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Journal of Chemistry
Volume 2015 (2015), Article ID 296231, 4 pages
Research Article

Chemotaxis Away from 4-Chloro-2-nitrophenol, 4-Nitrophenol, and 2,6-Dichloro-4-nitrophenol by Bacillus subtilis PA-2

1School of Biotechnology, Yeungnam University, Gyeongsan 712-749, Republic of Korea
2National Institute of Agricultural Biotechnology, Rural Development Administration, Suwon 441-707, Republic of Korea

Received 9 October 2014; Revised 15 January 2015; Accepted 19 January 2015

Academic Editor: Jorge Barros-Velázquez

Copyright © 2015 Pankaj Kumar Arora et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Bacterial strain PA-2 exhibits chemotaxis away from 4-chloro-2-nitrophenol, 4-nitrophenol, and 2,6-dichloro-4-nitrophenol. This strain was identified as Bacillus subtilis on the basis of the 16S rRNA gene sequencing. The drop plate assay and the chemical-in-plug method were used to demonstrate negative chemotactic behavior of strain PA-2. The growth studies showed that strain PA-2 did not utilize 4-chloro-2-nitrophenol, 4-nitrophenol, and 2,6-dichloro-4-nitrophenol as its sole sources of carbon and energy. This is the first report of negative chemotaxis of 4-chloro-2-nitrophenol, 4-nitrophenol, and 2,6-dichloro-4-nitrophenol by any bacterium.