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journal article Aug 31, 2017

Components of mesophyll resistance and their environmental responses: A theoretical modelling analysis

Yi Xiao ORCID XIN‐GUANG ZHU ORCID
Plant, Cell & Environment Vol. 40 No. 11 pp. 2729-2742 · Wiley
View at Publisher Save 10.1111/pce.13040
Abstract
AbstractMesophyll resistance (rm), stomatal resistance, and biochemical limitations are recognized as three critical factors limiting leaf photosynthesis. Contrary to the expectation of being a constant, rm not only varies with light and CO2 conditions but also shows different responses among species. To elucidate the mechanistic basis of these responses, we derived an analytical model of rm, which incorporates various anatomical and biochemical factors including permeabilities of cell wall and chloroplast envelope to CO2 and HCO3−, carbonic anhydrase activities in cytosol and stroma, Rubisco activities, and relative location of mitochondria and chloroplast. The robustness of this model was confirmed by comparing the predicted rm and its components to numerical models developed at cell and leaf levels, which incorporate detailed 3‐dimensional cell and leaf anatomies, CO2 hydration and diffusion processes from intercellular air space to stroma, and CO2 fixation by Rubisco. A combination of these model analyses shows that the varying rm is influenced by four biochemical factors: (a) nonuniform photosynthesis status across the leaf, (b) photorespiration and respiration, (c) bicarbonate leakage on the chloroplast envelope, and (d) hydration activity in cytosol and stroma. This study provides a theoretical framework to study components of rm and their responses to environmental perturbations.
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References
35
[13]
Physiological basis of genetic variation in leaf photosynthesis among rice (Oryza sativa L.) introgression lines under drought and well-watered conditions

Jianping Gu, Xinyou Yin, Tjeerd-Jan Stomph et al.

Journal of Experimental Botany 10.1093/jxb/ers170
[18]
Nobel P. S. (1999)
Cited By
46
Effects of microplastics and combined pollution of polystyrene and di-n-octyl phthalate on photosynthesis of cucumber (Cucumis sativus L.)

Haoran Zhuang, Zhenxia Li · 2024

Science of The Total Environment
Metrics
46
Citations
35
References
Details
Published
Aug 31, 2017
Vol/Issue
40(11)
Pages
2729-2742
License
View
Authors
Y
Yi Xiao

Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences Shanghai China

X
XIN‐GUANG ZHU

Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences Shanghai China; State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research Center Changsha China

Funding
National Natural Science Foundation of China Award: 30970213
Bill and Melinda Gates Foundation Award: OPP1129902
Chinese Academy of Sciences Award: XDA08020301
Ministry of Science and Technology of the People's Republic of China Award: 2011DFA
Cite This Article
Yi Xiao, XIN‐GUANG ZHU (2017). Components of mesophyll resistance and their environmental responses: A theoretical modelling analysis. Plant, Cell & Environment, 40(11), 2729-2742. https://doi.org/10.1111/pce.13040
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