TY - JOUR
T1 - The polar lipid composition of Walsby's square bacterium
AU - Oren, Aharon
AU - Duker, Sara
AU - Ritter, Sigalit
PY - 1996/5/1
Y1 - 1996/5/1
N2 - Square, gas vacuole-containing Archaea of the type first described by Walsby were found to dominate in a saltern crystallizer pond in Eilat, Israel. To obtain information on the taxonomic position of these yet uncultured bacteria, we analyzed the polar lipids present in the microbial community in the saltern brine. In addition to phosphatidylglycerol, phosphatidylglycerophosphate and phosphatidylglycerosulfate we found one glycolipid, chromatographically identical with the sulfated diglycosyl diether lipid found as the major glycolipid in Haloferax species. As the square bacteria contributed at least 85% of the total membrane surface in the biota of the sample examined, we concluded, based on polar lipid composition, that these organisms are unrelated to the genera Halobacterium and Haloarcula, and probably belong to a new genus.
AB - Square, gas vacuole-containing Archaea of the type first described by Walsby were found to dominate in a saltern crystallizer pond in Eilat, Israel. To obtain information on the taxonomic position of these yet uncultured bacteria, we analyzed the polar lipids present in the microbial community in the saltern brine. In addition to phosphatidylglycerol, phosphatidylglycerophosphate and phosphatidylglycerosulfate we found one glycolipid, chromatographically identical with the sulfated diglycosyl diether lipid found as the major glycolipid in Haloferax species. As the square bacteria contributed at least 85% of the total membrane surface in the biota of the sample examined, we concluded, based on polar lipid composition, that these organisms are unrelated to the genera Halobacterium and Haloarcula, and probably belong to a new genus.
KW - Glycolipid
KW - Haloarcula
KW - Halobacterium
KW - Halophilic Archaea
KW - Saltern
KW - Square bacteria
UR - http://www.scopus.com/inward/record.url?scp=0029896747&partnerID=8YFLogxK
U2 - 10.1016/0378-1097(96)00085-7
DO - 10.1016/0378-1097(96)00085-7
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AN - SCOPUS:0029896747
SN - 0378-1097
VL - 138
SP - 135
EP - 140
JO - FEMS Microbiology Letters
JF - FEMS Microbiology Letters
IS - 2-3
ER -