Screening of Biological Activities of Fungi Associated with Pistachio Bark Beetle, Chaetoptelius vestitus (Coleoptera, Curculionidae), Infesting Pistachio Cultivations in Tunisia.

January 9, 2020 Uncategorized

Screening of Biological Activities of Fungi Associated with Pistachio Bark Beetle, Chaetoptelius vestitus (Coleoptera, Curculionidae), Infesting Pistachio Cultivations in Tunisia.

J Appl Microbiol. 2020 Jan 08;:

Authors: Hadj Taieb K, Gharsallah H, Ksentini I, Leclerque A, Schuster C, Cheffi M, Naayma S, Mohamed Ali T, Ksantini M

Abstract
AIMS: In this study, we aimed to explore the enzymatic diversity, the entomopathogenic and the antimicrobial potentialities of fungi associated with the pistachio bark beetle, Chaetoptelius vestitus.
METHODS AND RESULTS: A total of 40 isolates were screened for enzymatic diversity. Most of them, 92·5%, were able to produce at least two of the screened enzymes. Pathogenic assays performed on C. vestitus showed a high entomopathogenic activity of the isolates Ata_io_1 (Aspergillus tamarii), Fve_io_1 (Fusarium verticillioides), Tpi_io_1 (Talaromyces pinophilus), Pal_io_1 (Parengyodontium album), Pbi_io_2 (Penicillium bilaiae) and Pch_io_1 (P. chrysogenum), as based on mean mortality of C. vestitus. A screening of antimicrobial activity using well diffusion method showed that the isolates Tro_io_1 (T. pinophilus), Tat_io_1 (T. atroroseus) and Pch_io_1 (P. chrysogenum) presented the highest antibacterial activity. Furthermore, Mgu_io_1 (M. guilliermondii), Asc_io_1 (A. sclerotiorum), Ata_io_1 (A. tamarii), G. lavendula (Gla_io_1), Pva_io_1 (P. variotii), Pul_io_1 (P. ulaiense), Tat_io_1 (T. atroroseus) and Tro_io_1 (T. roseum) were active against at least two of three tested fungal phytopathogens.
CONCLUSIONS: Fungal isolates representing entomopathogenic activity and a broad spectrum of antimicrobial activities can be considered promising resources for biological pistachio trees protection.
SIGNIFICANCE AND IMPACT OF THE STUDY: Fungi associated with C. vestitus were investigated for detecting their potential biotechnological applications.

PMID: 31913566 [PubMed – as supplied by publisher]

Source: Industry