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Arcobacter
Published in Dongyou Liu, Handbook of Foodborne Diseases, 2018
Nuria Salas-Massó, Alba Perez-Cataluña, Luis Collado, Arturo Levican, Maria José Figueras
The capacity of Arcobacter to survive and grow in aerobiosis, at ambience temperature, together with their tolerance to NaCl are probably the reasons for the higher environmental persistence of these bacteria than that of Campylobacter species [1,3,11]. In fact, the genome and proteome of A. butzleri have been described as more similar to Sulfuromonas denitrificans and Wolinella succinogenes, both members of the Helicobacteraceae, and also more similar to the deep-sea vent Epsilonproteobacteria Sulfurovum and Nitratiruptor, than to the other members of the Campylobacteraceae [29]. Furthermore, a substantial proportion of the A. butzleri genome is devoted to growth and survival under diverse environmental conditions, with a large number of proteins associated with respiration, signal transduction, chemotaxis, DNA repair, and adaptation [29].
Enhanced removal of antibiotics using Eichhornia crassipes root biomass in an aerobic hollow-fiber membrane bioreactor
Published in Biofouling, 2022
Sevcan Aydin, Duygu Nur Arabacı, Aiyoub Shahi, Hadi Fakhri, Suleyman Ovez
The most abundant genus in all biofilm samples, Sulfurovum (Figure 7), was previously reported to contain species that transform sulfur to sulphate (Inagaki et al. 2004). Three dominant groups of genera can also be detected in biofilm samples. The first group (group1B) consists of Terrimonas, Petrimonas, Gracilibacter, Christensellaceae R-7 Group, Proteiniphilum, Oscillibacter, Janthinobacterium, Macellibacteroides and Ruminiclostridium. Unidentified Nitrospiraceae, Sulfurovum, Dechloromonas, and Candidatus Competibacter are the second group (group 2B) of dominant genera. The third group (group 3B) includes Ferruginibacter, CL500-29 marine group, Zoogloea, unidentified Cytophagaceae, Rhodobacter, Gemmobacter, Bdellovibro, Hydrogenophaga, Psychrobacillus and Mesorhizobium. Because of different living conditions in the reactors, each group had a different ecological function. The genera in groups 2B were adapted to antibiotic containing environment while genera in group 3B were adapted to antibiotics and WHRB.
Analysis of marine microbial communities colonizing various metallic materials and rust layers
Published in Biofouling, 2019
Yimeng Zhang, Yan Ma, Jizhou Duan, Xiaohong Li, Jing Wang, Baorong Hou
As expected, SRP were the most abundant groups in the rust layers (Figure 6). This result is consistent with that in the authors’ former research to study the microbial communities in corrosion products formed on carbon steel in the same site but immersed for eight years (Li et al. 2017). Despite of this, the spatial distribution of bacteria changed from the inside to outside the rust layer in terms of taxonomic classification. The out layer sample had a higher proportion of Alphaproteobacteria (22%) and Clostridia (18%), whilst the middle and inner layers had a higher proportion of Deltaproteobacteria (75% and 31%, respectively) (Table S1). At the genus level, Desulfotomaculum (16%) within Clostridia was the dominant genus in the samples from the outside rust layers. Its abundance decreased to 3% and Desulfonatronum (70%) within Deltaproteobacteria became the predominant genus in the middle rust layer. The inner layer contained primarily three other SRP genera, named Desulfovibrio (12%) and Desulfobacter (10%) within Detaproteobacteria and Desulfotomaculum (11%) within Clostridia. Despite the sea mud also being in an anaerobic environment, it harbors high amounts of the genus Sulfurovum (19%), a sulfur oxidizer, and an unidentified genus occurring in sediments (6%).