Utilizing an Extract from Endophytic Fungus, Alternaria alternata, Isolated from Ricinus communis L. Leaves as a Biological Agent for Controlling the Migratory Locust in Algeria | [Journal of Bioresource Management • 2023]

Author(s):

1. Laib Djamel Eddine: Department of Agronomy, Faculty of Sciences, 20 August 1955 University, Skikda,21000, Algeria; Department of Agriculture and Forestry Zoology National Agronomic Institute, El-Harrach, Algiers, 16000, Algeria

2. Benzehra Abdelmadjid: Department of Agriculture and Forestry Zoology National Agronomic Institute, El-Harrach, Algiers, 16000, Algeria

3. Laib Imen: Department of Natural and Life Sciences, Faculty of Sciences, 20 August 1955 University, Skikda, Algeria; BIOQUAL Laboratory, Institute of Nutrition, Food, and Agri-food Technologies (I.N.A.T.A.A.), Frères Mentouri University, 1, Ain El-Bey Road, 25000 Constantine, Algeria

4. Aouzal Badis: Department of Natural and Life Sciences, Faculty of Sciences, 20 August 1955 University, Skikda, Algeria; Laboratory for Research on Biodiversity Interactions and Biotechnology , Skikda,21000, Algeria

5. Akkal Salah: Valorization of Natural Resources, Bioactive Molecules and Biological Analysis Unit, Department of Chemistry, University of Mentouri Constantine 1, Constantine, 25000, Algeria

Abstract:

In this research, we aimed to explore the insecticidal potential of Alternaria alternata, an endophytic fungus derived from the leaves of castor oil plant. To test its insecticidal efficacy, various doses of A. alternata mycoextract were administered to Locusta migratoria L. through both topical and oral pathways. The findings revealed that the insects displayed the highest susceptibility to a concentration of 2 g/L, leading to an impressive mortality rate of 87.5 % and 93.75 % for topical and oral administrations, in the same order. The extract displayed remarkable insecticidal properties, demonstrating LC50 values of 1.09 g/L for the topical treatment and 1.129 g/L for the oral treatment. Moreover, the average survival times (LT50) for the insects were found to be 5.392 days and 6.867 days when subjected to the topical and oral treatments, respectively. The initial chemical investigation of the mycoextract unveiled the existence of different key metabolites responsible for the observed activities. Additionally, FTIR-ATR analysis indicated the presence of different groups in the mycoextract. Moreover, the GC-MS analysis identified multiple volatile insecticidal compounds in the fungal extract.

Page(s): 153-163

DOI: DOI not available

Published: Journal: Journal of Bioresource Management, Volume: 10, Issue: 4, Year: 2023

Keywords:

endophytic fungi , insecticidal activity , locusta migratoria , Alternaria alternata

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