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Mycorrhiza induced resistance in potato plantlets challenged by Phytophthora infestans |
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| Authors: | Adrien Gallou Hernán Patricio Lucero Mosquera Sylvie Cranenbrouck Juan Pablo Suárez Stéphane Declerck |
| Institution: | aUniversité catholique de Louvain (UCL), Earth and Life Institute, Mycology, Place croix du Sud 3, 1348 Louvain-la-Neuve, Belgium;bCentro de Biología Celular y Molecular, Universidad Técnica Particular de Loja, San Cayetano Alto s/n C.P. 11 01 608, Loja, Ecuador;cUniversité catholique de Louvain (UCL), Earth and Life Institute, Mycology, Mycothèque de l’Université catholique de Louvain (MUCL2), Place croix du Sud 3, 1348 Louvain-la-Neuve, Belgium |
| Abstract: | Biological control of soil-borne pathogens by arbuscular mycorrhizal (AM) fungi has been repeatedly demonstrated. However, their role in the control of above-ground hemibiotrophic pathogens is less conclusive. Here, we investigated in vitro the impact of an AM fungus on Phytophthora infestans in potato plants. The leaf infection index was decreased in mycorrhizal potato plants. Real-Time Quantitative PCR revealed the induction of two pathogenesis related genes (PR1 and PR2) in the leaves of mycorrhizal plants shortly after infection with P. infestans. These results suggested a systemic resistance in mycorrhizal plants, related to the priming of the two PR genes in potato. |
| Keywords: | Arbuscular mycorrhiza fungus Defence genes Systemic resistance In vitro system Phytophthora infestans Solanum tuberosum |
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