Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

Copper susceptibility in Acinetobacter junii BB1A is related to the production of extracellular polymeric substances.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
اقرأ على الانترنت اقرأ أكثر حفظ في قائمتي
  • المؤلفون: Yadav KK;Yadav KK; Mandal AK; Chakraborty R
  • المصدر:
    Antonie van Leeuwenhoek [Antonie Van Leeuwenhoek] 2013 Aug; Vol. 104 (2), pp. 261-9. Date of Electronic Publication: 2013 Jun 12.
  • نوع النشر :
    Journal Article; Research Support, Non-U.S. Gov't
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: Springer Country of Publication: Netherlands NLM ID: 0372625 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1572-9699 (Electronic) Linking ISSN: 00036072 NLM ISO Abbreviation: Antonie Van Leeuwenhoek Subsets: MEDLINE
    • بيانات النشر:
      Publication: 2004- : Berlin : Springer
      Original Publication: Wageningen, Netherland [etc.] Veenman [etc.]
    • الموضوع:
      Acinetobacter/*drug effects ; Acinetobacter/*metabolism ; Copper/*pharmacology ; Trace Elements/*pharmacology; Cyclic N-Oxides/pharmacology ; Microbial Sensitivity Tests ; Polymers/metabolism ; Quorum Sensing/drug effects ; Spectrometry, X-Ray Emission
    • نبذة مختصرة :
      Acinetobacter junii BB1A cells, grown in different media, were differentially inhibited in the presence of the copper. The minimum inhibitory concentration of Cu(2+) was influenced by the nutrient status of the media. The production of extracellular polymeric substances (EPS) was stimulated by the copper present in the growth medium. The nature of the EPS was anionic showing non-Newtonian pseudoplastic behaviour. The thermal behaviour of the EPS was studied by differential scanning calorimetry. The EPS was amorphous in nature with a crystalline index of 0.16. Scanning electron micrographs revealed its porous structure. Cells grown in the presence of quorum sensing inhibitor (QSI: 4-Nitropyridine-N-oxide) did not produce EPS and were found to be more sensitive to Cu(2+) than cells which produced EPS in the absence of QSI. EPS production in different media in the presence and absence of Cu(2+) was determined. The production of EPS was the highest in brain heart Infusion medium and the lowest in AB minimal medium. The sorption of Cu(2+) by EPS extracted from cells grown in non-copper-complexing AB medium was demonstrated by energy dispersive X-ray spectroscopy. A pertinent functional aspect of EPS in providing protection to A. junii in copper stress condition has been revealed.
    • الرقم المعرف:
      0 (Cyclic N-Oxides)
      0 (Polymers)
      0 (Trace Elements)
      789U1901C5 (Copper)
      ULB29Z652D (4-nitropyridine 1-oxide)
    • الموضوع:
      Date Created: 20130613 Date Completed: 20131106 Latest Revision: 20151119
    • الموضوع:
      20250114
    • الرقم المعرف:
      10.1007/s10482-013-9946-9
    • الرقم المعرف:
      23756604