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Home Publications Tree Planters' Notes Tree Planters' Notes Volume 63, Number 1 (2020) Effect of Endomycorrhizal Inoculum on the Growth and Protection of Olive Plants Against Phytophthora palmivora

Effect of Endomycorrhizal Inoculum on the Growth and Protection of Olive Plants Against Phytophthora palmivora

This study demonstrated beneficial effects of the symbiotic relationship between mycorrhizal arbuscular fungi (AM) and olive trees. Young olive trees were treated with a composite mycorrhiza treatment with and without inoculation of the pathogenic Phytophthora palmivora. A non-inoculated control was also included. Mycorrhizal plants had greater morphology compared with non-mycorrhizal plants. Of particular interest was the fact that plants inoculated with the pathogen, in the presence of mycorrhizae, had much higher growth compared with those that were inoculated with the pathogen only, indicating disease resistance due to mycorrhizal colonization. A total of 36 mycorrhizal fungal species were isolated from the rhizosphere of mycorrhizal olive plants with a spore count of 121 spores/100 g soil, compared with 27 species and a spore density of 67 spores/100 g in the rhizosphere of plants inoculated with both Phytophthora palmivora and mycorrhizae. Species frequency also varied between the two treatments.


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Author(s): S. Msairi, M. Chliyeh, M. Artib, S. Elgabardi, K. Selmaoui, A. Ouazzani Touhami, R. Benkirane, A. Douira

Publication: Tree Planters' Notes - Volume 63, Number 1 (2020)

Volume: 63

Number: 1