Biofilm formation and resistance to bactericides of <Emphasis Type="Italic">Pseudomonas syringae</Emphasis> pv. <Emphasis Type="Italic">theae</Emphasis> |
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| Authors: | Tsuyoshi Tomihama Yatsuka Nishi Kei Arai |
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| Institution: | (1) Tea Division, Kagoshima Prefectural Institute for Agricultural Development, 3964 Nagasato, Chiran-cho, Kawanabe-gun, Kagoshima 897-0302, Japan;(2) Agricultural Environment Division, Kagoshima Prefectural Institute for Agricultural Development, 2200 Oono, Kinpou-cho, Minamisatsuma 899-3401, Japan;(3) Department of Agriculture, University of Kagoshima, 1-21-24 Korimoto, Kagoshima 890-0065, Japan |
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| Abstract: | Biofilm-grown cells of Pseudomonas syringae pv. theae (P.s.theae) wild-type strain K9301 on abiotic surface had remarkable resistance to kasugamycin in comparison to planktonically grown
cells; however, the biofilm-grown cells of K9301 had the same sensitivity to copper sulfate. Because both the lesser biofilm-forming
strain K9301S3 and enhanced biofilm-forming strain K9301-6 also had remarkable biofilm resistance to kasugamycin just as K9301
did and because epigallocatechin gallate, which enhanced biofilm formation of P.s.theae, had no effect on biofilm resistance to kasugamaycin, the degree of biofilm formation was not correlated with the antibiotic
susceptibilities. In addition, K9301 and K9301S3 had less sensitivity to kasugamycin but had high sensitivity to copper sulfate
on nonwounded leaf surfaces. These results indicate a possibility that the mechanism of P.s.theae biofilm resistance to bactericide functions on both abiotic and nonwounded leaf surfaces. |
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| Keywords: | Pseudomonas syringae pv theae (P s theae) Biofilm Resistance to bactericide Epigallocatechin gallate (EGCg) Survival on phyllosphere |
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