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Involvement of etfA gene during CaCO3 precipitation in Bacillus subtilis biofilm

Autordc.contributor.authorMarvasi, Massimiliano 
Autordc.contributor.authorCasillas Santiago, Lianne M. 
Autordc.contributor.authorHenríquez, Tania 
Autordc.contributor.authorCasillas Martínez, Lilliam 
Fecha de publicació
Cita de ítemdc.identifier.citationGeomicrobiology Journal, 34 (8): 722-728es_ES
Resumendc.description.abstractThe eftA gene in Bacillus subtilis has been suggested to be involved in the oxidation/reduction reactions during fatty acid metabolism. Interestingly etfA deletion in B. subtilis results in impairment in CaCO3 precipitation on the biofilm. Comparisons between the wild type B. subtilis 168 and its etfA mutant during in vitro CaCO3 crystal precipitation (calcite) revealed changes in phospholipids membrane composition with accumulation of up to 10% of anteiso-C-17:0 and 11% iso-C-17:0 long fatty acids. Ca2+ nucleation sites such as dipicolinic acid and teichoic acids seem to contribute to the CaCO3 precipitation. etfA mutant strain showed up to 40% less dipicolinic acid accumulation compared with B. subtilis 168, while a B. subtilis mutant impaired in teichoic acids synthesis was unable to precipitate CaCO3. In addition, B. subtilis etfA mutant exhibited acidity production leading to atypical flagella formation and inducing extensive lateral growth on the biofilm when grown on 1.4% agar. From the ecological point of view, this study shows a number of physiological aspects that are involved in CaCO3 organomineralization on biofilms.es_ES
Publicadordc.publisherTaylor & Francises_ES
Tipo de licenciadc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link a Licenciadc.rights.uri*
Fuentedc.sourceGeomicrobiology Journales_ES
Palabras clavesdc.subjectBacillus subtilises_ES
Palabras clavesdc.subjectBiofilmes_ES
Palabras clavesdc.subjectCalcium carbonatees_ES
Palabras clavesdc.subjectDipicolinic acides_ES
Palabras clavesdc.subjectetfAes_ES
Palabras clavesdc.subjectFAME analysises_ES
Palabras clavesdc.subjectTeichoic acidses_ES
Títulodc.titleInvolvement of etfA gene during CaCO3 precipitation in Bacillus subtilis biofilmes_ES
Tipo de documentodc.typeArtículo de revistaes_ES
Indizaciónuchile.indexArtículo de publicación ISIes_ES

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Attribution-NonCommercial-NoDerivs 3.0 Chile
Excepto si se señala otra cosa, la licencia del ítem se describe como Attribution-NonCommercial-NoDerivs 3.0 Chile