Vibrio species

Whiteleg shrimp (Litopenaeus vannamei) is now the main species cultivated in various geographic locations. Whiteleg shrimp have a wide range of salinity tolerance, but a matter of deficiency of minerals and trace elements need to be taken care of when shrimp are grown in low saline area.

9p vimulcahy 18-09-2023 8 3   Download

The SOS response is an almost ubiquitous response of cells to genotoxic stresses. The full complement of genes in the SOS regulon for Vibrio species has only been addressed through bioinformatic analyses predicting LexA binding box consensus and in vitro validation. Here, we perform whole transcriptome sequencing from Vibrio cholerae treated with mitomycin C as an SOS inducer to characterize the SOS regulon and other pathways affected by this treatment.

18p vibeauty 23-10-2021 11 0   Download

Bacteria are prey for many viruses that hijack the bacterial cell in order to propagate, which can result in bacterial cell lysis and death. Bacteria have developed diverse strategies to counteract virus predation, one of which is the clustered regularly interspaced short palindromic repeat (CRISPR) and CRISPR associated (Cas) proteins immune defense system.

23p vigiselle2711 30-08-2021 7 1   Download

Vibriosis has been implicated in major losses of larvae at shellfish hatcheries. However, the species of Vibrio responsible for disease in aquaculture settings and their associated virulence genes are often variable or undefined.

14p vijeeni2711 30-06-2021 8 1   Download

In this study, we (1) isolated V. parahaemolyticus from seawater samples collected in some regions in the north of Vietnam, (2) evaluated and selected the virulent strain, and (3) created an inactivated vaccine using a selected strain and finally tested the relative percentage survival (RPS) of the inactivated vaccine on tilapia (Oreochromis niloticus). Our study aims to develop an effective and commercially-potential vaccine to prevent damage of V. parahaemolyticus on fish farming, especially on species with high economic value.

8p koxih_kothogmih5 04-09-2020 36 1   Download

The aim of this work was to detect the presence of bacterial species in Yamuna river water from six different sites namely (S1) Mahewa Ghat, (S2) Gau Ghat, (S3) Old Naini Bridge, (S4) New Naini Bridge, (S5) Arail Ghat, (S6) Saraswati Ghat. Total 36 samples of water were used for isolation purpose. Salmonella were detected in 5 samples with highest ranking (13.9%). Salmonella spp. isolates belonged to the species S. typhi (two isolates), S. enterica, S. choleraesuis, S. gallinarum while Vibrio were detected in 4 samples (11.2%). Vibrio spp. isolates belonged to the following species V.

10p nguaconbaynhay6 23-06-2020 10 0   Download

Vibrio species are the major food borne pathogens commonly associated with aquatic food poisonings and lead to food-borne outbreaks. In this present study, out of 105 fresh water fish (Catlacatla) samples collected, 87 (82.85%) were found positive for Vibrio species. Out of 87, 6 (6.9%), 2 (2.3%), 4 (4.6%) and 3 (3.45%) isolates were found to be V. parahaemolyticus and V. vulnificus, V. alginolyticus and V. cholerae respectively by mPCR. The 15 different Vibrio species were subjected to antibiogram studies including ESBL detection.

9p trinhthamhodang5 16-05-2020 10 1   Download

The term ‘Vibriocin’ is specifically indicates the bacteriocin of Vibrio species. The present study reports the screening Vibriocin producing marine bacteria for food and aquaculture application. Out of 40 strains from Clam (Meretrix meretrix) species, screened against eight seafood borne pathogens, two Vibriocin producing bacteria were active against Staphylococcus aureus. Crude Vibriocin of these two isolates were subjected to salting-out for partial purification and exposed to different conditions i.e., pH, temperature and detergent for its antibacterial activity.

11p caygaocaolon2 11-03-2020 10 1   Download

Infectious diseases are quiet common in shrimp culture operations. Apart from infectious diseases certain syndromes affecting the culture operations in the shrimp farms particularly from Andhra Pradesh and Tamil Nadu. Running mortality syndrome is such type syndrome associated with morbidity and mortality which leads to less productivity. In the present study we have examined the haemolymph and hepatopacreas of the infected shrimps. The results revealed that, the affected shrimp showed the higher percentage of Vibrio species such as Vibrio parahaemolyticus and Vibrio azureus.

7p nguaconbaynhay3 07-02-2020 13 0   Download

Ship ballast water is a recognized medium for transfer and introductions of nonindigenous species. There is a need for new ballast water treatment methods that effectively and safely eliminate or greatly minimize movements of these species. The present study employed laboratory methods to evaluate the bactericidal efficacy of increased pH (pH 10.0–12.0) for exposure durations of up to 72 h to kill a variety of Gram-negative and Gram-positive bacteria including fish pathogens (Aeromonasspp., Yersinia ruckeri, Edwardsiella ictaluri, Serratia liquefaciens, Carnobacterium sp.

9p kethamoi1 17-11-2019 12 0   Download

The Na+-translocating NADH:quinone oxidoreductase (Na+-NQR) from Vibrio alginolyticus was inactivated by reactive oxygen species. Highest Na+-NQR activity was observed in anaerobically prepared membranes that exhibited 1 : 1 coupling of NADH oxidation and Q reduction activities (1.6 UÆmg)1). Optical and EPR spectroscopy documented the presence of b-type cytochromes, a [2Fe)2S] cluster and an organic radical signal in anaerobically pre- pared membranes from V. alginolyticus.

6p research12 01-06-2013 44 3   Download

The gene encoding a subtilisin-like serine proteinase in the psychrotrophic Vibriosp. PA44 has been successfully cloned, sequenced and expressed in Escherichia coli.The gene is 1593 basepairs and encodes a precursor protein of 530 amino acid residues with a calculated molecular mass of 55.7 kDa. The enzyme is isolated, however, as an active 40.6-kDa proteinase, without a 139amino acid residue N-terminal prosequence.

11p tumor12 22-04-2013 49 1   Download

The crystal structure of a subtilisin-like serine proteinase from the psychro-trophic marine bacterium, Vibriosp. PA-44, was solved by means of molecular replacement and refined at 1.84 A˚ . This is the first structure of a cold-adapted subtilase to be determined and its elucidation facilitates examination of the molecular principles underlying temperature adaptation in enzymes.

14p awards 05-04-2013 36 1   Download

Vibrio mimicusis a causative agent of human gastroenteritis and food poisoning, and this species produces an enterotoxic hemolysin (V. mimi-cus hemolysin) as a virulence determinant. Vibrio mimicushemolysin is secreted as an 80 kDa precursor, which is later converted to the 66 kDa mature toxin through removal of an N-terminal propeptide via cleavage of the Arg151–Ser152 bond.

10p vinaphone15 27-02-2013 34 2   Download

The RNA degradosome is built on the C-terminal half of ribonuclease E (RNase E) which shows high sequence variation, even amongst closely related species. This is intriguing given its central role in RNA processing and mRNA decay. Previously, we have identified RhlB (ATP-dependent DEAD-box RNA helicase)-binding

13p viettel02 19-02-2013 25 1   Download

Members of the genus Vibrio cause a number of important infectious syndromes. Classic among them is cholera, a devastating diarrheal disease caused by V. cholerae that has been responsible for seven global pandemics and much suffering over the past two centuries. Epidemic cholera remains a significant public health concern in the developing world today. Other vibrioses caused by other Vibrio species include syndromes of diarrhea, soft tissue infection, or primary sepsis. All Vibrio species are highly motile, facultatively anaerobic, curved gram-negative rods with one or more flagella.

15p crazy_sms 08-05-2012 51 4   Download

Bacteria of the genus Campylobacter and of the related genera Arcobacter and Helicobacter (Chap. 144) cause a variety of inflammatory conditions. Although acute diarrheal illnesses are most common, these organisms may cause infections in virtually all parts of the body, especially in compromised hosts, and these infections may have late nonsuppurative sequelae. The designation Campylobacter comes from the Greek for "curved rod" and refers to the organism's vibrio-like morphology. Etiology Campylobacters are motile, non-spore-forming, curved, gram-negative rods. ...

8p crazy_sms 08-05-2012 48 3   Download

Chất độc tetrodotoxin (TTX) có công thức phân tử là C11 H17 O8 N3, là chất độc thần kinh, rất độc, gây tử vong cao, chất này cũng được phân lập từ một số loại vi khuẩn: epiphytic bacterium, phảy khuẩn (vibrio species), pseudomonas species, ở da và nội tạng con sa giông, kỳ nhông, bạch tuộc vòng xanh, cóc, cá nóc.

16p heoxinhkute7 24-12-2010 289 61   Download

Table 40-2 Association between Pathobiology of Causative Agents and Clinical Features in Acute Infectious Diarrhea Pathobiolo gy/Agents bation Incu miting Vo Abd ominal Pain ever F rrhea Dia Period Toxin producers Preforme d toxin Bacillus cereus, Staphylococcus aureus, h 1–8 4+ 3– 1–2+ –1+ 0 4+, watery 3– Clostridi um perfringens h 8–24 Enterotox in Vibrio cholerae, enterotoxigenic Escherichia coli, Klebsiella pneumoniae, Aeromonas h 8–72 4+ 2– 1–2+ –1+ 0 4+, watery 3– species Enteroadhe rent Enteropat hogenic and d 1–8 1+ 0– 1–3+ –2+ 0 2+, 1– enteroadh...

6p ongxaemnumber1 29-11-2010 76 4   Download