Fecha de publicación: -- Fuente: WIPO "tomato" There is disclosed a mutant, non-naturally occurring or transgenic Nicotiana tabacum plant or part thereof having modulated expression or activity of lysine ketoglutarate reductase (LKR), said LKR comprising, consisting or consisting essentially of: (i) a polynucleotide(s) comprising, consisting or consisting essentially of a sequence having at least 88% sequence identity to the SEQ ID NO: 1 (NtLKR-S) and/or having at least 86% sequence identity to SEQ ID NO: 3 (NtLKR-T); (ii) a polypeptide(s) encoded by the polynucleotide(s) set forth in (i); (iii) a polypeptide(s) comprising, consisting or consisting essentially of a sequence having at least 89% sequence identity to SEQ ID NO: 2 (NtLKR-S) and/or having at least 88% sequence identity to SEQ ID NO: 4 (NtLKR-T); or (iv) a construct, vector or expression vector comprising the isolated polynucleotide(s) set forth in (i), wherein said plant or part thereof comprises at least one modification which is capable of modulating (a) the expression of the polynucleotide(s) in the plant or part thereof; or (b) the activity of the polypeptide(s) in the plant or part thereof, as compared to a control plant or part thereof in which the expression of the polynucleotide(s) or the activity of the polypeptide(s) has not been modified.