Trichoderma harzianum elicits defence response genes in roots of potato plantlets challenged by Rhizoctonia solani

Gallou, Adrien;Cranenbrouck, Sylvie;Declerck, Stephan
(2009) European Journal of Plant Pathology — Vol. 124, n° 2, p. 219-230 (2009)

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Abstract
Biological control of Rhizoctonia solani with Trichoderma harzianum has been demonstrated in several studies. However, none have reported the dynamics of expression of defence response genes. Here we investigated the expression of these genes in potato roots challenged by R. solani in the presence/absence of T. harzianum Rifai MUCL 29707. Analysis of gene expression revealed an induction of PR1 at 168 h post-inoculation (hpi) and PAL at 96 hpi in the plants inoculated with T. harzianum Rifai MUCL 29707, an induction of PR1, PR2 and PAL at 48 hpi in the plants inoculated with R. solani and an induction of Lox at 24 hpi and PR1, PR2, PAL and GST1 at 72 hpi in the plants inoculated with both organisms. These results suggest that in the presence of T. harzianum Rifai MUCL 29707, the expression of Lox and GST1 genes are primed in potato plantlets infected with R. solani at an early stage of infection.
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Gallou, A., Cranenbrouck, S., & Declerck, S. (2009). Trichoderma harzianum elicits defence response genes in roots of potato plantlets challenged by Rhizoctonia solani. European Journal of Plant Pathology, 124(2), 219-230. https://doi.org/10.1007/s10658-008-9407-x (Original work published 2009)