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Mycogenic Silver Nanoparticles From Endophytic Trichoderma atroviride with Antimicrobial Activity

Journal of Renewable Materials 2020年第2期8卷 171-185页

作者： Ahmed Abdel-Azeem Amr A.Nada Anthonia O’Donovan Vijay Kumar Thakur Amr Elkelish Microbiology Section Department of BotanyFaculty of ScienceUniversity of Suez CanalIsmailia41522Egypt Department of Analysis and Evaluation Egyptian Petroleum Research InstituteNasr CityCairoP.B.11727Egypt Institut Européen des Membranes IEMUMR-5635Univ MontpellierENSCMCNRSMontpellierFrance School of Science and Computing Galway-Mayo Institute of TechnologyGalwayIreland Enhanced Composites and Structures Center School of AerospaceTransport and ManufacturingCranfield UniversityBedfordshireUK Botany Section Department of BotanyFaculty of ScienceUniversity of Suez CanalIsmailia41522Egypt

There is an increasing interest in developing nanoparticles with diverse biologic *** this end,we prepared 10 to 15 nm silver nanoparticles(AgNP)from native isolates of Trichoderma *** this study,endophytic fungi hosted four medicinal plants in Saint Katherine Protectorate,South Sinai,Egypt have been isolated by surface sterilization technique on four isolation *** species,based on their frequency of occurrence,out of twenty recovered taxa were tested for their capability to synthesize extracellular *** atroviride hosted Chiliadenus montanus was found to be the best candidate for the production of mycogenic AgNPs among all examined *** mycosynthesized AgNPs were compared with chemically synthesized and characterized using Ultraviolet-visible(UV-vis)spectroscopy,Raman spectroscopy,X-ray diffraction(XRD)and high-resolution transmission electron microscopy(HRTEM)*** HRTEM result showed the distribution of spherical AgNPs ranging from 10 to 15 *** atroviride isolate was subjected to sequencing for confirmation of phenotypic *** internal transcribed spacer(ITS)1-5.8 s-ITS2 rDNA sequences obtained were compared with those deposited in the GenBank Database and registered with accession number MH283876 in the NCBI ***,anticandidal and antifungal effects of chemically and mycosynthesized AgNPs were examined at various concentrations in vitro against six pathogenic bacteria and 4 pathogenic fungi by agar well diffusion *** antibiotics;Gentamicin,Amoxicillin,Clotrimazole,and Nystatin at 5μg/disk were taken as positive controls,while 5%DMSO was used as the negative *** data revealed that the application of mycogenic AgNPs at a concentration of 100 ppm resulted in maximum inhibition of pathogenic bacteria and *** data suggest that AgNPs from native isolates of Trichoderma atroviride(MH283876)offer a source of rapid synthesis of eco-friendly,e

关键词： Antimicrobial endobionts mycogenic AgNPS Saint Katherine Protectorate

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