Superoxide-Mediated Extracellular Biosynthesis of Silver Nanoparticles by the Fungus Fusarium oxysporum

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Superoxide-Mediated Extracellular Biosynthesis of Silver Nanoparticles by the Fungus Fusarium oxysporum
	Yin, Yongguang; Yang, Xiaoya; Hu, Ligang; Tan, Zhiqiang; Zhao, Lixia; Zhang, Zhen; Liu, Jingfu; Jiang, Guibin
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
	2016-04
卷号	3 期号:4 页码:160-165
英文摘要	The biosynthesis of silver nanoparticles (AgNPs) by microorganisms has become a hot topic in recent years, although its mechanism is still not well understood. Here we report the extracellular biosynthesis of AgNPs by the fungus Fusarium oxysporum through a superoxide-dependent mechanism. Reduction of Ag+ to AgNPs in the extracellular region of F. oxysporum was verified by transmission electron microscopy, while the superoxide produced extracellularly by F. oxysporum was evidenced by chemiluminescence. We further demonstrated that the biosynthesis of AgNPs was inhibited by a superoxide scavenger or the inhibitor of NADH oxidases, and the addition of NADH significantly improved the formation of AgNPs. These results demonstrated that, for the first time, the fungus F. oxysporum can mediate the synthesis of AgNPs through the enzymatic generation of extracellular superoxide, which is helpful in understanding the biosynthesis of AgNPs and the biomineralization and transformation of silver and other metals or metalloids.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35955]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Yin, Yongguang,Yang, Xiaoya,Hu, Ligang,et al. Superoxide-Mediated Extracellular Biosynthesis of Silver Nanoparticles by the Fungus Fusarium oxysporum[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2016,3(4):160-165.
APA	Yin, Yongguang.,Yang, Xiaoya.,Hu, Ligang.,Tan, Zhiqiang.,Zhao, Lixia.,...&Jiang, Guibin.(2016).Superoxide-Mediated Extracellular Biosynthesis of Silver Nanoparticles by the Fungus Fusarium oxysporum.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,3(4),160-165.
MLA	Yin, Yongguang,et al."Superoxide-Mediated Extracellular Biosynthesis of Silver Nanoparticles by the Fungus Fusarium oxysporum".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 3.4(2016):160-165.