Perturbation of the ubiquitin system causes leaf curling, vascular tissue alterations and necrotic lesions in a higher plant.

@article{Bachmair1990PerturbationOT,
  title={Perturbation of the ubiquitin system causes leaf curling, vascular tissue alterations and necrotic lesions in a higher plant.},
  author={Andreas Bachmair and Frank Becker and Robert V. Masterson and J. L. Schell},
  journal={The EMBO journal},
  year={1990},
  volume={9 13},
  pages={4543-9}
}
A ubiquitin variant with Lys48 changed to Arg acts in vitro as an inhibitor of ubiquitin dependent protein degradation. To assess the role of this proteolytic pathway in the life cycle of plants, we expressed the ubiquitin variant in Nicotiana tabacum. Expression of variant mono- or polyubiquitin leads to marked abnormalities in vascular tissue. In addition, overexpression of variant polyubiquitin induces discrete lesions on leaves. This indicates that perturbations of the ubiquitin system can… CONTINUE READING

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