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

Artículo de Publicación Periódica:
Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation

dc.contributor.author	Arata, Paula X.
dc.contributor.author	Alberghina, Josefina
dc.contributor.author	Confalonieri, Viviana
dc.contributor.author	Errea, María Inés
dc.contributor.author	Estévez, José M.
dc.contributor.author	Ciancia, Marina
dc.date.accessioned	2019-06-24T17:08:15Z
dc.date.available	2019-06-24T17:08:15Z
dc.date.issued	2017-11
dc.description.abstract	"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."	en
dc.identifier.issn	1664-462X
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1632
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/reference/doi/10.3389/fpls.2017.01927
dc.relation	info:eu-repo/grantAgreement/UBA/UBACyT/2014-2017/20020130100576BA/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/ANPCyT/PICT/2014-0504/AR. Ciudad Autónoma de Buenos Aires
dc.rights	https://creativecommons.org/licenses/by/4.0/
dc.subject	POLISACARIDOS	es
dc.subject	MACROALGA	es
dc.subject	CLADOPHORA SURERA	la
dc.subject	AGUA DULCE	es
dc.title	Sulfated polysaccharides in the freshwater green macroalga cladophora surera not linked to salinity adaptation	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Arata, Paula X. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.
itba.description.filiation	Fil: Alberghina, Josefina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
itba.description.filiation	Fil: Confalonieri, Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
itba.description.filiation	Fil: Errea, María Inés. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Estévez, José M. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Ciancia, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Alberghina, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Confalonieri, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Estévez, José M. Fundación Instituto Leloir; Argentina.
itba.description.filiation	Fil: Ciancia, Marina. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.