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Modifying mesophyll conductance to optimise photosynthesis in crops

Code: 9781801464697
Publication date: 30/08/2022
Extent: 28 pages

Contributions by: Coralie E. Salesse-Smith, University of Illinois at Urbana-Champaign, USA; Steven M. Driever, Wageningen University and Research, The Netherlands; and Victoria C. Clarke, The Australian National University, Australia

Chapter synopsis: Mesophyll conductance (gm), the ease with which carbon dioxide can diffuse into and through plant cells, is a promising target for improving photosynthetic rates in plants. Barriers including cell walls, membranes, liquid phases and the anatomy and orientation of the cells and their subcellular organelles impose resistances on carbon dioxide diffusion within leaves. Recent research has helped generate a comprehensive understanding of these resistances and we review efforts to alter and improve mesophyll conductance in plants through manipulation of the structure and composition of these barriers.

DOI: 10.19103/AS.2022.0119.10

Open Access

This is an open access chapter distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY).

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Table of contents 1 Introduction 2 Points of resistance to diffusion of CO2 3 The interaction between mesophyll cell anatomy, light and gm 4 Leaf age and gm 5 Cell wall diffusion 6 Cellular membranes and CO2 diffusion 7 Improving gm using aquaporins as CO2 channels 8 CO2 solubility in liquids

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