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Regulation and Turnover of Nitric Oxide by Phytoglobins in Plant Cell Responses

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  • Abir U Igamberdiev, Department of Biology, Memorial University of Newfoundland, Canada
  • Kim Hebelstrup
  • Claudio Stasolla, Department of Plant Science, University of Manitoba, Canada
  • Robert D Hill, Department of Plant Science, University of Manitoba, Canada
The involvement of phytoglobins in the metabolism of nitric oxide (NO) and reactive nitrogen species (RNS) produced during stress, plant growth, and development is discussed. The action of phytoglobin expression upon NO leads to the maintenance of redox status, minimization of the damage from reactive oxygen and nitrogen species in the cytoplasm of the cell, and regulation of hormonal and stress responses. NO scavenging is achieved via phytoglobins, and it can also involve S-nitrosoglutathione reductase and a direct interaction of NO with superoxide anion followed by detoxification of formed peroxynitrite. The interplay between these pathways results in flexible change of NADH/NAD+ ratios, glutathione potential, and the level of nitrosylation of proteins. The system of production and detoxification of RNS is linked to morphogenetic events such as relief of dormancy, aerenchyma formation, etc. Due to the mobility of both NO and phytohormones, plants developed strategies to regulate specific cell hormonal actions to permit differentiation during development and to respond to stress. Phytoglobins are the agents responsible for differential cellular responses to hormones that use NO as a signal transduction factor.
Original languageEnglish
Title of host publicationGasotransmitters in Plants : The Rise of a New Paradigm in Cell Signaling
EditorsLorenzo Lamattina, Carlos Garcia-Mata
Number of pages17
Publication year2 Sep 2016
ISBN (print)978-3-319-40711-1
ISBN (Electronic)978-3-319-40713-5
Publication statusPublished - 2 Sep 2016
SeriesSignaling and Communication in Plants

    Research areas

  • Hypoxic stress, Nitric oxide, Phytoglobin , Phytohormones , Programmed cell death, Reactive oxygen species , Reactive nitrogen species

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ID: 103951492