Efficient nitrogen removal of a novel Pseudomonas chengduensis strain BF6 mainly through assimilation in the recirculating aquaculture systems

Yi, Ming; Wang, He; Ma, Xiaona; Wang, Chun; Wang, Miao; Liu, Zhigang; Lu, Mi; Cao, Jianmeng; Ke, Xiaoli

doi:10.1016/j.biortech.2023.129036

Cited by 9 publications

(2 citation statements)

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“…The nitrogen metabolic pathway of strain WD211 showed that it lacked denitrification genes, and nitrogen in sewage was mainly removed through assimilation (Figure 3). However, it has been reported that the P. chengduensis strain BF6 could remove nitrogen through assimilation as it has a gene, nirK, encoding nitrite reductase, which reduces NO 2 − to NO through denitrification [17]. The difference in nitrogen metabolism genes between strain WD211 and strain BF6 may be caused by different habitats.…”

Section: Discussionmentioning

confidence: 99%

“…Pseudomonas chengduensis is a species of Pseudomonas that was newly discovered in 2014 [14], for which there is a paucity of research. Genes related to polyethylene terephthalate (PET) degradation, cadmium tolerance, and denitrification in the strain have been described from its genome [15][16][17], of which only the description of PET degradation genes is based on the complete genome. Important genomic insights into the aquaculture sewage treatment of this species remain undescribed.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Application Potential of Aquaculture Sewage Treatment of Pseudomonas chengduensis Strain WD211 Based on Its Complete Genome

Peng,

Wu,

et al. 2023

Genes

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Pseudomonas chengduensis is a new species of Pseudomonas discovered in 2014, and currently, there is a scarcity of research on this bacterium. The P. chengduensis strain WD211 was isolated from a fish pond. This study investigated the purification capability and environmental adaptability of strain WD211 in wastewater and described the basic features and functional genes of its complete genome. According to the results, the sewage treated with strain WD211 showed a decrease in concentration of 18.12% in total nitrogen, 89.39% in NH4+, 62.16% in NO3−, 79.97% in total phosphorus, and 71.41% in COD after 24 h. Strain WD211 is able to survive in a pH range of 6–11. It shows resistance to 7% sodium chloride and different types of antibiotics. Genomic analysis showed that strain WD211 may remove nitrogen and phosphorus through the metabolic pathway of nitrogen assimilation and phosphorus accumulation, and that it can promote organic decomposition through oxygenase. Strain WD211 possesses genes for producing betaine, trehalose, and sodium ion transport, which provide it with salt tolerance. It also has genes for antibiotic efflux and multiple oxidases, which give it antibiotic resistance. This study contributes to the understanding of the sewage treatment ability and potential applications of P. chengduensis.

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Section: Discussionmentioning

confidence: 99%