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Trends in plant science v.22 no.2, 2017년, pp.140 - 153   SCI SCIE
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Learning To Breathe: Developmental Phase Transitions in Oxygen Status

Considine, Michael J. (The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia ); Diaz-Vivancos, Pedro (Group of Fruit Biotechnology, Department of Plant Breeding, Centro de Edafología y Biología Aplicada del Segura (CEBAS)–Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario de Espinardo, Murcia 30100, Spain ); Kerchev, Pavel (Vlaams Instituut voor Biotechnologie (VIB) Department of Plant Systems Biology, University of Gent Technologiepark 927, Gent, 9052 Belgium ); Signorelli, Santiago (School of Plant Biology, The University of Western Australia, Perth, WA 6009, Australia ); Agudelo-Romero, Patricia (Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth, WA 6009, Australia ); Gibbs, Daniel J. (School of Biosciences, University of Birmingham, Edgbaston B15 2TT, UK ); Foyer, Christine H. (The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia );
  • 초록  

    Plants are developmentally disposed to significant changes in oxygen availability, but our understanding of the importance of hypoxia is almost entirely limited to stress biology. Differential patterns of the abundance of oxygen, nitric oxide ( • NO), and reactive oxygen species (ROS), as well as of redox potential, occur in organs and meristems, and examples are emerging in the literature of mechanistic relationships of these to development. We describe here the convergence of these cues in meristematic and reproductive tissues, and discuss the evidence for regulated hypoxic niches within which oxygen-, ROS-, • NO-, and redox-dependent signalling curate developmental transitions in plants. Trends Plant responses to a change in the availability of oxygen under stress conditions are widely understood. Recent research also provides important developmental contexts for oxygen status. Gradients of oxygen and related cues appear to converge upon hypoxic niches surrounding vital cells, such as root quiescent centre cells and male germ line cells. The regulation of oxygen status is mechanistically related to seed germination, the skoto-photomorphogenic transition, and meiosis. Within each context, ROS and RNS, whose levels are directly linked to oxygen status, appear to be paramount in determining cell fate, but knowledge of the nexus of interactions that determine cell identity and fate remains elusive.


  • 주제어

    oxygen tension .   ROS/RNS .   N-end rule proteolysis .   redox .   development .   differentiation.  

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