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    Nitric Oxide: A Multitasked Signaling Gas in Plants

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    Type
    Article
    Authors
    Domingos, Patricia
    Prado, Ana Margarida
    Wong, Aloysius Tze cc
    Gehring, Christoph A cc
    Feijo, Jose A.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Molecular Signalling Group
    Date
    2015-01-05
    Online Publication Date
    2015-01-05
    Print Publication Date
    2015-04
    Permanent link to this record
    http://hdl.handle.net/10754/347332
    
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    Abstract
    Nitric oxide (NO) is a gaseous reactive oxygen species (ROS) that has evolved as a signaling hormone in many physiological processes in animals. In plants it has been demonstrated to be a crucial regulator of development, acting as a signaling molecule present at each step of the plant life cycle. NO has also been implicated as a signal in biotic and abiotic responses of plants to the environment. Remarkably, despite this plethora of effects and functional relationships, the fundamental knowledge of NO production, sensing, and transduction in plants remains largely unknown or inadequately characterized. In this review we cover the current understanding of NO production, perception, and action in different physiological scenarios. We especially address the issues of enzymatic and chemical generation of NO in plants, NO sensing and downstream signaling, namely the putative cGMP and Ca2+ pathways, ion-channel activity modulation, gene expression regulation, and the interface with other ROS, which can have a profound effect on both NO accumulation and function. We also focus on the importance of NO in cell–cell communication during developmental processes and sexual reproduction, namely in pollen tube guidance and embryo sac fertilization, pathogen defense, and responses to abiotic stress.
    Citation
    Nitric Oxide: A Multitasked Signaling Gas in Plants 2014 Molecular Plant
    Publisher
    Elsevier BV
    Journal
    Molecular Plant
    DOI
    10.1016/j.molp.2014.12.010
    PubMed ID
    25680232
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S167420521400046X
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.molp.2014.12.010
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program

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