Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation

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"The presence of sulfated polysaccharides in cell walls of seaweeds is considered to be a consequence of the physiological adaptation to the high salinity of the marine environment. Recently, it was found that sulfated polysaccharides were present in certain freshwater Cladophora species and so...

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Autores principales: Arata, Paula X., Alberghina, Josefina, Confalonieri, Viviana, Errea, María Inés, Estévez, José M., Ciancia, Marina
Formato: Artículos de Publicaciones Periódicas publishedVersion
Lenguaje:Inglés
Publicado: 2019
Materias:
POLISACARIDOS
MACROALGA
AGUA DULCE
CLADOPHORA SURERA
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/1632
Aporte de:
Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-1632
record_format dspace
spelling I32-R138-123456789-16322022-12-07T13:06:25Z Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation Arata, Paula X. Alberghina, Josefina Confalonieri, Viviana Errea, María Inés Estévez, José M. Ciancia, Marina POLISACARIDOS MACROALGA AGUA DULCE CLADOPHORA SURERA "The presence of sulfated polysaccharides in cell walls of seaweeds is considered to be a consequence of the physiological adaptation to the high salinity of the marine environment. Recently, it was found that sulfated polysaccharides were present in certain freshwater Cladophora species and some vascular plants. Cladophora (Ulvophyceae, Chlorophyta) is one of the largest genera of green algae that are able to grow in both, seas and freshwater courses. Previous studies carried out on the water-soluble polysaccharides of the marine species C. falklandica established the presence of sulfated xylogalactoarabinans constituted by a backbone of 4-linked b-L-arabinopyranose units partially sulfated mainly on C3 and also on C2 with partial glycosylation, mostly on C2, with terminal b-D-xylopyranose or b-D-galactofuranose units. Besides, minor amounts of 3-, 6- and/or 3,6-linked b-D-galactan structures, with galactose in the pyranosic form were detected. In this work, the main water soluble cell wall polysaccharides from the freshwater alga Cladophora surera were characterized. It was found that this green alga biosynthesizes sulfated polysaccharides, with a structure similar to those found in marine species of this genus. Calibration of molecular clock with fossil data suggests that colonization of freshwater environments occurred during the Miocene by its ancestor. Therefore, the presence of sulfated polysaccharides in the freshwater green macroalga C. surera could be, in this case, an adaptation to transient desiccation and changes in ionic strength. Retention of sulfated polysaccharides at the cell walls may represent a snapshot of an evolutionary event, and, thus constitutes an excellent model for further studies on the mechanisms of sulfation on cell wall polysaccharides and environmental stress co-evolution." 2019-06-24T17:08:15Z 2019-06-24T17:08:15Z 2017-11 Artículos de Publicaciones Periódicas info:eu-repo/semantics/publishedVersion 1664-462X http://ri.itba.edu.ar/handle/123456789/1632 en info:eu-repo/semantics/reference/doi/10.3389/fpls.2017.01927 info:eu-repo/grantAgreement/UBA/UBACyT/2014-2017/20020130100576BA/AR. Ciudad Autónoma de Buenos Aires info:eu-repo/grantAgreement/ANPCyT/PICT/2014-0504/AR. Ciudad Autónoma de Buenos Aires https://creativecommons.org/licenses/by/4.0/ application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic POLISACARIDOS
MACROALGA
AGUA DULCE
CLADOPHORA SURERA
spellingShingle POLISACARIDOS
MACROALGA
AGUA DULCE
CLADOPHORA SURERA
Arata, Paula X.
Alberghina, Josefina
Confalonieri, Viviana
Errea, María Inés
Estévez, José M.
Ciancia, Marina
Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
topic_facet POLISACARIDOS
MACROALGA
AGUA DULCE
CLADOPHORA SURERA
description "The presence of sulfated polysaccharides in cell walls of seaweeds is considered to be a consequence of the physiological adaptation to the high salinity of the marine environment. Recently, it was found that sulfated polysaccharides were present in certain freshwater Cladophora species and some vascular plants. Cladophora (Ulvophyceae, Chlorophyta) is one of the largest genera of green algae that are able to grow in both, seas and freshwater courses. Previous studies carried out on the water-soluble polysaccharides of the marine species C. falklandica established the presence of sulfated xylogalactoarabinans constituted by a backbone of 4-linked b-L-arabinopyranose units partially sulfated mainly on C3 and also on C2 with partial glycosylation, mostly on C2, with terminal b-D-xylopyranose or b-D-galactofuranose units. Besides, minor amounts of 3-, 6- and/or 3,6-linked b-D-galactan structures, with galactose in the pyranosic form were detected. In this work, the main water soluble cell wall polysaccharides from the freshwater alga Cladophora surera were characterized. It was found that this green alga biosynthesizes sulfated polysaccharides, with a structure similar to those found in marine species of this genus. Calibration of molecular clock with fossil data suggests that colonization of freshwater environments occurred during the Miocene by its ancestor. Therefore, the presence of sulfated polysaccharides in the freshwater green macroalga C. surera could be, in this case, an adaptation to transient desiccation and changes in ionic strength. Retention of sulfated polysaccharides at the cell walls may represent a snapshot of an evolutionary event, and, thus constitutes an excellent model for further studies on the mechanisms of sulfation on cell wall polysaccharides and environmental stress co-evolution."
format Artículos de Publicaciones Periódicas
publishedVersion
author Arata, Paula X.
Alberghina, Josefina
Confalonieri, Viviana
Errea, María Inés
Estévez, José M.
Ciancia, Marina
author_facet Arata, Paula X.
Alberghina, Josefina
Confalonieri, Viviana
Errea, María Inés
Estévez, José M.
Ciancia, Marina
author_sort Arata, Paula X.
title Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
title_short Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
title_full Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
title_fullStr Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
title_full_unstemmed Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
title_sort sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation
publishDate 2019
url http://ri.itba.edu.ar/handle/123456789/1632
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AT estevezjosem sulfatedpolysaccharidesinthefreshwatergreenmacroalgacladophorasureranotlinkedtosalinityadaptation
AT cianciamarina sulfatedpolysaccharidesinthefreshwatergreenmacroalgacladophorasureranotlinkedtosalinityadaptation
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