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- W2044861505 abstract "Abstract Reactive oxygen species (ROS) play a crucial role in many cellular responses and signaling pathways, including the oxidative burst defense response to pathogens. We have examined very early events in cryptogein-induced ROS production in tobacco (Nicotiana tabacum) Bright Yellow-2 suspension cells. Using Amplex Red and Amplex Ultra Red reagents, which report real-time H2O2 accumulation in cell populations, we show that the internal signal for H2O2 develops more rapidly than the external apoplastic signal. Subcellular accumulation of H2O2 was also followed in individual cells using the 2′,7′-dichlorofluorescein diacetate fluorescent probe. Major accumulation was detected in endomembrane, cytoplasmic, and nuclear compartments. When cryptogein was added, the signal developed first in the nuclear region and, after a short delay, in the cell periphery. Interestingly, isolated nuclei were capable of producing H2O2 in a calcium-dependent manner, implying that nuclei can serve as a potential active source of ROS production. These results show complex spatial compartmentalization for ROS accumulation and an unexpected temporal sequence of events that occurs after cryptogein application, suggesting novel intricacy in ROS-signaling cascades." @default.
- W2044861505 created "2016-06-24" @default.
- W2044861505 creator A5006411146 @default.
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- W2044861505 creator A5058584635 @default.
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- W2044861505 date "2007-02-02" @default.
- W2044861505 modified "2023-09-23" @default.
- W2044861505 title "Diverse Subcellular Locations of Cryptogein-Induced Reactive Oxygen Species Production in Tobacco Bright Yellow-2 Cells" @default.
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- W2044861505 doi "https://doi.org/10.1104/pp.106.090902" @default.
- W2044861505 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1851816" @default.
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- W2044861505 hasPublicationYear "2007" @default.
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