We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Soluble Carbohydrates as Osmolytes in Several Halophytes from a Mediterranean Salt Marsh.
- Authors
Gil, Ricardo; Lull, Cristina; Boscaiu, Monica; Bautista, Inmaculada; Lidón, Antonio; Vicente, Oscar
- Abstract
Compartmentalization of toxic ions in the vacuole and accumulation of osmolytes in the cytoplasm is a common response of halophytes to high soil salinity. Soluble carbohydrates, such as sugars and polyols, are some of the compatible solutes used for osmotic adjustment and osmoprotection. Major carbohydrates were identified and quantified by high-performance anion-exchange chromatography, combined with pulsed amperometric detection (HPAEC-PAD), in five halophytic species from a Mediterranean salt marsh (Juncus acutus, Juncus maritimus, Plantago crassifolia, Inula crithmoides and Sarcocornia ruticosa). Sucrose, followed by glucose and fructose were the more representative sugars detected in J. acutus and J. maritimus, and sorbitol the only soluble carbohydrate present at significant levels in P. crassifolia. In the other two taxa analyzed, no clearly predominant carbohydrates were observed: polyols (myoinositol and glycerol) seemed to be the most representative in I. crithmoides, albeit at relatively low concentrations, and sugars (sucrose and glucose) in S. ruticosa. Multivariate statistical analysis was used to correlate soil properties and meteorological conditions increasing soil salinity, with seasonal changes in carbohydrate contents, to establish their possible function as osmolytes and their contribution to salt tolerance in the investigated species. The obtained results confirmed sorbitol as the major functional osmolyte in P. crassifolia-as it has been described previously for other species of the genus-and suggested the participation of sucrose and, to a lesser extent, glucose and fructose in osmoregulatory mechanisms in J. acutus and J. maritimus.
- Subjects
CARBOHYDRATES; HALOPHYTES; SALT marshes; POLYOLS; PLANT vacuoles; CYTOPLASM; SOIL salinity; CHROMATOGRAPHIC analysis
- Publication
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2011, Vol 39, Issue 2, p9
- ISSN
0255-965X
- Publication type
Article
- DOI
10.15835/nbha3927176