Epistatic interaction and functional compensation between the two tissue- and cell-specific sucrose synthase genes in maize.

@article{Chourey1994EpistaticIA,
  title={Epistatic interaction and functional compensation between the two tissue- and cell-specific sucrose synthase genes in maize.},
  author={Prem S. Chourey and Earl W. Taliercio},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1994},
  volume={91 17},
  pages={7917-21}
}
A tissue-specific epistatic mode of gene interaction was observed between molecularly homologous genes Sh1 and Sus1 (hereafter, Sh and Sus), encoding the sucrose synthase (SS) isozymes, SS1 and SS2, respectively. In Sh Sus genotype, both SS genes were expressed simultaneously and approximately equally in young seedlings; however, only the Sus-encoded SS2 protein was seen in the developing embryos. By contrast, the mutant sus genotype, lacking detectable levels of the SS2 protein in various… CONTINUE READING

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