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Shah, Vidhi
- Frequency-Dependent Response of Chromobacterium violaceum to Sonic Stimulation and Altered Gene Expression Associated with Enhanced Violacein Production at 300 Hz
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1 Institute of Science, Nirma University, Ahmedabad 382 481, IN
1 Institute of Science, Nirma University, Ahmedabad 382 481, IN
Source
Current Science, Vol 115, No 1 (2018), Pagination: 83-90Abstract
In this study, Chromobacterium violaceum was subjected to sonic (100–2000 Hz) stimulation. Sound waves of 300 Hz frequency promoted bulk production of the quorum-regulated pigment, violacein. Whole transcriptome analysis indicated that a total of 342 genes (i.e. 4.63% of the whole genome) were significantly upregulated in the sonic stimulated culture. Enhanced violacein production in the sound-stimulated culture seems to have stemmed from enhanced expression of the genes involved in pentose phosphate pathway, resulting in an increased availability of erythrose-4-phosphate to be used in the synthesis of tryptophan – the precursor of violacein synthesis. This study is a good demonstration of the ability of sound waves to alter bacterial metabolism.Keywords
Altered Gene Expression, Chromobacterium violaceum, Sonic Stimulation, Violacein.References
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