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- W2082384602 abstract "Abstract Exposure to cadmium (Cd2+) can result in cell death, but the molecular mechanisms of Cd2+ cytotoxicity in plants are not fully understood. Here, we show that Arabidopsis (Arabidopsis thaliana) cell suspension cultures underwent a process of programmed cell death when exposed to 100 and 150 μ m CdCl2 and that this process resembled an accelerated senescence, as suggested by the expression of the marker senescence-associated gene12 (SAG12). CdCl2 treatment was accompanied by a rapid increase in nitric oxide (NO) and phytochelatin synthesis, which continued to be high as long as cells remained viable. Hydrogen peroxide production was a later event and preceded the rise of cell death by about 24 h. Inhibition of NO synthesis by N G-monomethyl-arginine monoacetate resulted in partial prevention of hydrogen peroxide increase, SAG12 expression, and mortality, indicating that NO is actually required for Cd2+-induced cell death. NO also modulated the extent of phytochelatin content, and possibly their function, by S-nitrosylation. These results shed light on the signaling events controlling Cd2+ cytotoxicity in plants." @default.
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- W2082384602 date "2009-03-04" @default.
- W2082384602 modified "2023-10-16" @default.
- W2082384602 title "Nitric Oxide Is Involved in Cadmium-Induced Programmed Cell Death in Arabidopsis Suspension Cultures " @default.
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- W2082384602 doi "https://doi.org/10.1104/pp.108.133397" @default.
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