tenuiflorus was evaluated against biomarker strain, Chromobacterium violaceum
(MTCC 2656) and test microrganism, P.
cepacia1 -- AAA50466.1 Vibrio cholerae 12129(1) EEN99655 Rhodoferax ferrireducens T118 WP_011465630.1 Myxococcus xanthus -- WP_011555480.1 Chromobacterium violaceum
ATCC12472 NP_902384.1 C.
Phenotypically, this isolate was identified as Chromobacterium violaceum
Violacein and related tryptophan metabolites produced by Chromobacterium violaceum
: biosynthetic mechanism and pathway for construction of violacein core.
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.
Hungria, "Diversity in antifungal activity of strains of Chromobacterium violaceum
from the Brazilian Amazon," Journal of Industrial Microbiology and Biotechnology, vol.
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 .
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].
Intrinsically resistant isolates of Proteus mirabilis, Burkholderia cepacia, and Chromobacterium violaceum
have modification in lipid A component of LPS in outer cell membrane resulting in reduced binding of polymyxins.
is ubiquitously present in the environment of tropical and subtropical regions .
Torres, "Characterization of Chromobacterium violaceum
pigment through a hyperspectral imaging system," AMB Express, vol.
Moreover, it has shown to inhibit the biofilms formation by Chromobacterium violaceum
, Typhimurium DT104, Salmonella enterica, and Staphylococcus aureus .