Loading...
  • succinoglycan
  • S. meliloti biosynthesises an extracellular polysaccharide called succinoglycan, which is well characterised in terms of its structure and biosynthesis. (ed.ac.uk)
  • These observations suggest that aggregation of S. meliloti cultures in the presence of succinoglycan is driven by macromolecular crowding, otherwise known as depletion attraction. (ed.ac.uk)
  • ubiquitous
  • Depletion attraction may therefore be a ubiquitous force driving aggregation of crowded dispersions of bacteria and polymers. (ed.ac.uk)
  • occur
  • This study has demonstrated for the first time that an extracellular polysaccharide produced by bacteria can result in aggregation via depletion attraction which may be an under explored mechanism by which aggregation of bacteria can occur. (ed.ac.uk)
  • adaptation
  • We also have found that flavins play a critical role in the ability of S. meliloti to promote plant-host adaptation to environmental stresses - the features defining the efficiency of bacterial inoculums used as a part of Rhizobium-Legume crop system. (wsu.edu)
  • inoculation
  • However the sterile growth-chamber experiments could be used to study the effect of S. meliloti inoculation on the development of Aphanomyces root rot. (wsu.edu)
  • depletion attraction
  • We suggest that, as found in colloidal dispersions, the presence of a non-adsorbing polymer in the form of the exopolysaccharide succinoglycan drives aggregation of S. meliloti by depletion attraction. (royalsocietypublishing.org)
  • These observations suggest that aggregation of S. meliloti cultures in the presence of succinoglycan is driven by macromolecular crowding, otherwise known as depletion attraction. (ed.ac.uk)
  • Furthermore alternative polymers such as the bacterial extracellular polysaccharide xanthan produced by Xanthomonas campestris can result in aggregation of bacteria by depletion attraction. (ed.ac.uk)
  • Depletion attraction may therefore be a ubiquitous force driving aggregation of crowded dispersions of bacteria and polymers. (ed.ac.uk)
  • This study has demonstrated for the first time that an extracellular polysaccharide produced by bacteria can result in aggregation via depletion attraction which may be an under explored mechanism by which aggregation of bacteria can occur. (ed.ac.uk)
  • chromosome
  • However, the frequency of divergent ITS types within the two groups of rhizobia depended on the host symbiotic preference observed in natural environment, allowing to speculate about the existence of a chromosome types specific for S. meliloti isolates with differential salt tolerance. (deepdyve.com)
  • populations
  • Many microorganisms such as bacteria proliferate extremely fast and the populations may reach high cell densities. (jove.com)
  • Infection
  • Examination of the nip nodules by light microscopy after staining with X-Gal for S. meliloti expressing a constitutive GUS gene, by confocal microscopy following staining with SYTO-13, and by electron microscopy revealed that nip initiated symbiotic interactions and formed nodule primordia and infection threads. (plantphysiol.org)
  • intergenic
  • A "landing pad" (LP) sequence consisting of a spectinomycin- resistance gene, aadA ( SpR ), and the E. coli ß-glucuronidase gene ( uidA ) flanked by attP sites has been integrated into the chromosomes of Sinorhizobium meliloti, Ochrobactrum anthropi, and Agrobacterium tumefaciens in an intergenic region, the ampC locus, and the tetA locus, respectively. (jove.com)
  • insects
  • Recently, several other nematode species have been shown to utilize bacteria to kill insects 9-13 , and investigations have begun examining the interactions between the nematodes and bacteria in these systems 9 . (jove.com)
  • biofilms
  • Biofilms, or surface-attached communities of cells encapsulated in an extracellular matrix, represent a common lifestyle for many bacteria. (jove.com)
  • Biofilms develop when bacteria transition from individual, planktonic cells to form complex, multi-cellular communities 2 . (jove.com)
  • The marine bacterium V. fischeri has become a model for biofilm formation due to the critical role of biofilms during host colonization: biofilms produced by V. fischeri promote its colonization of the Hawaiian bobtail squid Euprymna scolopes 8-10 . (jove.com)
  • V. fischeri therefore provides a simple model system to assess the mechanisms by which bacteria regulate biofilm formation and how biofilms impact host colonization. (jove.com)