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Article: Microbial respiratory quinones as indicator of ecophysiological redox conditions

TitleMicrobial respiratory quinones as indicator of ecophysiological redox conditions
Authors
KeywordsBacterial metabolism
Ecophysiology
Electron acceptor
Phospholipid fatty acid (PLFA)
Redox potential
Respiratory quinone
Issue Date2010
PublisherGaodeng Jiaoyu Chubanshe. The Journal's web site is located at http://www.springer.com/earth+sciences/journal/11707
Citation
Frontiers Of Earth Science In China, 2010, v. 4 n. 2, p. 195-204 How to Cite?
AbstractThe bacterial respiratory quinones and membrane phospholipid fatty acids (PLFA) were measured to test the biochemical responses to the redox conditions after the respiration of diverse electron acceptors by microorganisms. Shewanella putrefaciens strain CN32 was examined for its growth with O2, nitrate, ferrihydrite, ferric citrate, and sulfite as electron acceptors. The same parameters were also measured for Desulfovibrio desulfuricans strain G-20, Geobacter metallireducens strain GS-15, Thioploca spp., two strains of magnetotactic bacteria (Magneteospirilum magnetotactium marine vibrioid strain MV-1 and M. sp. strain AMB-1), and environmental sediments. Microorganisms with aerobic respiratory of oxygen (MV-1 and AMB-1) have high ratios of monounsaturated to saturated straight chain PLFA and ubiquinone to menaquinone ratios; while those that conduct strict anaerobic respirations (G-20 with sulfate and GS-15 with ferric iron) have low ratios of monounsaturated to saturated straight chain PLFA and uniquinone to menaquinone ratios. The facultative respiratory of nitrate (Thioploca) has these parameters in the middle. The ratios of menaquinones to ubiquinones in CN32 cells systematically increase according to the increase of redox potential and bioavalibility of electron acceptors. The correlation between σUQ-n/σMK-n ratios and redox conditions indicates the structure of respiratory quinone responses sensitively to the microbial ecophysiological conditions. © 2010 Higher Education Press and Springer Berlin Heidelberg.
Persistent Identifierhttp://hdl.handle.net/10722/124647
ISSN
2015 SCImago Journal Rankings: 0.424
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Yen_HK
dc.date.accessioned2010-10-31T10:46:16Z-
dc.date.available2010-10-31T10:46:16Z-
dc.date.issued2010en_HK
dc.identifier.citationFrontiers Of Earth Science In China, 2010, v. 4 n. 2, p. 195-204en_HK
dc.identifier.issn1673-7385en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124647-
dc.description.abstractThe bacterial respiratory quinones and membrane phospholipid fatty acids (PLFA) were measured to test the biochemical responses to the redox conditions after the respiration of diverse electron acceptors by microorganisms. Shewanella putrefaciens strain CN32 was examined for its growth with O2, nitrate, ferrihydrite, ferric citrate, and sulfite as electron acceptors. The same parameters were also measured for Desulfovibrio desulfuricans strain G-20, Geobacter metallireducens strain GS-15, Thioploca spp., two strains of magnetotactic bacteria (Magneteospirilum magnetotactium marine vibrioid strain MV-1 and M. sp. strain AMB-1), and environmental sediments. Microorganisms with aerobic respiratory of oxygen (MV-1 and AMB-1) have high ratios of monounsaturated to saturated straight chain PLFA and ubiquinone to menaquinone ratios; while those that conduct strict anaerobic respirations (G-20 with sulfate and GS-15 with ferric iron) have low ratios of monounsaturated to saturated straight chain PLFA and uniquinone to menaquinone ratios. The facultative respiratory of nitrate (Thioploca) has these parameters in the middle. The ratios of menaquinones to ubiquinones in CN32 cells systematically increase according to the increase of redox potential and bioavalibility of electron acceptors. The correlation between σUQ-n/σMK-n ratios and redox conditions indicates the structure of respiratory quinone responses sensitively to the microbial ecophysiological conditions. © 2010 Higher Education Press and Springer Berlin Heidelberg.en_HK
dc.languageengen_HK
dc.publisherGaodeng Jiaoyu Chubanshe. The Journal's web site is located at http://www.springer.com/earth+sciences/journal/11707en_HK
dc.relation.ispartofFrontiers of Earth Science in Chinaen_HK
dc.subjectBacterial metabolismen_HK
dc.subjectEcophysiologyen_HK
dc.subjectElectron acceptoren_HK
dc.subjectPhospholipid fatty acid (PLFA)en_HK
dc.subjectRedox potentialen_HK
dc.subjectRespiratory quinoneen_HK
dc.titleMicrobial respiratory quinones as indicator of ecophysiological redox conditionsen_HK
dc.typeArticleen_HK
dc.identifier.emailLi, Y:yiliang@hkucc.hku.hken_HK
dc.identifier.authorityLi, Y=rp01354en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11707-010-0019-3en_HK
dc.identifier.scopuseid_2-s2.0-77952242896en_HK
dc.identifier.hkuros176170en_HK
dc.identifier.hkuros178562-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77952242896&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume4en_HK
dc.identifier.issue2en_HK
dc.identifier.spage195en_HK
dc.identifier.epage204en_HK
dc.identifier.eissn1673-7490-
dc.identifier.isiWOS:000208725600008-
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridLi, Y=27171876700en_HK
dc.identifier.citeulike6975623-

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