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Membrane Specificity of Proton Pyrophosphatase and Plasmodesmata Ultrastructure Provide the Structural Basis for Sugar Loading in Oryza sativa and Physcomitrella patens


Abstract The remarkable conservation of molecular and intra-/inter-cellular pathways underpinning the fundamental aspects of sugar partitioning in two evolutionarily divergent organisms – a non-vascular moss Physcomitrella patens and a vascular cereal crop Oryza sativa (rice) – forms the basis of this manuscript. Much of our current knowledge pertaining to sugar partitioning in plants mainly comes from studies in thale cress, Arabidopsis thaliana, but how photosynthetic sugar is loaded into the phloem in a crop as important as rice is still debated. Even less is known about the mechanistic aspects of sugar movement in mosses. In plants, sugar either moves passively via intercellular channels called plasmodesmata, or through the cell wall spaces in a... (more)
Created Date 2016
Contributor Regmi, Kamesh Chandra (Author) / Gaxiola, Roberto A (Advisor) / Wojciechowski, Martin F (Committee member) / Pigg, Kathleen B (Committee member) / Roberson, Robert W (Committee member) / Arizona State University (Publisher)
Subject Plant sciences / Dual membrane-specificity / Electron Tomography / Plasmodesmata / Proton Pyrophosphatase / Pyrophosphate Synthase / Transmission Electron Microscopy
Type Doctoral Dissertation
Extent 160 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Biology 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis
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Description 3D MODEL OF SIMPLE PLASMODESMATA
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Description 3D MODEL OF SIMPLE PLASMODESMATA
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Description 3D MODEL OF COMPLEX PLASMODESMATA
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Description MODELING SIMPLE PLASMODESMATA IN IMOD
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Description MODELING SIMPLE PLASMODESMATA IN IMOD
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Description MODELING COMPLEX PLASMODESMATA IN IMOD