Cured tobacco having a lower concentration of tobacco specific
nitrosamines, can be produced from a transgenic tobacco plant having a
heterologous nucleotide sequence encoding a polypeptide that catalyzes
production of active oxygen species. The heterologous nucleotide sequence
is operably coupled to a regulatory nucleotide sequence that directs
expression of the polypeptide. The regulatory nucleotide sequence can
include constitutive and/or inducible promoter elements.