alexa Isolation and evaluation of bacteria and fungi as biological control agents against Rhizoctonia solani.


Journal of Plant Pathology & Microbiology

Author(s): Lahlali R, Bajii M, Jijakli MH

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Abstract Rhizoctonia solani is one of the most important limiting factors for potato production and storage in Belgium and worldwide. Its management is still strongly dependent on chemical treatments. The aim of this work was to evaluate the possibility of exploiting bacteria and fungi in order to control this pathogen. Among a collection of 220 bacterial strains isolated from different organs of healthy potato plants and rhizospheric soils, 25 isolates were selected using screening methods based on in vitro dual culture assays. The mycelial growth inhibition rate of the pathogen was ranged from 59.4 to 95.0\%. Also seven fungal strains isolated from the rhizospheric soil and potato roots showed a highly mycelial growth inhibition of R. solani. The mycelial growth inhibition rate obtained with these fungi was included between 60.0 and 99.4\%. From this preliminary study, the further investigations will be planned to determine the bacterial isolates systematic, species of fungal strains by using molecular tools and to assess their efficacy against R. solani in greenhouse trials.
This article was published in Commun Agric Appl Biol Sci and referenced in Journal of Plant Pathology & Microbiology

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