Meiothermus rufus sp. nov., a new slightly thermophilic red-pigmented species and emended description of the genus Meiothermus.
Four red-pigmented isolates, with optimum growth temperatures of approximately 55-60 degrees C and an optimum pH for growth between 7.5 and 8.5, were recovered from hot springs in Central France. Phylogenetic analysis of the 16S rRNA gene sequences showed that these organisms represented a new species of the genus Meiothermus. The new isolates could be distinguished from other strains of the species of the genus Meiothermus primarily by the glycolipid profile and fatty acid composition because these organisms lacked the hydroxy fatty acids and the glycolipid variant GL-1a found in all other isolates of the species of Meiothermus examined. On the basis of the results presented here we propose the name Meiothermus rufus for the new species, which is represented by strains CAL-4(T) (=DSM 22234(T)=LMG 24878(T)) and CAL-12 (=DSM 22235=LMG 24879). We also propose emending the genus Meiothermus to include strains that have only one glycolipid instead of two glycolipid variants.
Albuquerque
Luciana
L
Department of Zoology and Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal.
Ferreira
Catarina
C
Tomaz
David
D
Tiago
Igor
I
Veríssimo
António
A
da Costa
Milton S
MS
Nobre
M Fernanda
MF
D001419:Bacteria / Q000737:chemistry / Q000145:classification* / Q000254:growth & development / Q000302:isolation & purification*; D018407:Bacterial Physiological Phenomena; D015373:Bacterial Typing Techniques; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D005602:France; D006017:Glycolipids / Q000032:analysis; D045482:Hot Springs / Q000382:microbiology*; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D010802:Phylogeny; D010860:Pigments, Biological / Q000096:biosynthesis; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013696:Temperature
D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D006017:Glycolipids; D010860:Pigments, Biological; D012336:RNA, Ribosomal, 16S