KMID : 0545120180280122071
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Journal of Microbiology and Biotechnology 2018 Volume.28 No. 12 p.2071 ~ p.2078
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Nitrogen Sources Inhibit Biofilm Formation of Xanthomonas oryzae pv. oryzae
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Ham Young-Seok
Kim Tae-Jong
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Abstract
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Xanthomonas oryzae pv. oryzae(Xoo) causesbacterial blight, which results in a severe economic damage to rice farms. Xoo produces biofilms for pathogenesis and survival both inside and outside the host. Biofilms, which are important virulence factors, play a key role in causing the symptoms of Xoo infection. In the present study, we investigated nutritional conditions for the biofilm formation of Xoo. Although the biofilm formation of Xoo may be initiated by their interactions with the host, there is no mature biofilm formation without the support of favorable nutritional conditions. Nitrogen sources inhibited biofilm formation by overwhelming the positive effect of cell growth on biofilm formation. Limited nutrients with low amino acid concentration supported the biofilm formation of Xoo in the xylem sap rather than in the phloem sap of rice.
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KEYWORD
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Xanthomonas oryzae pv. oryzae, biofilm, nitrogen source, rice, xylem
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