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Article ; Online: Editorial: Aquaculture animal diseases: pathogens and control.

Ma, Rongrong / Yang, Yibin / Cao, Haipeng / Li, Pengfei

Frontiers in cellular and infection microbiology

2023 Volume 13, Page(s) 1223046

MeSH term(s)	Animals ; Aquaculture ; Animal Diseases/prevention & control
Language	English
Publishing date	2023-05-31
Publishing country	Switzerland
Document type	Editorial ; Research Support, Non-U.S. Gov't
ZDB-ID	2619676-1
ISSN	2235-2988 ; 2235-2988
ISSN (online)	2235-2988
ISSN	2235-2988
DOI	10.3389/fcimb.2023.1223046
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Article ; Online: Rhodobacter sphaeroides supplementation improves defense ability of Chinese mitten crab Eriocheir sinensis against Shewanella putrefaciens infection via intestinal flora and metabolism regulation.

Cao, Haipeng / Zheng, Xurui / Teng, Chenhao / Xu, La / Wang, Youhong / Gai, Chunlei / Ye, Haibin

Journal of invertebrate pathology

2024 , Page(s) 108120

Abstract: Shewanella putrefaciens is a vital bacterial pathogen implicated in serious diseases in Chinese mitten crab Eriocheir sinensis. Yet the use of probiotics to improve the defense ability of E. sinensis against S. putrefaciens infection remains poorly ... ...

Abstract	Shewanella putrefaciens is a vital bacterial pathogen implicated in serious diseases in Chinese mitten crab Eriocheir sinensis. Yet the use of probiotics to improve the defense ability of E. sinensis against S. putrefaciens infection remains poorly understood. In the present study, the protective effect of dietary R. sphaeroides against S. putrefaciens infection in E. sinensis was evaluated through antioxidant capability, immune response, and survival under bacterial challenge assays, and its protective mechanism was further explored using a combination of intestinal flora and metabolome assays. Our results indicated that dietary R. sphaeroides could significantly improve immunity and antioxidant ability of Chinese mitten crabs, thereby strengthening their disease resistance with the relative percentage survival of 81.09% against S. putrefaciens. In addition, dietary R. sphaeroides could significantly alter the intestinal microbial composition and intestinal metabolism of crabs, causing not only the reduction of potential threatening pathogen load but also the increase of differential metabolites in tryptophan metabolism, pyrimidine metabolism, and glycerophospholipid metabolism. Furthermore, the regulation of differential metabolites such as N-Acetylserotonin positively correlated with beneficial Rhodobacter could be a potential protection strategy for Shewanella infection. To the best of our knowledge, this is the first study to illustrate the protective effect and mechanism of R. sphaeroides supplementation to protect E. sinensis against S. putrefaciens infection.
Language	English
Publishing date	2024-04-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	390885-9
ISSN	1096-0805 ; 0022-2011
ISSN (online)	1096-0805
ISSN	0022-2011
DOI	10.1016/j.jip.2024.108120
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Article: Phenotypic and genomic characterization of pathogenic Providencia rettgeri from kuruma shrimp Marsupenaeus japonicus

Cao, Haipeng / Gu, Ying / Diao, Jing / Xu, La / Xu, Tianyue / Jin, Tongtong / Gai, Chunlei

Transboundary and emerging diseases. 2022 Sept., v. 69, no. 5

2022

Abstract: Providencia rettgeri has been recognized as a zoonotic pathogen of humans and aquaculture animals and has become a global public health concern. However, scarce information is available on the characterization of pathogenic P. rettgeri from kuruma shrimp ...

Abstract	Providencia rettgeri has been recognized as a zoonotic pathogen of humans and aquaculture animals and has become a global public health concern. However, scarce information is available on the characterization of pathogenic P. rettgeri from kuruma shrimp Marsupenaeus japonicus. In the present study, a P. rettgeri isolate (KM4) was confirmed as a causative agent of red leg disease in cultured M. japonicus, which showed a median lethal dose (LD₅₀) value of 5.01 × 10⁵ CFU·ml⁻¹ and had multiple resistances to aminoglycosides, sulfonamides, and tetracycline antimicrobials used in aquaculture. In addition, the whole genome of isolate KM4 was sequenced and found to consist of a single circular chromosome of 4,378,712 bp and a circular plasmid of 171,394 bp. The genome sequence analysis further revealed the presence of potential virulence and antibiotic resistance genes in isolate KM4, which probably rendered this isolate particularly virulent. To our knowledge, this is the first study to characterize P. rettgeri pathogens from kuruma shrimp infected with red leg disease. The findings of this study can provide novel insights into the presence and distribution of pathogenicity‐associated genes in shrimp‐pathogenic P. rettgeri.
Keywords	Marsupenaeus japonicus ; Providencia rettgeri ; aminoglycosides ; antibiotic resistance ; aquaculture ; chromosomes ; genome ; genomics ; lethal dose 50 ; nucleotide sequences ; pathogens ; phenotype ; plasmids ; public health ; sequence analysis ; tetracycline ; virulence
Language	English
Dates of publication	2022-09
Size	p. e2967-e2977.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	2414822-2
ISSN	1865-1682 ; 1865-1674
ISSN (online)	1865-1682
ISSN	1865-1674
DOI	10.1111/tbed.14647
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Article: Protective effects of Bacillus licheniformis against Citrobacter freundii infection in Chinese mitten crab Eriocheir sinensis

Cao, Haipeng / Huang, Xiaodong / Gu, Ying / Zheng, Xurui / Xu, La / Gai, Chunlei

Journal of invertebrate pathology. 2022 Sept., v. 193

2022

Abstract: Citrobacter freundii is an important bacterial pathogen that causes serious diseases in Chinese mitten crab Eriocheir sinensis. However, scarce information is available on the use of Bacillus licheniformis to protect E. sinensis from C. freundii ... ...

Abstract	Citrobacter freundii is an important bacterial pathogen that causes serious diseases in Chinese mitten crab Eriocheir sinensis. However, scarce information is available on the use of Bacillus licheniformis to protect E. sinensis from C. freundii infection by improving the immunity, antioxidant ability and intestinal flora. In the present study, a 60-day feeding trial was conducted to examine the potential effects of dietary supplementation with antagonistic B. licheniformis on the non-specific immunity, antioxidant capability, intestinal flora and resistance of E. sinensis to C. freundii infection. The results indicated that dietary supplementation of B. licheniformis could boost non-specific immunity and antioxidant capability of E. sinensis in a significant dose-dependent manner respectively by increasing serum lysozyme, superoxide dismutase, alkaline phosphatase, and catalase activities and hepatopancreatic superoxide dismutase, catalase, acid phosphatase activities. In addition, crabs fed diets with B. licheniformis displayed increased composition and diversity of the intestinal flora, and exhibited significant defense against C. freundii infection with the relative percentage survivals ranging from 61.9% to 100.0% for seven days. To our knowledge, this is the first report of antagonistic B. licheniformis as a supplement in Chinese mitten crab feed to effectively resist C. freundii infection by improving the non-specific immunity, antioxidant status and intestinal flora.
Keywords	Bacillus licheniformis ; Citrobacter freundii ; Eriocheir sinensis ; acid phosphatase ; alkaline phosphatase ; antioxidant activity ; antioxidants ; blood serum ; catalase ; dietary supplements ; dose response ; immunity ; intestinal microorganisms ; lysozyme ; pathogens ; superoxide dismutase
Language	English
Dates of publication	2022-09
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	390885-9
ISSN	1096-0805 ; 0022-2011
ISSN (online)	1096-0805
ISSN	0022-2011
DOI	10.1016/j.jip.2022.107805
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Article: Community structure and assembly of denitrifying bacteria in epiphytic biofilms in a freshwater lake ecosystem

Li, Guoqing / Yan, Dingbo / Xia, Pinhua / Cao, Haipeng / Lin, Tao / Yi, Yin

Journal of oceanology and limnology. 2022 May, v. 40, no. 3

2022

Abstract: Denitrifying bacteria are a crucial component of aquatic ecosystem in nitrogen cycle. However, the denitrifying bacterial community dynamics and structure in epiphytic biofilms remain unexplored. The abundance of denitrification gene (nir) and structure ... ...

Abstract	Denitrifying bacteria are a crucial component of aquatic ecosystem in nitrogen cycle. However, the denitrifying bacterial community dynamics and structure in epiphytic biofilms remain unexplored. The abundance of denitrification gene (nir) and structure of nirS-denitrifying bacterial community in the epiphytic biofilms collected in July and November of 2018 from a typical plateau lake (Caohai Wetland, Guizhou, China) were studied by Real-time Quantitative Polymerase Chain Reaction (qPCR) and high-throughput sequencing. Results show that the gene abundance of nirK was higher than that of nirS (P<0.05), and it was significantly different during the growth period (July) than the decline period (November). The denitrifying bacterial species was similar in the two months and shared 76.18% of OTUs. Proteobacteria (56.55%±22.15%) was the dominant phylum in all the samples. Epiphytic biofilms between growth period and decline period displayed significantly different microbial community structures due to differences in species abundance. Water temperature was the crucial factor that affected the denitrifying microbial community structure in our study. Environmental factors explain only partially the dynamic characteristics of denitrifying microbial communities, implying that the stochastic processes affected the construction of denitrifying microbial communities. As the null model analysis results show, dispersal limitation (stochastic) and undominated processes significantly influenced the assembly of denitrifying microbial communities. This study broadened our understanding of the denitrifying bacterial community structure and its function on epiphytic biofilms in freshwater ecosystems with new information provided.
Keywords	Proteobacteria ; bacterial communities ; biofilm ; community structure ; decline ; denitrification ; epiphytes ; freshwater ; freshwater lakes ; genes ; limnology ; nitrogen cycle ; oceanography ; quantitative polymerase chain reaction ; species abundance ; water temperature ; wetlands ; China
Language	English
Dates of publication	2022-05
Size	p. 1039-1050.
Publishing place	Science Press
Document type	Article
ISSN	2096-5508
DOI	10.1007/s00343-021-1084-z
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Article ; Online: Phenotypic and genomic characterization of pathogenic Providencia rettgeri from kuruma shrimp Marsupenaeus japonicus.

Cao, Haipeng / Gu, Ying / Diao, Jing / Xu, La / Xu, Tianyue / Jin, Tongtong / Gai, Chunlei

Transboundary and emerging diseases

2022 Volume 69, Issue 5, Page(s) e2967–e2977

Abstract	Providencia rettgeri has been recognized as a zoonotic pathogen of humans and aquaculture animals and has become a global public health concern. However, scarce information is available on the characterization of pathogenic P. rettgeri from kuruma shrimp Marsupenaeus japonicus. In the present study, a P. rettgeri isolate (KM4) was confirmed as a causative agent of red leg disease in cultured M. japonicus, which showed a median lethal dose (LD
MeSH term(s)	Aminoglycosides ; Animals ; Genomics ; Humans ; Penaeidae ; Providencia ; Sulfonamides ; Tetracyclines
Chemical Substances	Aminoglycosides ; Sulfonamides ; Tetracyclines
Language	English
Publishing date	2022-07-15
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2414822-2
ISSN	1865-1682 ; 1865-1674
ISSN (online)	1865-1682
ISSN	1865-1674
DOI	10.1111/tbed.14647
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Article ; Online: Protective effects of Bacillus licheniformis against Citrobacter freundii infection in Chinese mitten crab Eriocheir sinensis.

Cao, Haipeng / Huang, Xiaodong / Gu, Ying / Zheng, Xurui / Xu, La / Gai, Chunlei

Journal of invertebrate pathology

2022 Volume 193, Page(s) 107805

Abstract	Citrobacter freundii is an important bacterial pathogen that causes serious diseases in Chinese mitten crab Eriocheir sinensis. However, scarce information is available on the use of Bacillus licheniformis to protect E. sinensis from C. freundii infection by improving the immunity, antioxidant ability and intestinal flora. In the present study, a 60-day feeding trial was conducted to examine the potential effects of dietary supplementation with antagonistic B. licheniformis on the non-specific immunity, antioxidant capability, intestinal flora and resistance of E. sinensis to C. freundii infection. The results indicated that dietary supplementation of B. licheniformis could boost non-specific immunity and antioxidant capability of E. sinensis in a significant dose-dependent manner respectively by increasing serum lysozyme, superoxide dismutase, alkaline phosphatase, and catalase activities and hepatopancreatic superoxide dismutase, catalase, acid phosphatase activities. In addition, crabs fed diets with B. licheniformis displayed increased composition and diversity of the intestinal flora, and exhibited significant defense against C. freundii infection with the relative percentage survivals ranging from 61.9% to 100.0% for seven days. To our knowledge, this is the first report of antagonistic B. licheniformis as a supplement in Chinese mitten crab feed to effectively resist C. freundii infection by improving the non-specific immunity, antioxidant status and intestinal flora.
MeSH term(s)	Animal Feed/analysis ; Animals ; Antioxidants/pharmacology ; Bacillus licheniformis ; Brachyura ; Catalase/pharmacology ; China ; Citrobacter freundii ; Immunity, Innate ; Superoxide Dismutase
Chemical Substances	Antioxidants ; Catalase (EC 1.11.1.6) ; Superoxide Dismutase (EC 1.15.1.1)
Language	English
Publishing date	2022-07-31
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	390885-9
ISSN	1096-0805 ; 0022-2011
ISSN (online)	1096-0805
ISSN	0022-2011
DOI	10.1016/j.jip.2022.107805
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Article ; Online: Rhodobacter azotoformans supplementation improves defense ability of Chinese mitten crab Eriocheir sinensis against citrobacteriosis.

Cao, Haipeng / Zhang, Shumeng / An, Jian / Diao, Jing / Xu, La / Gai, Chunlei

Fish & shellfish immunology

2022 Volume 131, Page(s) 991–998

Abstract: Rhodobacter probiotics are considered as good alternatives to antibiotics for aquaculture. Yet the beneficial effects of Rhodobacter on Chinese mitten crab Eriocheir sinensis are still unclear, and more functions of Rhodobacter supplementation need to be ...

Abstract	Rhodobacter probiotics are considered as good alternatives to antibiotics for aquaculture. Yet the beneficial effects of Rhodobacter on Chinese mitten crab Eriocheir sinensis are still unclear, and more functions of Rhodobacter supplementation need to be clarified. In this study, a 60-day feeding trial was performed to investigate the protective effects of R. azotoformans against citrobacteriosis in E. sinensis by growth performance, serum immunity, hepatopancreatic antioxidant capability, intestinal flora, and resistance to Citrobacter freundii challenge assays. The results showed that R. azotoformans supplementation significantly and dose-dependently increased weight gain and specific growth rate as well as activities of serum immune and hepatopancreatic antioxidant enzymes, leading to notable improvement in the growth performance, serum immunity and hepatopancreatic antioxidant status of E. sinensis. Besides, R. azotoformans supplementation significantly enhanced intestinal microbial abundance and diversity in E. sinensis, and conferred significant protection of the crabs against C. freundii challenge with seven-day survival rates of 70.0%-100.0%. To the best of our knowledge, this is the first study to reveal the protective effects of R. azotoformans against citrobacteriosis in E. sinensis.
Language	English
Publishing date	2022-11-08
Publishing country	England
Document type	Journal Article
ZDB-ID	1067738-0
ISSN	1095-9947 ; 1050-4648
ISSN (online)	1095-9947
ISSN	1050-4648
DOI	10.1016/j.fsi.2022.11.012
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Article ; Online: Biofilm electrode reactor coupled manganese ore substrate up-flow microbial fuel cell-constructed wetland system: High removal efficiencies of antibiotic, zinc (II), and the corresponding antibiotic resistance genes.

Li, Hua / Cao, Haipeng / Li, Tao / He, Zhiming / Zhao, Jinhui / Zhang, Yifeng / Song, Hai-Liang

Journal of hazardous materials

2023 Volume 460, Page(s) 132394

Abstract: A coupled system comprised of a biofilm electrode reactor (BER) and a manganese ore substrate microbial fuel cell-constructed wetland (MFC-CW) system was used to remove co-exposed antibiotic and Zn (II), as well as simultaneously reduce copies of ... ...

Abstract	A coupled system comprised of a biofilm electrode reactor (BER) and a manganese ore substrate microbial fuel cell-constructed wetland (MFC-CW) system was used to remove co-exposed antibiotic and Zn (II), as well as simultaneously reduce copies of antibiotic resistance genes (ARGs) in the current study. In this system, BER primarily reduced the concentrations of antibiotics and Zn (II), and the effluent was used as the input to the MFC-CW, thereby providing electricity to BER. Co-exposure to a high concentration of Zn (II) decreased the relative abundances (RAs) of ARGs in the BER effluent, whereas the remaining sub-lethal concentration of Zn (II) increased the RAs of ARGs in the MFC-CW effluent. Even though the absolute copies of ARGs in the effluents increased during co-exposure, the total number of target ARG copies in the effluent of MFC-CW was significantly lower than that of BER. Moreover, BER pre-treatment eliminated most of Zn (II), which improved the electrical power generation characteristic of the MFC-CW unit. Correspondingly, the bacterial community and the ARGs hosts were analyzed to demonstrate the mechanism. In conclusion, the coupled system demonstrates significant potential to reduce antibiotics, Zn (II) and environmental risks posed by ARGs.
MeSH term(s)	Manganese ; Bioelectric Energy Sources ; Zinc ; Wetlands ; Anti-Bacterial Agents/pharmacology ; Biofilms ; Drug Resistance, Microbial/genetics ; Electrodes
Chemical Substances	Manganese (42Z2K6ZL8P) ; Zinc (J41CSQ7QDS) ; Anti-Bacterial Agents
Language	English
Publishing date	2023-08-24
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2023.132394
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Article ; Online: Insights into the nitrogen transformation mechanism of Pseudomonas sp. Y15 capable of heterotrophic nitrification and aerobic denitrification.

Chen, Jinliang / Shen, Liang / Li, Yu / Cao, Haipeng / Chen, Cuixue / Zhang, Guoliang / Xu, Zehai / Lu, Yinghua

Environmental research

2023 Volume 240, Issue Pt 1, Page(s) 117595

Abstract: Excessive nitrogen (N) discharged in water is a major cause of eutrophication and other severe environmental issues. Biological N removal via heterotrophic nitrification and aerobic denitrification (HN-AD) has drawn particular attention, owing to the ... ...

Abstract	Excessive nitrogen (N) discharged in water is a major cause of eutrophication and other severe environmental issues. Biological N removal via heterotrophic nitrification and aerobic denitrification (HN-AD) has drawn particular attention, owing to the merit of concurrent nitrification and denitrification inside one cell. However, the mechanisms underlying N transformation during HN-AD remain unclear. In the present study, the HN-AD strain Pseudomonas sp. Y15 (Y15) was isolated to explore the N distribution and flow, based on stoichiometry and energetics. The total N removal efficiency by Y15 increased linearly with C/N ratio (in the range of 5-15) to ∼96.8%. Of this, ∼32.2% and ∼64.6% were transformed into gas-N and biomass-N, respectively. A new intracellular N metabolic bypass (NO → NO
MeSH term(s)	Nitrification ; Denitrification ; Pseudomonas/metabolism ; Nitrogen/metabolism ; Aerobiosis ; Nitrites
Chemical Substances	Nitrogen (N762921K75) ; Nitrites
Language	English
Publishing date	2023-11-04
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	205699-9
ISSN	1096-0953 ; 0013-9351
ISSN (online)	1096-0953
ISSN	0013-9351
DOI	10.1016/j.envres.2023.117595
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