TY - JOUR ID - 219718 TI - Impact of engineered nano silver on root- knot nematode, Meloidogyne incognita and on DNA damage in tomato plants under screen house conditions JO - Egyptian Journal of Chemistry JA - EJCHEM LA - en SN - 0449-2285 AU - R.M., Shoaib AU - Abdel-Razik, A.B. AU - Ebeed, Naglaa M. AU - Esmail, R.M. AU - Taha, Entsar H. AD - Genetic and Cytology Dept., Genetic Engineering and Biotechnology Division, National Research Centre, Dokki, Cairo, Egypt. AD - Department of Genetics, Faculty of Agriculture, Ain Shams University AD - Department of Plant Protection, Faculty of Agriculture, Ain Shams University Y1 - 2022 PY - 2022 VL - 65 IS - 9 SP - 171 EP - 187 KW - AgENPs KW - genotoxicity KW - Root-knot nematodes KW - tomato plants KW - nano residue DO - 10.21608/ejchem.2021.97189.4547 N2 - Root-knot nematodes are one of serious pathogens which cause economically losses to their host plants. Nanotechnology is a fast-growing technology in nematode and other pathogens management to avoid the hazard effects of chemical pesticides and nematicides on human health, non-target organisms and ecosystems. The effects of Ag engineered nanoparticles (AgENPs) synthesized by green method using plants with nematicidal properties or reductive potential such as Curcuma comosa (N1), Cycas circinalis (N2), Chitosan (N3) and Crotalaria juncea (N4) were tested. This study was done to investigate the genotoxic evaluation of the four AgENPs and the analysis of its effects through the assessment of pathogenicity and reproductivity of Meloidogyne incognita, plant growth parameters, silver residue, activity of antioxidative enzymes and assessment of DNA damage. The experiment was conducted using three old tomato seedlings which transplanted, treated with three concentrations of four AgENPs and infected with 1000 IJs M. incognita under screen house condition. The data demonstrated that, all nematode parameters were suppressed using the different concentrations of AgENPs. The suppressive effect was increased proportionally with the Ag concentrations. Moreover, the damage in DNA parameters was increased proportionally with concentration of AgENPs. Silver residue in tomato fruits after application is relatively very low. UR - https://ejchem.journals.ekb.eg/article_219718.html L1 - https://ejchem.journals.ekb.eg/article_219718_96c30a18a141c4a52ddfd4da9c14a5b2.pdf ER -