Differential activation of defense-related genes in susceptible and resistant pepper cultivars infected with Phytophthora capsici
| Autor: | José Díaz, Fuencisla Merino, Cristina Silvar |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Phytophthora
biology Physiology fungi food and beverages Plant Science Glucanase biology.organism_classification Microbiology Phytophthora capsici Gene Expression Regulation Plant Pepper Botany biology.protein Genetic Predisposition to Disease Cultivar Capsicum Agronomy and Crop Science Gene Solanaceae Plant Diseases Plant Proteins Peroxidase |
| Zdroj: | Journal of Plant Physiology. 165:1120-1124 |
| ISSN: | 0176-1617 |
| DOI: | 10.1016/j.jplph.2007.11.008 |
| Popis: | This study investigated the expression pattern of genes encoding for a basic PR-1 protein, a basic beta-1,3-glucanase, a peroxidase, and a sesquiterpene cyclase involved in defense responses in three pepper cultivars with different levels of resistance to Phytophthora capsici. All genes were up-regulated in infected stems of the pepper cultivars, with expression being detected 8h post-inoculation. mRNA levels of these genes increased markedly by 24h post-inoculation, and maximal induction levels were observed for the PR-1 and sesquiterpene cyclase genes. PR-1, peroxidase, and sesquiterpene genes were always expressed at higher levels in resistant cultivars than in the susceptible cultivar, although up-regulation was observed in both, suggesting that the differences between these pepper genotypes in susceptibility and resistance are a matter of the timing and magnitude of the defense response. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect