Selectable marker gene removal and expression of transgene by inducible promoter containing FFDD cis-acting elements in transgenic plants

ABSTRACT

Background: selectable marker gene [SMG] systems are critical for generation of transgenic crops. Transgenic crop production without using SMG is not economically feasible. However, SMGs are non-essential once an intact transgenic plant has been established. Elimination of SMGs from transgenic crops both increases public acceptance of GM crops and prepares gene stacking possibility for improvement of complex traits. Synthetic inducible promoters provide an efficient and flexible strategy to regulate transgene expression