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KMID : 0380020130280020146
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Korean Journal of Biotechnology and Bioengineering
2013 Volume.28 No. 2 p.146 ~ p.150
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Response of Shewanella oneidensis MR-1 to Longterm Exposure with Toxic Ionic Liquid: Comparative Studies on MR-1 and SH-1, an Acclimated Strain
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Han Sang-Hyun
Kang Chang-Ho
Kwak Dae-Yung
Ha Sung-Ho
Koo Yoon-Mo
So Jae-Seong
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Abstract
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In this study, we investigated the effects of longterm exposure to ionic liquid (IL) on Shewanella oneidensis MR-1 (MR-1). MR1 was acclimated through repeated exposure to IL. The acclimated strain was named as S. oneidensis SH-1 (SH-1) and compared with MR-1 in various aspects including morphology, cell surface hydrophobicity (CSH), motility, and fatty acid. Compared to the MR-1, SH-1 showed elongated cell shape on scanning electron microscopy. Upon exposure to IL, hydrophobicity of SH-1 (28.2%) was higher that of MR-1 (3.3%). In contrast, motility of SH-1 (7 mm) was lower than that also of MR-1 (22 mm), and branched chain fatty acid of SH-1 was lower than that of MR-1, 27.6% and 41.1%, respectively.
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KEYWORD
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Shewanella oneidensis MR-1, Ionic Liquid, Acclimation, Comparative Study
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