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- Title
The pyruvate decarboxylase 1 (PDC1) gene: negative regulator of disease resistance for Fusarium oxysporum and Verticillium dahliae.
- Authors
Papastolopoulou, C.; Diakou, G.; Gkizi, D.; Dimitrakas, V.; Paplomatas, E. J.; Tjamos, S. E.
- Abstract
Vascular wilt pathogens, cause serious economic losses in annual crops as well as in woody perennials. Fusarium oxysporum and Verticillium dahliae belong to the most destructive vascular wilt fungi since they have a very broad host range and there is no chemical treatment to control them. Therefore, there is need for the development of novel disease control strategies, based on the understanding of the plant - pathogen interaction. Towards this direction, this study examined the role of the pyruvate decarboxylase encoding genes PDC1 and PDC2 upon V. dahliae and F. oxysporum infection. Less Verticillium and Fusarium wilt symptoms were recorded in the pdc1 mutants compared to wt and pdc2. Quantitative polymerase chain reaction analysis revealed that the decrease in symptom severity shown in pdc1 was associated with reductions in the growth of both pathogens in the vascular tissues of the plants. Furthermore, it was shown that PDC1 was up-regulated upon F. oxysporum and V. dahliae infection in the root and above ground tissues of the wt plants; while PDC2 was mainly suppressed. It is also suggested that the observed pdc1 resistance against F. oxysporum and V. dahliae is the outcome of the activation of the plant defense mechanisms.
- Subjects
PYRUVATE decarboxylase; PATHOGENIC microorganisms; DISEASE resistance of plants; FUSARIUM oxysporum; VERTICILLIUM dahliae
- Publication
European Journal of Plant Pathology, 2018, Vol 152, Issue 1, p61
- ISSN
0929-1873
- Publication type
Article
- DOI
10.1007/s10658-018-1448-1