Inhibition of Leaf Senescence by Autoregulated Production of Cytokinin

@article{Gan1995InhibitionOL,
  title={Inhibition of Leaf Senescence by Autoregulated Production of Cytokinin},
  author={Susheng Gan and Richard M. Amasino},
  journal={Science},
  year={1995},
  volume={270},
  pages={1986 - 1988}
}
Controlling expression of IPT, a gene encoding isopentenyl transferase (the enzyme that catalyzes the rate-limiting step in cytokinin biosynthesis), with a senescence-specific promoter results in the suppression of leaf senescence. Transgenic tobacco plants expressing this chimeric gene do not exhibit the developmental abnormalities usually associated with IPT expression because the system is autoregulatory. Because sufficient cytokinin is produced to retard senescence, the activity of the… 
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