Perturbation of the ubiquitin system causes leaf curling, vascular tissue alterations and necrotic lesions in a higher plant.
AUTOR(ES)
Bachmair, A
RESUMO
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 induce a programmed necrotic response in plants.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=552251Documentos Relacionados
- Light-regulated, tissue-specific immunophilins in a higher plant.
- Glucose Dissimilation in the Higher Plant. Effect of Age of Tissue. 12
- Pyridine Nucleotide Content in the Higher Plant. Effect of Age of Tissue 12
- Targeting of glyoxysomal proteins to peroxisomes in leaves and roots of a higher plant.
- Photosynthetic Gene Expression in Meristems and during Initial Leaf Development in a C4 Dicotyledonous Plant.