title: Changes in membrane fatty acid composition of Pseudomonas aeruginosa in response to UV-C radiations.
abstract: The changes in lipid composition enable the micro-organisms to maintain membrane functions in the face of environmental fluctuations. The relationship between membrane fatty acid composition and UV-C stress was determined for mid-exponential phase and stationary phase Pseudomonas aeruginosa. The total lipids were obtained by dichloromethane/methanol (3:1) and were quantified by GC. The TLC analysis of phospholipids showed the presence of three major fractions phosphatidylethanolamine, phosphatidylglycerol, and cardiolipin. Significant modifications, as manifested by an increase of UFA, were obtained. Interestingly, this microorganism showed a remarkable capacity for recovery from the stressful effects of UV-C.
authors: Laboratoire de Traitement des Eaux Usées, Centre des Recherches et des Technologies des Eaux CERTE, Technopole Borj Cédria, P.O. Box 273, 8020 Soliman, Tunisia.
authors: Salma Kloula Ben
authors: SK
authors: Ghorbal
authors: Abdelwaheb
authors: A
authors: Chatti
authors: Mohamed Marwan
authors: MM
authors: Sethom
authors: Lobna
authors: L
authors: Maalej
authors: Mouadh
authors: M
authors: Mihoub
authors: Sana
authors: S
authors: Kefacha
authors: Moncef
authors: M
authors: Feki
authors: Ahmed
authors: A
authors: Landoulsi
authors: Abdennaceur
authors: A
authors: Hassen
mesh_terms: D002462:Cell Membrane / Q000737:chemistry*; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005227:Fatty Acids / Q000032:analysis* / Q000302:isolation & purification; D011550:Pseudomonas aeruginosa / Q000737:chemistry* / Q000502:physiology / Q000528:radiation effects*; D013312:Stress, Physiological; D014466:Ultraviolet Rays
chemical_list: D005227:Fatty Acids