Desiccation Stress Tolerance in Porphyra and Pyropia Species: A Latitudinal Analysis along the Chilean Coast

Vista sencilla de ítem
dc.contributor.authorContreras-Porcia, Loretto
dc.contributor.authorMeynard, Andrés
dc.contributor.authorPiña, Florentina
dc.contributor.authorKumar, Manoj
dc.contributor.authorLovazzano, Carlos
dc.contributor.authorNúñez, Alejandra
dc.contributor.authorFlores-Molina, María Rosa
dc.date.accessioned2023-08-17T22:30:45Z
dc.date.available2023-08-17T22:30:45Z
dc.date.issued2022-12
dc.descriptionIndexación: Scopuses
dc.description.abstractOne of the most important factors regulating the distribution and abundance of seaweeds is desiccation, triggered mainly by tidal changes and climatic variation. Porphyra and Pyropia species have evolved multiple strategies to tolerate desiccation stress; however, how these tolerance strategies differ in these species inhabiting different latitudes is still unknown. In this context, we analyzed, in situ, the physiological responses of these species (collected from 18° S to 41° S along the Chilean coast) to desiccation stress using biochemical and molecular analyses. The hyper-arid terrestrial climate of northern Chile, with high evaporation and lack of constant rain determines a very steep increase in desiccation stress in the upper intertidal during low tide for these species. Accordingly, the results showed that, in comparison with the southernmost populations, the Porphyra/Pyropia species from the north zone of Chile (18°–30° S) exhibited higher contents of lipoperoxide and carbonyls (1.6–1.9 fold) together with higher enzymatic activities, including ascorbate peroxidase, catalase, peroxiredoxin, and thioredoxin (2–3-fold). In addition, a substantial expression of cat, prx, and trx transcripts during desiccation was demonstrated, mainly in the northernmost populations. These results provide evidence of (i) significant activation of antioxidant enzymes and transcripts (principally cat and prx); (ii) participation of phenolic antioxidant compounds as a highly plastic physiological strategy to cope with desiccation; and (iii) the activation of the tolerance responses was affected by species latitudinal distribution. Thus, for the first time, this study integrated the biochemical and genetic responses of diverse Porphyra/Pyropia species to better understand their physiological dynamics of tolerance over a wide latitudinal range. © 2022 by the authors.es
dc.description.urihttps://www.mdpi.com/2223-7747/12/1/12
dc.identifier.citationPlants Volume 12, Issue 1January 2023 Article number 12es
dc.identifier.doi10.3390/plants12010012
dc.identifier.issn2223-7747
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/52612
dc.language.isoenes
dc.publisherMDPIes
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectAntioxidantses
dc.subjectDesiccation stresses
dc.subjectLatitudinal distribution; Laveres
dc.subjectLuchees
dc.subjectNories
dc.subjectOcean warminges
dc.subjectOxidative stresses
dc.subjectReactive oxygen specieses
dc.subjectRed seaweedses
dc.titleDesiccation Stress Tolerance in Porphyra and Pyropia Species: A Latitudinal Analysis along the Chilean Coastes
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Contreras_L_Desiccation_Stress_Tolerance_in_Potphyra_2022_Article.pdf
Tamaño:
7.2 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
Fac.CV - Artículos de Revista