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Nutrient limitation is the main regulatory factor for carotenoid accumulation and for Psy and Pds steady state transcript levels in Dunaliella salina (Chlorophyta) exposed to high light and salt stress

2008Journal article Restricted access
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dc.contributor.authorCoesel, Sacha
dc.contributor.authorBaumgartner, Alexandra
dc.contributor.authorTeles, Lícia
dc.contributor.authorRamos, Ana
dc.contributor.authorHenriques, Nuno
dc.contributor.authorCancela, Leonor
dc.contributor.authorVarela, J.
dc.date.accessioned2014-07-24T09:37:06Z
dc.date.available2014-07-24T09:37:06Z
dc.date.issued2008
dc.description.abstractDunaliella salina (Dunal) Teodoresco (1905) is a green unicellular alga able to withstand severe salt, light, and nutrient stress, adaptations necessary to grow in harsh environments such as salt ponds. In response to such growth conditions, this microalga accumulates high amounts of β-carotene in its single chloroplast. In this study, we show that carotenoid accumulation is consistently inhibited in cells grown in nutrient-supplemented media and exposed either to high-light or medium-low-light conditions. Likewise, carotenogenesis in cells shifted to higher salinity (up to 27% NaCl) under medium-low-light conditions is inhibited by the presence of nutrients. The steady-state levels of transcripts encoding phytoene syn- thase and phytoene desaturase increased substantially in D. salina cells shifted to high light or high salt under nutrient- limiting conditions, whereas the presence of nutrients inhibited this response. The regulatory effect of nutrient availability on the accumulation of carotenoids and mes- senger RNA levels of the first two enzymes committed to carotenoid biosynthesis is discussed.por
dc.description.sponsorshipFCTpor
dc.description.sponsorshipPRAXIS 4/4.1/; INTERREG 159-SAL - Atlantic Salt Ponds
dc.identifier.citationCoesel, S.N., L.M. Teles, A.C. Baumgartner, N.M. Henriques, L. Cancela, & J.C. Varela (2008). Nutrient limitation is the main regulatory factor for massive β-carotene accumulation and for Psy and Pds transcript levels in Dunaliella salina exposed to light and salt stress. Marine Biotechnology, 10: 602-611.por
dc.identifier.doi10.1007/s10126-008-9100-2
dc.identifier.otherAUT: JVA01305; AUT: LCA00739;
dc.identifier.urihttp://hdl.handle.net/10400.1/4839
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.relationREGULATION OF THE CAROTENOID BIOSYNTHETIC PATHWAY IN THE HALOTOLERANT MICROALGA DUNALIELLA SALINA
dc.relationMOLECULAR BASIS OF ISOPRENOID BIOSYNTHESIS IN DUNALIELLA SALINA
dc.relationMOLECULAR BIOLOGICAL AND BIOCHEMICAL STUDY OF POLYAMINE METABOLISM IN PLANTS
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs10126-008-9100-2por
dc.subjectDunaliella salinapor
dc.subjectMicroalgaepor
dc.subjectCarotenoidspor
dc.subjectBiosynthetic pathwaypor
dc.subjectNutrient limitationpor
dc.subjectPhytoene synthasepor
dc.subjectPhytoene desaturasepor
dc.titleNutrient limitation is the main regulatory factor for carotenoid accumulation and for Psy and Pds steady state transcript levels in Dunaliella salina (Chlorophyta) exposed to high light and salt stresspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleREGULATION OF THE CAROTENOID BIOSYNTHETIC PATHWAY IN THE HALOTOLERANT MICROALGA DUNALIELLA SALINA
oaire.awardTitleMOLECULAR BASIS OF ISOPRENOID BIOSYNTHESIS IN DUNALIELLA SALINA
oaire.awardTitleMOLECULAR BIOLOGICAL AND BIOCHEMICAL STUDY OF POLYAMINE METABOLISM IN PLANTS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F4839%2F2001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F13937%2F2003/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCTI/SFRH%2FBPD%2F3579%2F2000/PT
oaire.citation.endPage611por
oaire.citation.startPage602por
oaire.citation.titleMarine Biotechnologypor
oaire.citation.volume10por
oaire.fundingStreamPOCTI
person.familyNameRamos
person.familyNameCancela
person.familyNameVarela
person.givenNameAna
person.givenNameM. Leonor
person.givenNameJoão
person.identifier.ciencia-id761B-F84D-0CF5
person.identifier.orcid0000-0003-1099-4005
person.identifier.orcid0000-0003-3114-6662
person.identifier.orcid0000-0003-3101-693X
person.identifier.ridM-3815-2013
person.identifier.ridM-4223-2013
person.identifier.scopus-author-id55741416000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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