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    Putting the brakes on chloroplast stress signaling

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    Tano and Woodson 2022.pdf
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    Author
    Tano, David W
    Woodson, Jesse D
    Affiliation
    School of Plant Sciences, University of Arizona
    Issue Date
    2022-02-17
    
    Metadata
    Show full item record
    Publisher
    Elsevier Ltd
    Citation
    Tano, D. W., & Woodson, J. D. (2022). Putting the brakes on chloroplast stress signaling. Molecular Plant, 15(3), 388-390.
    Journal
    Molecular plant
    Rights
    Copyright © 2022 The Author.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    As sessile organisms, plants must be able to sense their surroundings and adjust. One way plants do this is by using their energy-producing organelles (chloroplasts and mitochondria). During environmental stress, these organelles experience metabolic changes that induce signals for acclimation. While many metabolites have been proposed as signaling factors, reactive oxygen species (ROS) are known to play prominent roles. In the chloroplast, the ROS singlet oxygen (1O2) is naturally produced during impaired photosynthesis and can lead to retrograde signaling to the nucleus (to control the expression of hundreds of genes), chloroplast degradation, and cell death. The mechanisms controlling these pathways have mostly remained obscure. Recently, Dogra et al., 2022 reported a new role for EXECUTER2 (EX2) in these chloroplast 1O2 signaling pathways, demonstrating that EX2 acts as a buffer to prevent premature activation of 1O2 signaling. These exciting findings reveal an unexpected complexity to chloroplast stress signaling, and identify a decoy mechanism to prevent early activation of cell death.
    Note
    12 month embargo; published 07 March 2022
    EISSN
    1752-9867
    PubMed ID
    35183786
    DOI
    10.1016/j.molp.2022.02.009
    Version
    Final accepted manuscript
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.molp.2022.02.009
    Scopus Count
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    UA Faculty Publications

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