A new function of graphene oxide emerges: inactivating phytopathogenic bacterium Xanthomonas oryzae pv. Oryzae

Research Paper


Xanthomonas oryzae pv. oryzae (Xoo) is one representative phytopathogenic bacterium causing bacteria infections in rice. The antibacterial activity of graphene suspended in different dispersants against Xoo was first investigated. Bacteriological test data, fluorescence microscope and transmission electron microscopy images are provided, which yield insight into the antibacterial action of the nanoscale materials. Surprisingly, the results showed graphene oxide (GO) exhibits superior bactericidal effect even at extremely low dose in water (250 μg/mL), almost killing 94.48 % cells, in comparison to common bactericide bismerthiazol with only 13.3 % mortality. The high efficiency in inactivating the bacteria on account of considerable changes in the cell membranes caused by the extremely sharp edges of graphene oxide and generation of reactive oxygen species, which may be the fatal factor for bacterial inactivation. Given the superior antibacterial effect of GO and the fact that GO can be mass-produced with low cost, we expect a new application could be developed as bactericide for controlling plant disease, which may be a matter of great importance for agricultural development.


Xanthomonas oryzae pv. oryzae Graphene Antibacterial activity Mechanisms Bactericide Agriculture 



The authors gratefully acknowledge the financial support for this research from National Natural Science Foundation of China (21175051), the Fundamental Research Funds for the Central Universities (2011PY139), and the Natural Science Foundation of Hubei Province Innovation Team (2011CDA115).

Supplementary material

11051_2013_1658_MOESM1_ESM.doc (476 kb)
Supplementary material 1 (DOC 476 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.State Key Laboratory of Agricultural MicrobiologyCollege of Science, Huazhong Agricultural UniversityWuhanPeople’s Republic of China

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