Characterization of a new species of neisseria isolated from the liver of the gaoyou sheldrake

Abstract

A strain of Gram-negative diplococci was isolated from the liver of the Gaoyou Sheldrake. The 16S rRNA
gene sequences of this organism was most similar to Bacterium ‘New Zealand A’ (GenBank accession
no. AY721627), with 97% similarity to Neisseria animaloris in the Neisseria genus. It showed a diplococci
morphology by electron microscopy. The biochemical reactions of this strain resembles N. mucosa, and
it grew on nutrient agar and acidified dextrose, maltose, sucrose and did not acidified lactose. It was
positive for oxidase and nitrate reduction. These results suggest that this organism belongs to the
genus Neisseria, for which the name Neisseria tadorna sp. nov. is proposed. The strain was sensitive to
Fleroxacin, Amikacin, etc and resistant to spectinomycin, sulfamethoxazolum-trimethoprimum and
nalidixic acid.