title: Analysis of phospholipids and ornithine-containing lipids from Mesorhizobium spp.
abstract: Polar lipid compositions of seven strains belonging to the four species of the Mesorhizobium genus were described. The lipid patterns of Mesorhizobium strains were very similar. Only quantitative differences were observed. Diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), and phosphatidylcholine (PC) were found to be the major phospholipids of the analysed bacteria. In addition, two methylated derivatives of PE were observed: phosphatidyl-N,N-dimethylethanolamine (DMPE) and phosphatidyl-N-monomethylethanolamine (MMPE). Polar head groups of those phospholipids were predominately acylated with lactobacillic (19:0 cyclopropane) acid. Ornithine-containing lipid (OL) was also identified. 3-hydroxy fatty acids found in the lipid preparations were derived exclusively from the ornithine lipid. 3-hydroxylactobacillic was the main acyl residue amide linked to the ornithine.
authors.affiliation: Department of General Microbiology, Maria Curie-Skłodowska University, Poland. achoma@biotop.umcs.lublin.pl
authors.forename: Adam
authors.initials: A
authors.lastname: Choma
authors.forename: Iwona
authors.initials: I
authors.lastname: Komaniecka
mesh_terms: D020561:Alphaproteobacteria / Q000737:chemistry*; D007887:Fabaceae / Q000382:microbiology*; D005227:Fatty Acids / Q000032:analysis; D008055:Lipids / Q000032:analysis* / Q000737:chemistry; D013058:Mass Spectrometry / Q000379:methods; D009952:Ornithine; D010743:Phospholipids / Q000032:analysis*
chemical_list: D005227:Fatty Acids; D008055:Lipids; D010743:Phospholipids; D009952:Ornithine