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dc.contributor.authorFernández-Naveira, Ánxela
dc.contributor.authorRioboo, Carmen
dc.contributor.authorCid, Ángeles
dc.contributor.authorHerrero, Concepción
dc.date.accessioned2016-09-06
dc.date.issued2016
dc.identifier.citationFernández-Naveira A, Rioboo C, Cid A & Herrero C. (2016) Atrazine induced changes in elemental and biochemical composition and nitrate reductase activity in Chlamydomonas reinhardtii. European Journal of Phycology, 51:338–345. doi: 10.1080/09670262.2016.1163737es_ES
dc.identifier.issn1469-4433
dc.identifier.urihttp://hdl.handle.net/2183/17260
dc.description.abstractHerbicides play an important role in agricultural practices but the introduction of these compounds into the aquatic environment can have severe consequences for non-target organisms such as microalgae. The ubiquitous green freshwater microalga Chlamydomonas reinhardtii, a model species in all aspects of microalgal physiology, was used to assess the toxicity of atrazine, one of the most widely used herbicides throughout the world. Atrazine acts on photosynthesis and therefore can affect non-target primary producers, such as microalgae. Growth, dry weight, elemental composition, photosynthetic pigments and protein contents and nitrate reductase activity were studied. After 96 h of exposure to different atrazine concentrations all the parameters studied were affected, but different sensitivities to the herbicide were shown. Nitrate reductase (NR) activity was strongly affected even at an atrazine concentration that did not affect growth (0.1 μM); the lowest concentrations of atrazine assayed (0.1 and 0.25 μM) provoked a > 40% decrease in NR activity and NR decreased > 80% with atrazine concentrations of 0.5 μM. C/N ratio was also affected by all the atrazine concentrations assayed. Nitrate reductase activity and C/N ratio were better indicators of the cellular stress state than data on other biochemical components or growth rate. Among cell parameters assayed, the NR activity stood out as a sensitive cytotoxicity endpoint and the activity of this enzyme can be suggested as a sensitive biomarker of stress induced by atrazine in C. reinhardtii.es_ES
dc.description.sponsorshipMinisterio de Economia y Competitividad; CGL2010-15993/BOSes_ES
dc.language.isoenges_ES
dc.publisherTaylor & Francises_ES
dc.relation.urihttp://dx.doi.org/10.1080/09670262.2016.1163737es_ES
dc.rightsThis is an Accepted Manuscript of an article published by Taylor & Francis in European Journal of Phycology on 06/05/2016, available online: http://www.tandfonline.com/10.1080/09670262.2016.1163737es_ES
dc.subjectAtrazinees_ES
dc.subjectChlamydomonas reinhardtiies_ES
dc.subjectNitrate reductasees_ES
dc.subjectToxicityes_ES
dc.titleAtrazine induced changes in elemental and biochemical composition and nitrate reductase activity in Chlamydomonas reinhardtiies_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessinfo:eu-repo/semantics/embargoedAccesses_ES
dc.date.embargoEndDate2017-03-03es_ES
dc.date.embargoLift2017-03-03
UDC.journalTitleJournal of Phycologyes_ES
UDC.volume51es_ES
UDC.issue3es_ES
UDC.startPage338es_ES
UDC.endPage345es_ES


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