منابع مشابه
Binding and glutathione conjugation of porphyrinogens by plant glutathione transferases.
Overexpression in Escherichia coli of a tau (U) class glutathione transferase (GST) from maize (Zea mays L.), termed ZmGSTU1, caused a reduction in heme levels and an accumulation of porphyrin precursors. This disruption was highly specific, with the expression of the closely related ZmGSTU2 or other maize GSTs having little effect. Expression in E. coli of a series of chimeric ZmGSTU1/ZmGSTU2 ...
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Chlorambucil (CMB), an anticancer drug, was cytotoxic at concentrations of 5-20 microM to human colon adenocarcinoma cells. It inhibited [14C]thymidine uptake in a dose-dependent manner. Both effects were potentiated by simultaneous exposure of the cells to 10 microM plant polyphenols. In an attempt to explain the possible mechanism of action of the polyphenols in relation to these observations...
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The ubiquitin-proteasome system (UPS) plays a role in nearly every aspect of plant biology. The wealth of emerging data demonstrates that regulated protein degradation rivals the well-studied area of transcriptional regulation for importance in cellular regulation. In this Update, we will highlight current research findings that illustrate the contributions of the UPS to phytohormone signaling....
متن کاملPlant hormone receptors: perception is everything.
Despite the bewildering ability of higher plants to change their development with respect to the environment, there appear to be only a few hormones that function to organize growth and development. With the recent identification of three plant hormone receptors, the molecular identities of all the major plant receptors are now known. Some plant hormones such as cytokinins, ethylene, and brassi...
متن کاملThe Action of the Plant Growth Hormone
1. Sections of Avena coleoptiles are found to show a considerable elongation when suspended in solutions of growth substance. 2. This elongation does not take place in the absence of O(2) and is inhibited by KCN and phenylurethane. 3. The rate of respiration of sections of coleoptiles is increased by the addition of growth substance in concentrations which cause growth. High concentrations of g...
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ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2009
ISSN: 1559-2324
DOI: 10.4161/psb.4.8.9180