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Taxonomic characterisation of Proteusterrae sp. nov., a N2O-producing, nitrate-ammonifying soil bacterium
Ist Teil von
Antonie van Leeuwenhoek, 2015-10, Vol.108 (6), p.1457-1468
Ort / Verlag
Cham: Springer International Publishing
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
In the context of studying the influence of N-fertilization on N
2
and N
2
O flux rates in relation to the soil bacterial community composition in fen peat grassland, a group of bacterial strains was isolated that performed dissimilatory nitrate reduction to ammonium and concomitantly produced N
2
O. The amount of nitrous oxide produced was influenced by the C/N ratio of the medium. The potential to generate nitrous oxide was increased by higher availability of nitrate-N. Phylogenetic analysis based on the 16S rRNA and the
rpoB
gene sequences demonstrated that the investigated isolates belong to the genus
Proteus
, showing high similarity with the respective type strains of
Proteus vulgaris
and
Proteus penneri
. DNA–DNA hybridization studies revealed differences at the species level. These differences were substantiated by MALDI-TOF MS analysis and several distinct physiological characteristics. On the basis of these results, it was concluded that the soil isolates represent a novel species for which the name
Proteus terrae
sp. nov. (type strain N5/687
T
=DSM 29910
T
=LMG 28659
T
) is proposed.