The complex of signaling molecules and receptor proteins trigger the expression of specific genes responsible for various phenotypes including violacein pigment in Chromobacterium violaceum
(CviI/R), virulence factors production and biofilm formation in Pseudomonas aeruginosa (LasI/R).
The Chromobacterium violaceum
is a Gram-negative, free-living betaproteobacterium that dominates a variety of ecosystems in tropical and subtropical regions.
Phenolic components of ginger (Zingiber officinale), for example gingerol, shogaol and zingerone, have exhibited quorum-sensing inhibitory activity (QSI) against Chromobacterium violaceum
and Pseudomonas aeruginosa, (2) Chemical modification of shogaol to azashogaol and an isoxazoline derivative of gingerol were prepared, both of which exhibited good QSI activity.
Two different AHL biosensors strains were used to detect AHL-lactonase activity, Chromobacterium violaceum
CVO26 (mini Tn5 mutant of 31532) (McClean et al.
In addition to these species, several other aquatic bacteria have recently been identified as emerging causes of superficial and invasive infections following marine injuries and exposures, including marine mammal (dolphins and seals) Brucella species, Chromobacterium violaceum
, Comamonas species, Shewanella algae, and Streptococcus iniae.
Using as biosensor Chromobacterium violaceum
ATCC 31532 and Escherichia coli pSB403, the compounds chlorogenic acid (2), isoorientin (3), orientin (4), isovitexin (6), vitexin (7), and rutin (9) were identified as QS inhibitors.
The API profile from the pus isolate (1156154) initially suggested Chromobacterium violaceum
, a recognized misidentification of B.
is a gram-negative bacteria found in tropical regions.
We describe the case of a 14-year-old boy who was diagnosed with Chromobacterium violaceum
necrotizing fasciitis and subsequently found to have autosornal recessive chronic granulornatous disease.
Ralstonia paucula had the highest rate of multiple drug resistance and was resistant to 20 antibiotics at a time, followed by Chromobacterium violaceum
which was resistant to 18 antibiotics.
Sphingomonas paucimobilis, Cryseobacterium meningosepticum, Cryseobactenium indologenes, Flavimonas arzyihabitans, Flavobacterium odoratum, Aeromonas hydrophila, Chromobacterium violaceum
, tanimlanamayan nonfermentatif gram negatif basil, (3) Candida krusei, Candida tropicalis, Candida parapsilosis, Candida glabrata, Candida kefyr, Candida famata, Candida sake, Candida guilliermondii, Candida lusitaniae, Candida pelliculosa, Candida spp.
Evaluation of antiquorum-sensing activity of edible plants and fruits through inhibition of the N-acyl-homoserine Lactone System in Chromobacterium violaceum
and Pseudomonas aeruginosa.