Reclassification of Aurantimonas altamirensis (Jurado et al. 2006), Aurantimonas ureilytica (Weon et al. 2007) and Aurantimonas frigidaquae (Kim et al. 2008) as members of a new genus, Aureimonas gen. nov., as Aureimonas altamirensis gen. nov., comb. nov., Aureimonas ureilytica comb. nov. and Aureimonas frigidaquae comb. nov., and emended descriptions of the genera Aurantimonas and Fulvimarina

Abstract

Members of the genera Aurantimonas and Fulvimarina have largely been described on the basis of 16S rRNA gene sequence analyses, biochemical tests and limited chemotaxonomic data. Examination of the polar lipid compositions of members of these two genera indicated that although the patterns were similar with regards the phospholipid and amino lipid compositions, there were clear differences in the presence or absence of the glycolipid sulfoquinovosyldiacylglycerol (SQDG). This glycolipid was absent in members of the species Aurantimonas coralicida and Fulvimarina pelagi but was present in Aurantimonas altamirensis, Aurantimonas ureilytica and Aurantimonas frigidaquae. These results are also consistent with the 16S rRNA sequence-based grouping. We therefore propose that the genus Aurantimonas be divided further to reflect this additional information. Thus, it is recommended that Aurantimonas altamirensis, Aurantimonas ureilytica and Aurantimonas frigidaquae are transferred to a new genus, Aureimonas gen. nov., as Aureimonas altamirensis gen. nov., comb. nov. (type strain S21BT = CECT 7138T = CIP 109525T = KCTC 22106T = LMG 23375T = DSM 21988T), Aureimonas ureilytica comb. nov. (type strain 5715S-12T = KACC 11607T = DSM 18598T = CIP 109815T) and Aureimonas frigidaquae comb. nov. (type strain CW5T = KCTC 12893T = JCM 14755T = DSM 21987T). The type species of the new genus is Aureimonas altamirensis. Additionally, emended descriptions of the genera Aurantimonas and Fulvimarina are provided.

Fulvimarina manganoxydans sp. nov., isolated from a deep-sea hydrothermal plume in the south-west Indian Ocean

“…Members of only a few genera were retrieved from marine environments, which are distributed primarily in the families Rhodobiaceae (Hiraishi et al, 1995;Brettar et al, 2007) and 'Aurantimonadaceae' (Cho & Giovannoni, 2003;Denner et al, 2003). The latter includes four genera, Aurantimonas (Denner et al, 2003), Fulvimarina (Cho & Giovannoni, 2003), Martelella (Rivas et al, 2005) and Aureimonas (Rathsack et al, 2011). Except for the genus Aureimonas, which was created by division from the genus Aurantimonas (Rathsack et al, 2011), the members of the family 'Aurantimonadaceae' were all derived from marine environments.…”

“…The latter includes four genera, Aurantimonas (Denner et al, 2003), Fulvimarina (Cho & Giovannoni, 2003), Martelella (Rivas et al, 2005) and Aureimonas (Rathsack et al, 2011). Except for the genus Aureimonas, which was created by division from the genus Aurantimonas (Rathsack et al, 2011), the members of the family 'Aurantimonadaceae' were all derived from marine environments. Furthermore, several strains of this family are capable of Mn(II) oxidation (Anderson et al, 2009).…”

“…Furthermore, several strains of this family are capable of Mn(II) oxidation (Anderson et al, 2009). The genus Fulvimarina was proposed by Cho & Giovannoni (2003) and its description was emended by Rathsack et al (2011). At the time of writing, it comprises only one species, Fulvimarina pelagi, which was isolated from water of the Sargasso Sea by using high-throughput culturing methods (Cho & Giovannoni, 2003).…”

Aurantimonas aggregata sp. nov., isolated from deep-sea sediment

“…It currently comprises three valid species: Aurantimonas coralicida (type species), isolated from a diseased colony of the scleractinian coral in the Florida Keys [1]; Aurantimonas endophytica, isolated from roots of Anabasis elatior sampled at Urumqi, PR China [2]; Aurantimonas manganoxydans, isolated from a water sample (125 m depth) collected at Vancouver Island; and one species not yet validly described, 'Aurantimonas litoralis', which was isolated from surface water of the Pacific Ocean off the Oregon coast [3]. The polar lipid sulfoquinovosyldiacylglycerol (SQDG) is absent in Aurantimonas strains but present in Aureimonas strains, which is a key taxonomy standard to differentiate these two genera [2,4]. During a screening of oligotrophic bacteria from the seafloor of the Ross Sea, Antarctica, a novel bacterium which was designated as strain R14M6…”

Bacterial clade with the ribosomal RNA operon on a small plasmid rather than the chromosome

“…AU20. The genus Aureimonas (family Aurantimonadaceae, order Rhizobiales, class Alphaproteobacteria) contains three defined species, Aureimonas altamirensis, Aureimonas ureilytica, and Aureimonas frigidaquae, and its members have been isolated from diverse environments (10). To characterize this bacterial group from a genomic viewpoint, we determined the complete genome sequence of Aureimonas sp.…”