Open AccessOptimised green synthesis of copper oxide nanoparticles and their antifungal activity
Author(s) -
Huang Weidong,
Fang Hao,
Zhang Shuya,
Yu Haibing
Publication year - 2021
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mna2.12060
Subject(s) - spore germination , copper , germination , nanoparticle , spore , nuclear chemistry , scanning electron microscope , antifungal , chemistry , mycelium , agar , botany , materials science , biology , microbiology and biotechnology , nanotechnology , organic chemistry , bacteria , genetics , composite material
Copper oxide (CuO) nanoparticles were synthesised from Ginkgo biloba L. leaf extract and several parameters that affected their formation were adjusted. The optimal synthesis system was ascertained as 10 ml leaf filtrate, 1 mM copper sulfate, and 80°C. The scanning electron microscope image showed that the synthesised CuO nanoparticles were shaped like a short rod. The antifungal effect of CuO nanoparticles against Bipolaris maydis was operated through agar well diffusion, mycelial growth, spore germination, and detached inoculation. At the concentration of 200 µg/ml, the suppression rate was up to 62.78%, and the spore germination was totally inhibited irrespective of suspension in a liquid or on detached maize leaf. The results are of great significance for comprehensive control of plant diseases, and it also provides a novel antimicrobial to assist or substitute chemical pesticides.