Antagonistic effect of Trichoderma harzianum against Phytophthora infestans in the North-west of Algeria — JBES

Kerroum Fatima, Karkachi Noureddine, Jamal Edinne Henni, Kihal Mabrouk

Departments of Biology, Faculty of Sciences, Laboratory of Microbiology Applied, Team of Plant pathology, University of Es-senia Oran, Algeria

Key words: Phytophthora infestans, Trichoderma harzianum, Biological Control, Tomato, Potao.


The oomycete, Phytophthora infestans is considered one of the most important pathogens of potatoes and tomatoes worldwide. A total of 38 Phytophthora infestans isolates were obtained from leaves, tubers and stems of infected crops of potato and tomato in different regions of the North West of Algeria in 2010, 2011 and 2012.

Based on morphological and physiological characteristics, they were tested for the virulence test on potatoes tubers and tomatoes leave then, for a biological control by using Trichoderma spp. as antagonistic agent. Trichoderma species are among important antagonists of plant pathogenic fungi. The main purpose of this study was to evaluate the biocontrol potential of native Trichoderma harzianum. Their antagonistic activities including competition and colonization against Phytophthora infestans with an inhibition rate of 86%.

Get the original articles in Source: Volume 6, Number 4, April 2015 — IJAAR

Journal Name: International Journal of Agronomy and Agricultural Research (IJAAR)

Published By: International Network for Natural Sciences

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