Chromobacterium


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Chromobacterium

[¦krō·mō‚bak′tir·ē·əm]
(microbiology)
A genus of gram-negative, aerobic or facultatively anaerobic, motile, rod-shaped bacteria of uncertain affiliation; they produce violet colonies and violacein, a violet pigment with antibiotic properties.
References in periodicals archive ?
tenuiflorus was evaluated against biomarker strain, Chromobacterium violaceum (MTCC 2656) and test microrganism, P.
De todas las enzimas, las secuencias de Pseudomonas aeruginosa ATCC31156, Burkholderia glumae CBS322.89, Burkholderia cepacia, Chromobacterium viscosumATCC6918 son representativas de la familia I (Tabla 1).
Phenotypically, this isolate was identified as Chromobacterium violaceum.
and Chromobacterium spp., have gained great scientific and commercial interest due to the production of various metabolites acting as potent insecticides.
In Gram-negative bacteria, AHL-based QS regulates the production of violacein pigment (Chromobacterium violaceum), virulence factors (Pseudomonas aeruginosa), flagellar motility (Listeria monocytogenes), bioluminescence in Vibrio harveyi and Vibrio fischeri, sporulation, and development of mature biofilms through cell differentiation and community organization [6, 7].
Bacteria from which PHA genes are cloned are Paracoccus denitrificans, Rhodobacter capsulatus, Chromobacterium violaceum, Pseudomonas putida BM01, Methylobacterium extorquens, Comamonas acidovorans, Ectothiorhodospirashaposhnikovi, Synechocystis sp., and Zoogloea ramigera, respectively [31].
Many bacterial genera have been utilized as PGPR, including Agrobacterium, Arthrobacter, Azotobacter, Azospirillum, Bacillus, Burkholderia, Caulobacter, Chromobacterium, Erwinia, Flavobacterium, Micrococcus, Pseudomonas, and Serratia [4].
Chromobacterium violaceum ATCC12472 (biological method linked to pigment production) was used as a microbial reporter to identify QS inhibition in Gram-negative bacteria, while an Fe (III) reduction method (chemical assay) was used for Gram-positive bacteria.
The genus Chromobacterium, belonging to the class Beta-proteobacteria and family Chromobacteriaceae (formerly Neisseriaceae) [1], was originally proposed in 1881 by Bergonzini [2].
The cold-resistant bacteria in milk are predominated by Gram-negative genera (Pseudomonas, Achromobacter, Aeromonas, Serratia, Alcaligenes, Chromobacterium, and Flavobacterium spp.), and the lower numbers of Gram-positive genera (Bacillus, Clostridium, Corynebacterium, Streptococcus, Lactobacillus, and Microbacterium spp.) are usually distributed in milk [6].