reclassification of agrobacterium ferrugineum lmg 128 as hoeflea marina gen. nov., sp. nov.members of the species agrobacterium ferrugineum were isolated from marine environments. the type strain of this species (= lmg 22047(t) = atcc 25652(t)) was recently reclassified in the new genus pseudorhodobacter, in the order 'rhodobacterales' of the class 'alphaproteobacteria'. strain lmg 128 (= atcc 25654) was also initially classified as belonging to the species agrobacterium ferrugineum; however, the nearly complete 16s rrna gene sequence of this strain indicated that it does not belong w ...200515879249
hoeflea phototrophica sp. nov., a novel marine aerobic alphaproteobacterium that forms bacteriochlorophyll a.within a collection of marine strains that were shown to contain the photosynthesis reaction-centre genes pufl and pufm, a novel group of alphaproteobacteria was found and was characterized phenotypically. the 16s rrna gene sequence data suggested that the strains belonged to the order rhizobiales and were closest (98.5 % sequence similarity) to the recently described species hoeflea marina. the cells contained bacteriochlorophyll a and a carotenoid, presumably spheroidenone, in small to medium ...200616585702
hoeflea alexandrii sp. nov., isolated from the toxic dinoflagellate alexandrium minutum al1v.a gram-negative, aerobic, non-symbiotic bacterium (am1v30(t)) was isolated from the toxic dinoflagellate alexandrium minutum al1v. on the basis of 16s rrna gene sequence similarity, strain am1v30(t) was most closely related (97.4 % similarity) to the type strain of hoeflea marina, which belongs to the family phyllobacteriaceae within the order rhizobiales of the class alphaproteobacteria. a polyphasic approach was used to clarify the taxonomic position of strain am1v30(t). during the course of t ...200616902042
pathway evolution by horizontal transfer and positive selection is accommodated by relaxed negative selection upon upstream pathway genes in purple bacterial carotenoid biosynthesis.horizontal gene transfer and selection are major forces driving microbial evolution. however, interactions between them are rarely studied. phylogenetic analyses of purple bacterial carotenoid biosynthesis genes suggest two lineages: one producing spheroidenone and the other producing spirilloxanthin. of the latter lineage, rubrivivax gelatinosus s1 and hoeflea phototrophica dfl-43 also or instead produce spheroidenone. evolution of the spheroidenone pathway from that producing spirilloxanthin t ...200919820094
hoeflea anabaenae sp. nov., an epiphytic symbiont that attaches to the heterocysts of a strain of anabaena.the heterotrophic, epiphytic symbiotic bacterial strain wh2k(t) was previously isolated from a two-member culture in which it was attached to the heterocysts of a strain of anabaena (ssm-00). analysis of its 16s rrna genes demonstrated that the symbiont was most closely related to the type strain of hoeflea marina (96.9% similarity), which belongs to the family phyllobacteriaceae within the order rhizobiales of the class alphaproteobacteria. a polyphasic taxonomic study was performed on strain w ...201021075905
Pseudahrensia aquimaris gen. nov., sp. nov., isolated from sea water of Yellow Sea in Korea.A Gram-staining-negative, non-motile, ovoid to rod-shaped bacterial strain, designated HDW-32T, was isolated from seawater of the Yellow Sea, Korea. Strain HDW-32T grew optimally at pH 7.0-8.0, at 30 °C and in the presence of 2-3 % (w/v) NaCl. Strain HDW-32T exhibited highest 16S rRNA gene sequence similarity value (95.1 %) to Nitratireductor basaltis J3T, and sequence similarity values of 94.8 % to Ahrensia kielensis IAM 12618T and less than 94.2 % to other species used in the phylogenetic anal ...201122021581
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