Dear Editor, We are so appreciated for your letter on our manuscript (NANO-D-13-00099), entitled a new function of graphene oxide emerge: inactivating phytopathogenic bacterium Xanthomonas oryzae pv.oryzae. We are also extremely greatful to the reviewers’ comments on our manuscript and carefully considered every comment, and made cautious revision accordingly. Based on their suggestions, we have answered the questions in detail one by one. If you have any other questions about this paper, I would quite appreciate it if you could let me know them in the earliest possible time. Most sincerely, Heyou Han July 12, 2012 Additive list To review er #1: Comment 1: Authors need to show the reduction property between GO and rgo through TEM and Raman spectroscopy. Answ er: Thanks for your very thoughtful suggestion. We have showed and discussed the characteristic of GO and rGO through TEM and Raman spectroscopy. The image of TEM and Raman spectroscopy are combined to the UV and FT-IR spectra of GO and rGO, which is named Fig. 2 in the revised manuscript. Comment 2: Always the bacterail growth need to show in log. Answ er: Thanks for your very thoughtful suggestion. The bacterial growth has been changed and showed in log. To review er #2: Comment 1: Graphene sheets may wrap cells causing cell death. The authors may also consider this mechanism in their discussion part. Lateral Dimension Dependent Antibacterial Activity of Graphene Oxide Sheets, Langmuir, 2012, 28, 12364−12372 Answ er: Thanks very much for your suggestion. I am sorry that I did not discuss the antibacterial mechanism clearly. We have read the reference carefully which you suggested me and rethink our results. The suggested mechanism hav...