Adjustment of pigment composition in Desmarestia (Desmarestiaceae) species along a sub-Antarctic to Antarctic latitudinal gradient

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dc.contributor.authorMansilla, Andrés
dc.contributor.authorMéndez, Fabio
dc.contributor.authorMurcia, Silvia
dc.contributor.authorRodríguez, Juan Pablo
dc.contributor.authorMarambio, Johanna
dc.contributor.authorRosenfeld, Sebastián
dc.contributor.authorYokoya, Nair
dc.contributor.authorBischof, Kai
dc.coverage.spatialPenínsula antárticaspa
dc.coverage.spatialCanal Beaglespa
dc.date.accessioned2017-03-03T19:51:42Z
dc.date.available2017-03-03T19:51:42Z
dc.date.issued2016
dc.description.abstractPhotosynthesis at high latitudes demands efficient strategies of light utilization to maintain algal fitness and performance. The fitness, and physiological adaptation, of a plant or algae species depends in part on the abundance and efficiency of the pigments it can produce to utilize the light resource from its environment. We quantified pigment composition and concentration in six species of the brown macroalgal genus Desmarestia, collected from sub- Antarctic sites (Strait of Magellan, Beagle Channel Cape Horn Province) and sites on the Antarctic Peninsula and adjacent islands. Sub-Antarctic Desmarestia species exhibited lower concentrations of chlorophyll a, chlorophyll c and fucoxanthin than endemic Antarctic species. Antarctic samples of D. menziesii and D. antarctica collected along a decreasing latitudinal gradient showed spatial and interspecific differences in light-harvesting pigment composition. Our results suggest distinct physiological adjustments in Desmarestia species in response to heterogeneous abiotic environmental conditions. The marine sub- Antarctic and Antarctic ecosystems are characterized by harsh environments (e.g., extreme irradiance, photoperiod, temperature, salinity) to which the physiology of macroalgal species must adapt.es_ES
dc.identifier.citationPolar Research, 35:1, 29383, DOI: 10.3402/polar.v35.29383es_ES
dc.identifier.issn1751-8369
dc.identifier.otherDOI: 10.3402/polar.v35.29383
dc.identifier.urihttp://hdl.handle.net/20.500.11894/854
dc.language.isoenes_ES
dc.publisherTaylor & Francis Groupes_ES
dc.relation.ispartofPolar Researches_ES
dc.rightsCreative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.es_ES
dc.subjectMacroalgases_ES
dc.subjectFotosíntesises_ES
dc.subjectFisiologíaes_ES
dc.subjectCienciaes_ES
dc.subjectPhaeophyceaees_ES
dc.titleAdjustment of pigment composition in Desmarestia (Desmarestiaceae) species along a sub-Antarctic to Antarctic latitudinal gradientes_ES
dc.typeArtículoes_ES

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