Metabolites as Intercellular Signals for Regulation of Community-Level Traits

作者: Russell D. Monds , George A. O'Toole

DOI: 10.1128/9781555815578.CH8

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摘要: This chapter describes work on new and emerging systems that describe roles for excreted cellular metabolites as intercellular signals. The therapeutic value of antibiotics is unquestionable; however, understanding the biological role these compounds in natural settings may not be intuitive definition would suggest. Increases biofilm formation were correlated with a 10-fold increase expression ica operon upon treatment antibiotic. internal concentration polyamines tightly regulated through combination biosynthesis, transport, excretion. In Escherichia coli, putrescine synthesized either by decarboxylation L-ornithine or Larginine followed removal urea molecule. P. aeruginosa known to make excrete both monorhamnolipids (mono-RHLs) dirhamnolipids (di-RHLs), which have one two attached rhamnose groups, respectively. E. indole imported from extracellular environment predominantly Mtr permease whereas efflux out cell performed AcrEF pump. provides evidence supports various regulation community-level traits, such formation, swarming, filamentation.

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