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dc.contributor.authorAsins, María J.
dc.contributor.authorVillalta, Irene
dc.contributor.authorAly, Mohamed M.
dc.contributor.authorOlias, Raquel
dc.contributor.authorAlvarez De Morales, Paz
dc.contributor.authorHuertas, Raul
dc.contributor.authorLi, Jun
dc.contributor.authorJaime-Perez, Noelia
dc.contributor.authorHaro, Rosario
dc.contributor.authorRaga, Verónica
dc.contributor.authorCarbonell, Emilio A.
dc.contributor.authorBelver, Andres
dc.identifier.citationJ. Asins, M., Villalta, Irene, Aly, Mohamed M., Olias, Raquel, Alvarez De Morales, Paz, Huertas, Raul, Li, Jun, Jaime-Perez, Noelia, Haro, Rosario, Raga, Veronica, Carbonell, Emilio A., Belver, Andres (2013). Two closely linked tomato HKT coding genes are positional candidates for the major tomato QTL involved in Na+/K+ homeostasis. Plant Cell and Environment, 36(6), 1171-1191.
dc.description.abstractThe location of major quantitative trait loci (QTL) contributing to stem and leaf [Na+] and [K+] was previously reported in chromosome 7 using two connected populations of recombinant inbred lines (RILs) of tomato. HKT1;1 and HKT1;2, two tomato Na+-selective class I-HKT transporters, were found to be closely linked, where the maximum logarithm of odds (LOD) score for these QTLs located. When a chromosome 7 linkage map based on 278 single-nucleotide polymorphisms (SNPs) was used, the maximum LOD score position was only 35kb from HKT1;1 and HKT1;2. Their expression patterns and phenotypic effects were further investigated in two near-isogenic lines (NILs): 157-14 (double homozygote for the cheesmaniae alleles) and 157-17 (double homozygote for the lycopersicum alleles). The expression pattern for the HKT1;1 and HKT1;2 alleles was complex, possibly because of differences in their promoter sequences. High salinity had very little effect on root dry and fresh weight and consequently on the plant dry weight of NIL 157-14 in comparison with 157-17. A significant difference between NILs was also found for [K+] and the [Na+]/[K+] ratio in leaf and stem but not for [Na+] arising a disagreement with the corresponding RIL population. Their association with leaf [Na+] and salt tolerance in tomato is also discussed.
dc.titleTwo closely linked tomato HKT coding genes are positional candidates for the major tomato QTL involved in Na+/K+ homeostasis
dc.authorAddressInstituto Valenciano de Investigaciones Agrarias (IVIA), Carretera CV-315, Km. 10’7, 46113 Moncada (Valencia), Españaes 2013
dc.entidadIVIACentro de Citricultura y Producción Vegetal
dc.entidadIVIACentro de Protección Vegetal y Biotecnología
dc.journal.titlePlant Cell and Environment

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