The present invention provides the identification and use of EGTom1 and/or EGTom2, homologs of EGTom1 and/or EGTom2, orthologs of EGTom1 and/or EGTom2, paralogs of EGTom1 and/or EGTom2, and fragments and variations thereof for altering salt tolerance, drought tolerance and/or sugar content of fruit (sweetness) in plants.