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Sphingomonas hankyongensis sp. nov. isolated from tap water
Yun, Sung-Sik,Siddiqi, Muhammad Zubair,Lee, Soon-Youl,Kim, Minseok S.,Choi, KangDuk,Im, Wan-Taek Springer-Verlag 2016 Archives of microbiology Vol.198 No.8
<P>A Gram reaction-negative, strictly aerobic, non-motile, translucent and rod-shaped bacterium (designated W1-2-4(T)) isolated from tap water was characterized by a polyphasic approach to clarify its taxonomic position. Strain W1-2-4(T) was observed to grow optimally at 25-30 A degrees C and at pH 6.5 on nutrient agar. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain W1-2-4(T) belongs to the genus Sphingomonas and is most closely related to the Sphingomonas fennica K101(T) (95.3 % similarity). The G+C content of genomic DNA was 67.1 mol%. Chemotaxonomic data [major ubiquinone-Q-10, major polyamine-homospermidine, major fatty acids-summed feature 8 (comprising C-18:1 omega 7c/omega 6c), C-16:0 and C-14:0 2OH] supported the affiliation of strain W1-2-4(T) to the genus Sphingomonas. Strain W1-2-4(T) could be differentiated genotypically and phenotypically from the recognized species of the genus Sphingomonas. The novel isolate therefore represents a novel species, for which the name Sphingomonas hankyongensis sp. nov. is proposed, with the type strain W1-2-4(T) (=KACC 18308(T) = LMG 28595(T)).</P>
Baatartsogt. O,Erdenesuvd. J,Suh S.W,Kim Y.K,Kim Y.Y,Anh K.C,Lim H.K,Choi Kangduk 한국가금학회 2009 한국가금학회 정기총회 및 학술발표회 Vol.26 No.-
Salmonella gallinarum (S. gallinarum) is the causative agent of fowl typhoid, a severe systemic disease of chickens that results in high mortality amongst infected flocks. Due to its virulence, the immune response to S.gallinarum is poorly characterized. The natural resistance-associated macrophage protein 1 (NRAMP1) affects host innate immunity to intracellular bacteria because of its ability to transport divalent cations in late endosome/lysosomes. The objectives of this study were to identify single nucleotide polymorphisms of the NRAMP1 gene in Hy-Line chicks by a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). A PCR-RFLP method was developed to identify a SacI polymorphism for Ser³??. To investigate associations between an NRAMP1 SNP and resistance against S.gallinarum, two NRAMP1 alleles of a T and C were analyzed to 3 genotypes, TT (802 bp), TC (802, 723 bp and 79 bp), and CC (723 and 79 bp). We evaluated the effect of 3 genotypes, such as TT(66 %), CC (36.9 %) and TC (41.9 %) alleles on mortality after S. gallinarum challenge.