NGHIÊN CỨU HIỆU QUẢ CỦA HẠT NANO BẠC ỨC CHẾ MỘT SỐ CHỦNG NẤM THỰC VẬT (Fusarium oxysporum, Colletotrichum, Rhizoctonia sonali và Corynespora cassiicola) TRONG PHÒNG THÍ NGHIỆM
NGHIÊN CỨU HIỆU QUẢ CỦA HẠT NANO BẠC ỨC CHẾ MỘT SỐ CHỦNG NẤM THỰC VẬT (Fusarium oxysporum, Colletotrichum, Rhizoctonia sonali và Corynespora cassiicola) TRONG PHÒNG THÍ NGHIỆM
Effective research of silver nanoparticles inhibition in some vegetable mushroom vaccination (Fusurium oxysprorum, colletotrichum, Rhizoctonia Sonali and Crorynepora Cassiicola) of laboratory
This study will present the antifungal activity of silver nanoparticles (SNPs) in-vitro against some crop pathogenic fungi. SNPs were synthesized by chemical reduction of Ag+ in the presence of chitosan and citric acid. Characterizations of SNPs were carried out by using UV-VIS spectroscopy and transmission electron microscopy (TEM). The analytical data confirmed that particle size of the synthesized SNPs ranged from 2 - 10 nm at concentration up to 1000 ppm. SNPs demonstrated significant antifungal activity against plant pathogenic fungi: Fusarium oxysporium, Colletotrichum, Rhizoctonia solani, Corynespora cassiicola resulted in death of soybean in the seedling stage and yellow leaf fall at the rubber plantation in Vietnam. 100 mg/L SNPs concentration demonstrated effect of maximum inhibition on the growth of Fusarium oxysporium, Colletotrichum, Rhizoctonia solani and Corynespora cassiicola, which accounted for 57.62%, 79.57%, 78.07 % and 76.26%, respectively. This was much higher than that of comercial fungicides. The synthesis of SNPs by chemical method in the presence of chitosan and citric acid was found to be simple, fast and low cost-effective. SNPs produced can be used as an effective antifungal agent and alternative means for some other fungicides used in agriculture production to control plant pathogenic fungi.