Methylglyoxal metabolism in seaweeds during desiccation
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Archivos
Fecha
2016
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Valparaíso. Facultad de Ciencias del Mar
Nombre de Curso
Licencia CC
Licencia CC
Resumen
In primary producers, diverse stressors cause an over-production of methylglyoxal (MG), which is principally detoxified by glyoxalase I (GLO1) activity. A recent proteomic study found that GLO1 was up-regulated during natural desiccation in the red seaweed Pyropia orbicularis, which inhabits the upper intertidal rocky zone and compared to other species, is highly tolerant to air exposure. To better understand and determine differential responses to desiccation stress, this study evaluated MG concentration and GLO1 activity in two species with contrasted vertical distribution, P. orbicularis and Lessonia spicata (lower distribution). Results showed that P. orbicularis successfully scavenges MG via increased GLO1 activity during desiccation. In contrast, GLO1 activity in L. spicata did not increase during desiccation, resulting in MG overproduction. This study is the first to quantify MG and GLO1 levels in seaweeds during natural stress, and partly explain the mechanisms by which P. orbicularis is dominant in the upper rocky intertidal zone.
Notas
Indexación: Scielo; Web of Science.
Palabras clave
Methylglyoxal, Glyoxylase I, Pyropia, Lessonia, Desiccation
Citación
Rev. biol. mar. oceanogr. vol.51 no.1 Valparaíso Apr. 2016