Biological Nitrogen Removal Database

Nisaea denitrificans strain DR41_21

• Phylum : Proteobacteria
• Class : Alphaproteobacteria
• Order :Rhodospirillales
• Family : Rhodospirillaceae
• Genus : Nisaea

NO₃^-,NO₂^-

Various compounds

Reference:Urios et al., 2008

Title:Nisaea Denitrificans Gen. Nov., Sp. Nov. And Nisaea Nitritireducens Sp. Nov., Two Novel Members of the Class Alphaproteobacteria From the Mediterranean Sea

Pubmed ID:18842852

Pubmed link:Link

Full research link:Link

Abstract: Two novel Gram-negative bacteria, designated strains DR41_21(T) and DR41_18(T), were isolated from coastal, surface waters of the north-western Mediterranean Sea. The cells were motile, pleomorphic rods, 2.9 microm long and 0.9 microm wide and formed cream colonies on marine agar medium. The G+C content of the genomic DNA was 60 mol%. Phylogenetic analysis of 16S rRNA gene sequences positioned the isolates in the class Alphaproteobacteria within the family Rhodospirillaceae. The 16S rRNA gene sequence similarity of the two strains was 98.8 % but DNA-DNA hybridization indicated only 55 % relatedness. Strain DR41_21(T) was able to denitrify and possessed nirK and nosZ genes, unlike strain DR41_18(T), which possessed only nirK. These isolates represent two novel species of a new genus, Nisaea gen. nov., for which the names Nisaea denitrificans sp. nov. and Nisaea nitritireducens sp. nov. are proposed. The type strain of Nisaea denitrificans is DR41_21(T) (=DSM 18348(T)=CIP 109265(T)=OOB 129(T)) and the type strain of Nisaea nitritireducens is DR41_18(T) (=DSM 19540(T)=CIP 109601(T)=OOB 128(T)).