fifth R gene of this nucleotide-binding site leucine-rich repeat cluster. The implications of our results on R-gene-based and field resistance are discussed. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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