Seasonal Photoacclimation and Vulnerability Patterns in the Brown Macroalga Lessonia spicata (Ochrophyta)

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dc.contributor.authorZúñiga, Antonio
dc.contributor.authorSáez, Claudio A.
dc.contributor.authorTrabal, Andrés
dc.contributor.authorFigueroa, Félix L.
dc.contributor.authorPardo, Diego
dc.contributor.authorNavarrete, Camilo
dc.contributor.authorRodríguez-Rojas, Fernanda
dc.contributor.authorMoenne, Fabiola
dc.contributor.authorCelis-Plá, Paula S. M.
dc.date.accessioned2022-10-12T15:53:39Z
dc.date.available2022-10-12T15:53:39Z
dc.date.issued2020-12-23
dc.description.abstractFluctuations in solar radiation are one of the key factors affecting productivity and survival in habitat forming coastal macroalgae, in this regard, photoacclimation has a direct impact on the vulnerability and the capacity of seaweed to withstand, for instance, radiation excess. Here, we study ecophysiological responses through photosynthetic activity measurements under time-dependent (one year) fluctuations in solar radiation in the brown macroalga L. spicata. The responses presented seasonal patterns, with an increase in photosynthetic capacity during summer, expressed in greater maximal electron transport rate (ETRmax) and diminished thermal dissipation (NPQmax). Moreover, we studied photoprotective compounds (phenolic compounds) and total antioxidant capacity, which demonstrated an increase during periods of high solar radiation. In addition, content of photosynthetic pigment (Chla, Chlc and Carotenoids) increased under greater solar irradiance. The L. spicata can accumulate as reservoir photoprotective and antioxidant substances to withstand periods of high solar irradiance. All ecophysiological and biochemical responses in L. spicata indicate high photoacclimation and low vulnerability in the species, especially during with greater levels of solar irradiance.es_ES
dc.identifier.issn2073-4441
dc.identifier.other10.3390/w13010006
dc.identifier.urihttps://hdl.handle.net/20.500.12536/1836
dc.language.isoenes_ES
dc.sourceWateres_ES
dc.subjectLessonia spicataes_ES
dc.subjectBrown macroalgaees_ES
dc.subjectPhotoprotective compoundses_ES
dc.subjectAntioxidant capacityes_ES
dc.titleSeasonal Photoacclimation and Vulnerability Patterns in the Brown Macroalga Lessonia spicata (Ochrophyta)es_ES
dc.typeArtículo de revistaes_ES
uvm.carreraAgronomíaes_ES
uvm.escuelaEscuela de Ciencias Agrícolas y Veterinariases_ES
uvm.indexWoSes_ES
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