Molecular characterisation of a calmodulin gene, VcCaM1, that is differentially expressed under aluminium stress in highbush blueberry

Simple item page
dc.contributor.authorInostroza Blancheteau, C.
dc.contributor.authorAquea, F.
dc.contributor.authorLoyola, R.
dc.contributor.authorSlovin, J.
dc.contributor.authorJosway, S.
dc.contributor.authorRengel, Z.
dc.contributor.authorReyes Diaz, M.
dc.contributor.authorAlberdi, M.
dc.contributor.authorArce Johnson, P.
dc.date2013
dc.date.accessioned2021-04-30T17:05:05Z
dc.date.available2021-04-30T17:05:05Z
dc.description.abstractCalmodulin (CaM), a small acidic protein, is one of the best characterised Ca2+ sensors in eukaryotes. This Ca2+-regulated protein plays a critical role in decoding and transducing environmental stress signals by activating specific targets. Many environmental stresses elicit changes in intracellular Ca2+ activity that could initiate adaptive responses under adverse conditions. We report the first molecular cloning and characterisation of a calmodulin gene, VcCaM1 (Vaccinium corymbosum Calmodulin 1), in the woody shrub, highbush blueberry. VcCaM1 was first identified as VCAL19, a gene induced by aluminium stress in V.corymbosum L. A full-length cDNA of VcCaM1 containing a 766-bp open reading frame (ORF) encoding 149 amino acids was cloned from root RNA. The sequence encodes four Ca2+-binding motifs (EF-hands) and shows high similarity (99%) with the isoform CaM 201 of Daucus carota. Expression analyses showed that following Al treatment, VcCaM1 message level decreased in roots of Brigitta, an Al-resistant cultivar, and after 48h, was lower than in Bluegold, an Al-sensitive cultivar. VcCAM1 message also decreased in leaves of both cultivars within 2h of treatment. Message levels in leaves then increased by 24h to control levels in Brigitta, but not in Bluegold, but then decreased again by 48h. In conclusion, VcCaM1 does not appear to be directly involved in Al resistance, but may be involved in improved plant performance under Al toxicity conditions through regulation of Ca2+ homeostasis and antioxidant systems in leaves.
dc.identifier.citationPLANT BIOLOGY,Vol.15,1013-1018,2013
dc.identifier.doi10.1111/j.1438-8677.2012.00722.x
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3947
dc.language.isoen
dc.publisherWILEY
dc.sourcePLANT BIOLOGY
dc.subject.englishAbiotic stress
dc.subject.englishcalcium
dc.subject.englishgene expression
dc.subject.englishqRT-PCR
dc.subject.englishRACE
dc.subject.englishVaccinium corymbosum
dc.titleMolecular characterisation of a calmodulin gene, VcCaM1, that is differentially expressed under aluminium stress in highbush blueberry
dc.typeArticle
uct.catalogadorWOS
uct.indizacionSCI
Files
Collections
MigraciĆ³n Web of Science