Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Cerdanyola, 08193, Barcelona, Spain. taltabella@ub.edu. Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain. taltabella@ub.edu. Laboratory of Cell Metabolism, Faculty of Chemistry, Autonomous University of Nuevo León, San Nicolás de los Garza, NL, 66451, México. Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Cerdanyola, 08193, Barcelona, Spain. albertferrer@ub.edu. Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain. albertferrer@ub.edu.