Abundance and composition of ammonia-oxidizing bacteria and archaea in different types of soil in the Yangtze River estuary.

Tidal flats are soil resources of great significance. Nitrification plays a central role in the nitrogen cycle and is often a critical first step in nitrogen removal from estuarine and coastal environments. We determined the abundance as well as composition of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in different soils during land reclamation process.

Altererythrobacter dongtanensis sp. nov., isolated from a tidal flat.

A Gram-negative, rod-shaped and non-spore-forming bacterial strain, JM27(T), was isolated from a tidal flat of Dongtan Wetland, Chongming Island, China. The strain formed smooth yellow colonies on R2A plates. Growth occurred at 10-37 °C (optimum, 30-37 °C), at pH 6.

Flavobacterium dongtanense sp. nov., isolated from the rhizosphere of a wetland reed.

Two strains of Gram-reaction-negative, rod-shaped, non-spore-forming, non-motile, aerobic bacteria, designated LW30(T) and LW29, were isolated from the rhizosphere of a wetland reed in Dongtan, Chongming Island, China. The strains formed pale-yellow colonies on R2A plates. Growth occurred at 4-37 °C (optimum 30 °C), at pH 6-9 (optimum pH 7-8) and in the presence of 0-3 % (w/v) NaCl (optimum 0-1 %).

Pseudomonas caeni sp. nov., a denitrifying bacterium isolated from the sludge of an anaerobic ammonium-oxidizing bioreactor.

Two Gram-negative, rod-shaped, motile, aerobic bacterial strains designated HY-14(T) and HY-24 were isolated from the sludge of an anaerobic ammonium-oxidizing bioreactor. The strains could not grow with 5 % (w/v) NaCl, did not produce acid from d-glucose or utilize d-glucose, gluconate or citrate as a sole carbon source. Summed feature 3 and C(16 : 0) were the most abundant fatty acids; hydroxyl fatty acids C(12 : 0) 3-OH and C(10 : 0) 3-OH were also present.

Henriciella marina gen. nov., sp. nov., a novel member of the family Hyphomonadaceae isolated from the East Sea.

A bacterial strain, designated Iso4(T), was isolated from the East Sea of Korea and was subjected to a poly-phasic taxonomy study including phenotypic and chemotaxonomic characteristics as well as 16S rRNA gene sequence analysis. Cells of the strain were Gram-negative, motile, non-budding, non-stalked, and strictly aerobic. Strain Iso4(T) grew optimally at 20 degrees C in the presence of 1 approximately 2% (w/v) NaCl and at pH 6.

Joostella marina gen. nov., sp. nov., a novel member of the family Flavobacteriaceae isolated from the East Sea.

A Gram-negative, non-spore-forming, non-motile, yellow-pigmented, strictly aerobic bacterial strain, designated En5(T), was isolated from the East Sea of Korea and was subjected to a polyphasic taxonomy study. Strain En5(T) grew optimally at 30 degrees C, in the presence of 1-3 % (w/v) NaCl and at pH 5.3-7.

Degradation of 2,6-di-tert-butylphenol by an isolated high-efficiency bacterium strain.

An aerobic bacterium strain, F-3-4, capable of effectively degrading 2, 6-ditert-butylphenol (2, 6-DTBP), was isolated and screened out from an acrylic fiber wastewater and the biofilm in the wastewater treatment facilities. This strain was identified as Alcaligenes sp. through morphological, physiological and biochemical examinations.

[The degradation characteristics of degrading bacterium of 2,6-di-tert-butylphenol].

A degrading bacterial strain F-3-4 for 2,6-Di-tert-butylphenol (2,6-DTBP) was isolated from biofilm in acrylic fiber wastewater treatment structures. By acclimation, its capacity for degradation of 2,6-DTBP was enhanced by 26%. It was identified as Alcaligenes sp.