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A REGULATORY ROLE OF NAD REDOX STATUS ON FLAVIN COFACTOR HOMEOSTASIS IN S. cerevisiae MITOCHONDRIA
Programmed cell death in Daucus carota cell lines showing reduced expression of the top1b gene
Redox regulation in plant programmed cell death
Programmed cell death (PCD) is a genetically controlled
process described both in eukaryotic and prokaryotic
organisms. Even if it is clear that PCD occurs in plants, in
response to various developmental and environmental
stimuli, the signalling pathways involved in the triggering of
this cell suicide remain to be characterized. In this review,
the main similarities and differences in the players involved
in plant and animal PCD are outlined. Particular attention
is paid to the role of reactive oxygen species (ROS) as key
inducers of PCD in plants. The involvement of different
kinds of ROS, different sites of ROS production, as well as
their interaction with other molecules, is crucial in activating
PCD in response to specific stimuli. Moreover, the
importance is stressed on the balance between ROS production
and scavenging, in various cell compartments, for
the activation of specific steps in the signalling pathways
triggering this cell suicide process. The review focuses on
the complexity of the interplay between ROS and antioxidant
molecules and enzymes in determining the most suitable
redox environment required for the occurrence of
different forms of PCD
Changes in the ascorbate metabolism of Daucus carota cell lines showing reduced expression of the top1b gene.
Changes in ROS scavenger systems in Daucus carota cell lines showing reduced expression of the top1b gene
Changes in the ascorbate metabolism during programmed cell death and moderate oxidative stress in TBY-2 cells
Relationships between NAD redox status and FAD degradation in S. cerevisiae mitochondria.
Different involvement of the mitochondrial, plastidial and cytosolic ascorbate-glutathione redox enzymes in heat shock responses
Alterazioni del metabolismo dell'ascorbato e morte cellulare programmata in cellule di Daucus carota con ridotta espressione del gene top1
II° Incontro di Bertinoro, Società Italiana di Fisiologia Vegetale, 30 Giugno-1 Luglio
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