Antibacterial potential of green magnesium oxide nanoparticles against rice pathogen Acidovorax oryzae

被引：40
作者：
Ahmed, Temoor [1 ,2 ]
Noman, Muhammad [1 ,2 ]
Shahid, Muhammad [3 ]
Shahid, Muhammad Shafiq [4 ]
Li, Bin [1 ,2 ]
机构：
[1] Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310058, Peoples R China
[2] Zhejiang Univ, Inst Biotechnol, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Hangzhou 310058, Peoples R China
[3] Govt Coll Univ, Dept Bioinformat & Biotechnol, Faisalabad 38000, Pakistan
[4] Sultan Qaboos Univ, Coll Agr & Marine Sci, Dept Plant Sci, Al Khoud 123, Oman
来源：
MATERIALS LETTERS | 2021年 / 282卷
基金：
中国国家自然科学基金;
关键词：
Antibacterial activity; Biomaterials; Nanoparticles; Rice pathogen; BIOSYNTHESIS;
D O I：
10.1016/j.matlet.2020.128839
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium oxide nanoparticles (MgONPs) have emerged as effective antibacterial agents with unique physiochemical properties. Here, we report antibacterial activity of MgONPs produced by using Acinetobacter johnsonii strain RTN1 against rice pathogen Acidovorax oryzae for the first time. The physico-chemical and optical properties of biogenic MgONPs were elucidated by using UV-vis spectroscopy, FTIR, XRD, EDS, SEM, and TEM. Biogenic MgONPs showed substantial antibacterial activity (35.2 +/- 0.61 mm zone of inhibition) against A. oryzae at 20 mg mL(-1) and significantly reduced cell density (80.83% MIC at OD600) of pathogen in broth culture. The ultrastructure studies revealed the morphological disruptions in MgONPs-treated A. oryzae cells as compared to control. Hence, the MgONPs could be used to formulate a potent nanopesticide for A. oryzae. (C) 2020 Elsevier B.V. All rights reserved.
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页数：5
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