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Applied and Environmental Microbiology, March 2006, p. 2226-2230, Vol. 72, No. 3
0099-2240/06/$08.00+0     doi:10.1128/AEM.72.3.2226-2230.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Preferential Utilization of Aromatic Compounds over Glucose by Pseudomonas putida CSV86

Aditya Basu,1 Shree K. Apte,2 and Prashant S. Phale1*

Biotechnology Group, School of Biosciences and Bioengineering, Indian Institute of Technology—Bombay, Powai, Mumbai 400 076,1 Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India2

Received 25 October 2005/ Accepted 20 December 2005

Pseudomonas putida CSV86, a naphthalene-degrading organism, exhibited diauxic growth on aromatic compounds plus glucose, with utilization of aromatics in the first log phase and of glucose in the second log phase. Glucose supplementation did not suppress the activity of degrading enzymes, which were induced upon addition of aromatic compounds. The induction was inhibited by chloramphenicol, suggesting that de novo protein synthesis was essential. Cells showed cometabolism of aromatic compounds and organic acids; however, organic acids suppressed glucose utilization.

* Corresponding author. Mailing address: Biotechnology Group, School of Biosciences and Bioengineering, Indian Institute of Technology—Bombay, Powai, Mumbai 400 076, India. Phone: 91 22 2576 7836. Fax: 91 22 2572 3480. E-mail: pphale{at}iitb.ac.in.

Applied and Environmental Microbiology, March 2006, p. 2226-2230, Vol. 72, No. 3
0099-2240/06/$08.00+0     doi:10.1128/AEM.72.3.2226-2230.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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