Differential accumulation of dehydrin-like proteins by abiotic stresses in Deschampsia antarctica Desv.

dc.creatorOlave-Concha, N.
dc.creatorBravo, L.A.
dc.creatorRuíz-Lara, S.
dc.creatorCorcuera, L.J.
dc.date2005-10-05T23:51:03Z
dc.date2005-10-05T23:51:03Z
dc.date2005-06
dc.identifierPolar Biology 28 (7): 506-513
dc.identifier0722-4060
dc.identifierhttp://dspace.utalca.cl/handle/1950/1533
dc.descriptionRuiz-Lara, S. Instituto de Biología Vegetal y Biotecnología, Universidad de Talca, Casilla 747, Talca, Chile
dc.descriptionDehydrins are proteins that accumulate during environmental stresses leading to cell dehydration. Deschampsia antarctica is one of the two vascular plants that have colonized the Maritime Antarctic. This plant is usually exposed to cold, salt and desiccating winds in the field. We proposed that among the factors that allow D. antarctica to survive the harsh environmental conditions is the presence of dehydrins. We studied the accumulation of dehydrins by abscisic acid (ABA), dehydration, NaCl and low osmotic potential. Western blots using an anti-dehydrin antibody revealed a complex pattern of dehydrin-like proteins (DLPs) accumulation in the different treatments. DLPs with apparent molecular weight of 58, 57, 55, 53, 48, 42, 32, 30, 28 and 25 kDa were detected in the different treatments. DLPs accumulation was associated with a decrease in the relative water content (RWC) of the plants. These results suggest that DLPs accumulation could contribute to explain how D. antarctica can survive under adverse Antarctic conditions.
dc.descriptionhttp://dx.doi.org/10.1007/s00300-005-0718-5
dc.format1931 bytes
dc.formattext/html
dc.languageen
dc.publisherSpringer Berlin / Heidelberg
dc.subjectWater-Deficit
dc.subjectSignal-Transduction
dc.subjectLow-Temperature
dc.subjectOsmotic-Stress
dc.subjectAbscisic-Acid
dc.subjectReversible Photoinhibition
dc.subjectColobanthus-Quitensis
dc.subjectFreezing Tolerance
dc.subjectCold-Acclimation
dc.subjectVascular Plants
dc.titleDifferential accumulation of dehydrin-like proteins by abiotic stresses in Deschampsia antarctica Desv.
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución