Regulation by Organic Acids of Polysaccharide-mediated Microbe-plant Interactions.

DOI Web Site Web Site PubMed 被引用文献1件 参考文献7件
  • NAKATA Kuniho
    Central Research Laboratories, Mercian Corporation
  • KOBAYASHI Takayoshi
    Chemistry of Organic Resources Laboratory, Department of Industrial Chemistry, Faculty of Technology, Chiba Institute of Technology
  • TAKIGUCHI Yasuyuki
    Chemistry of Organic Resources Laboratory, Department of Industrial Chemistry, Faculty of Technology, Chiba Institute of Technology
  • YAMAGUCHI Tatsuaki
    Chemistry of Organic Resources Laboratory, Department of Industrial Chemistry, Faculty of Technology, Chiba Institute of Technology

この論文をさがす

抄録

  A polysaccharide flocculant of Klebsiella pneumoniae H12 has been suggested to mediate microbe-plant interactions with the aid of Ca2+ [K. Nakata et al., Biosci. Biotechnol. Biochem., 64, 459-465, 2000]. Here, two-way regulation of polysaccharide-mediated interactions between K. pneumoniae and Raphanus sativus was studied using organic acids. Namely, 10 mM equivalents of organic acids promoted production of the polysaccharide by the bacterium, but inhibited flocculation of bacterial cells by the polysaccharide. These phenomena were counterbalanced by equi-molar equivalents of Ca2+, suggesting competition for Ca2+ between the carboxylic residues of the polysaccharide and those of the aliphatic acids. By electron microscopy observations, bacterial cell aggregates were sparsely distributed over the main roots and root hairs, had various sizes, and seemed to tightly adhere to root tissues. Their shapes seemed to be distorted and abundant in cavities. In brief, these microscopical observations may be explained by a two-way regulation system of bacterial adhesion to a plant by organic acids.<br>

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (7)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ