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dc.contributor.authorRomero-Aranda, María R.
dc.contributor.authorGonzález-Fernández, Paloma
dc.contributor.authorPérez-Tienda, Jacob R.
dc.contributor.authorLópez-Díaz, María R.
dc.contributor.authorEspinosa, Jesús
dc.contributor.authorGranum, Espen
dc.contributor.authorTraverso, Jose A.
dc.contributor.authorPineda, Benito
dc.contributor.authorGarcia-Sogo, Begona
dc.contributor.authorMoreno, Vicente
dc.contributor.authorAsins, María J.
dc.contributor.authorBelver, Andres
dc.date.accessioned2020-10-23T11:44:37Z
dc.date.available2020-10-23T11:44:37Z
dc.date.issued2020es
dc.identifier.citationRomero-Aranda, M. R., Fernández, P. G., López-Tienda, J. R., López-Diaz, M. R., Espinosa, J., Granum, E., ... & Asins, M. J. (2020). Na+ transporter HKT1; 2 reduces flower Na+ content and considerably mitigates the decline in tomato fruit yields under saline conditions. Plant Physiology and Biochemistry. 154, 341-352.es
dc.identifier.issn0981-9428
dc.identifier.urihttp://hdl.handle.net/20.500.11939/6681
dc.description.abstractGenes encoding HKT1-like Na+ transporters play a key role in the salinity tolerance mechanism in Arabidopsis and other plant species by retrieving Na+ from the xylem of different organs and tissues. In this study, we investigated the role of two HKT1;2 allelic variants in tomato salt tolerance in relation to vegetative growth and fruit yield in plants subjected to salt treatment in a commercial greenhouse under real production conditions. We used two near-isogenic lines (NILs), homozygous for either the Solanum lycopersicum (NIL17) or S. cheesmaniae (NIL14) allele, at HKT1;2 loci and their respective RNAi-Sl/ScHKT1;2 lines. The results obtained show that both ScHKT1;2- and SlHKT1;2-silenced lines display hypersensitivity to salinity associated with an altered leaf Na+/K+ ratio, thus confirming that HKT1;2 plays an important role in Na+ homeostasis and salinity tolerance in tomato. Both silenced lines also showed Na+ over-accumulation and a slight, but significant, reduction in K+ content in the flower tissues of salt-treated plants and consequently a higher Na+/K+ ratio as compared to the respective unsilenced lines. This altered Na+/K+ ratio in flower tissues is associated with a sharp reduction in fruit yield, measured as total fresh weight and number of fruits, in both silenced lines under salinity conditions. Our findings demonstrate that Na+ transporter HKT1;2 protects the flower against Na+ toxicity and mitigates the reduction in tomato fruit yield under salinity conditions.es
dc.language.isoenes
dc.publisherElsevieres
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectNa+ flower contentes
dc.subjectFruit yieldes
dc.subjectHKT1es
dc.subject2genees
dc.subjectK+ and Na+ homeostasises
dc.subjectSolanum cheesmaniaees
dc.titleNa+ transporter HKT1;2 reduces flower Na+ content and considerably mitigates the decline in tomato fruit yields under saline conditionses
dc.typearticlees
dc.authorAddressInstituto Valenciano de Investigaciones Agrarias (IVIA), Carretera CV-315, Km. 10’7, 46113 Moncada (Valencia), Españaes
dc.entidadIVIACentro de Protección Vegetal y Biotecnologíaes
dc.identifier.doi10.1016/j.plaphy.2020.05.012es
dc.identifier.urlhttps://www.sciencedirect.com/science/article/abs/pii/S0981942820302369es
dc.journal.issueNumber154es
dc.journal.titlePlant Physiology and Biochemistryes
dc.page.final352es
dc.page.initial341es
dc.rights.accessRightsopenAccesses
dc.source.typeelectronicoes
dc.subject.agrisF60 Plant physiology and biochemistryes
dc.subject.agrisF40 Plant ecologyes
dc.subject.agrovocSolanum lycopersicumes
dc.subject.agrovocTomatoeses
dc.subject.agrovocSalinityes
dc.type.hasVersionacceptedVersiones


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