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dc.contributor.authorAyo Millán, María Begoña
dc.contributor.authorTxakartegi, Aitziber
dc.contributor.authorBaña García, Zuriñe
dc.contributor.authorArtolozaga Bengoechera, Miren Itxaso
dc.contributor.authorIriberri Ramallo, Juan Antonio
dc.date.accessioned2014-03-31T16:46:33Z
dc.date.available2014-03-31T16:46:33Z
dc.date.issued2010-09
dc.identifier.citationInternational Microbiology 13(3) : 151-158 (2010)es
dc.identifier.issn1139-6709
dc.identifier.urihttp://hdl.handle.net/10810/11882
dc.description.abstractThis study investigated the generation of dissolved free amino acids (DFAA) by the bacterivorous flagellate Rhynchomonas nasuta when feeding on abundant prey. Specifically, it examined whether this flagellate protist exhibits a chemosensory response towards those amino acids. The concentrations of glycine and the and D-enantiomers of glutamate, serine, threonine, alanine, and leucine were determined in co-cultures of the flagellate and bacteria. Glycine, L- and D-alanine, and L-serine were found to accumulate under these conditions in amounts that correlated positively with flagellate abundance, suggesting that protists are involved in their generation. Investigations of the chemotactic response of young and old foraging protists to the same amino acids, offered in concentrations similar to those previously generated, showed that glycine elicited the strongest attraction in both age groups. Young protists were strongly attracted to all the assayed amino acids, whereas older protists maintained a high level of attraction only for glycine. These results suggest that glycine generated by protists actively grazing in bacterially enriched patches functions as an infochemical, signaling to foraging protists the presence of available prey in the aquatic environment.es
dc.description.sponsorshipSupported by grants from UPV-EHU GIU 07/30, MEC BOS2003-06211 and CTM2006-08023 to J.I., A.T. and Z.B. were supported by predoctoral grants from UPV-EHU.es
dc.language.isoenges
dc.publisherSpanish Society for Microbiologyes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectmicroscale nutrient patcheses
dc.subjectprotistses
dc.subjectreleasees
dc.subjectciliatees
dc.subjectphthaldialdehydees
dc.subjectchemoattractiones
dc.subjectderivatizationes
dc.subjecttetrahymenaes
dc.subjectpatchinesses
dc.subjectseawateres
dc.titleChemosensory response of marine flagellate towards L- and D- dissolved free amino acids generated during heavy grazing on bacteriaes
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holderThis work, including photographs and other illustrations, unless the contrary is indicated, is subject to an Attributions–Non-Commercial–ShareAlike 3.0 Creative Commons License, the full text of which can be consulted at http://creativecommons.org/licenses/by-nc-sa/3.0/. You are free to share, copy, distribute and transmit the work provided that the author is credited and reuse of the material is restricted to non-commercial purposes only and that if you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.es
dc.relation.publisherversionhttp://revistes.iec.cat/index.php/IM/article/view/26118/pdf_45es
dc.identifier.doi10.2436/20.1501.01.120
dc.departamentoesInmunología, microbiología y parasitologíaes_ES
dc.departamentoeuImmunologia, mikrobiologia eta parasitologiaes_ES
dc.subject.categoriaMEDICINE


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