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The role of chloroplast movement in C4 photosynthesis: a theoretical analysis using a three-dimensional reaction-diffusion model for maize

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العنوان: The role of chloroplast movement in C4 photosynthesis: a theoretical analysis using a three-dimensional reaction-diffusion model for maize
المؤلفون: Retta, Moges A., Yin, Xinyou, Ho, Quang Tri, Watté, Rodrigo, Berghuijs, Herman N.C., Verboven, Pieter, Saeys, Wouter, Cano, F. J., Ghannoum, Oula, Struik, Paul C., Nicolaï, Bart M.
المساهمون: Research Councils UK, Agencia Estatal de Investigación (España), Retta, Moges A., Yin, Xinyou, Ho, Quang Tri, Berghuijs, Herman N.C., Verboven, Pieter, Saeys, Wouter, Cano, F. J., Ghannoum, Oula, Struik, Paul C., Nicolaï, Bart M.
بيانات النشر: Oxford University Press
سنة النشر: 2023
المجموعة: Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council)
مصطلحات موضوعية: 3D leaf anatomy, Biophysical model, CO2 concentrating mechanism, Chloroplast movement, Gas exchange, Leakiness, Ray tracing
الوصف: 18 Pág. ; Chloroplasts movement within mesophyll cells in C4 plants is hypothesized to enhance the CO2 concentrating mechanism, but this is difficult to verify experimentally. A three-dimensional (3D) leaf model can help analyse how chloroplast movement influences the operation of the CO2 concentrating mechanism. The first volumetric reaction-diffusion model of C4 photosynthesis that incorporates detailed 3D leaf anatomy, light propagation, ATP and NADPH production, and CO2, O2 and bicarbonate concentration driven by diffusional and assimilation/emission processes was developed. It was implemented for maize leaves to simulate various chloroplast movement scenarios within mesophyll cells: the movement of all mesophyll chloroplasts towards bundle sheath cells (aggregative movement) and movement of only those of interveinal mesophyll cells towards bundle sheath cells (avoidance movement). Light absorbed by bundle sheath chloroplasts relative to mesophyll chloroplasts increased in both cases. Avoidance movement decreased light absorption by mesophyll chloroplasts considerably. Consequently, total ATP and NADPH production and net photosynthetic rate increased for aggregative movement and decreased for avoidance movement compared with the default case of no chloroplast movement at high light intensities. Leakiness increased in both chloroplast movement scenarios due to the imbalance in energy production and demand in mesophyll and bundle sheath cells. These results suggest the need to design strategies for coordinated increases in electron transport and Rubisco activities for an efficient CO2 concentrating mechanism at very high light intensities. ; The work is supported by the Research Council of KU Leuven (project C1/16/002) and the Research Fund Flanders (project G.0645.13). Wageningen based authors have contributed to this work within the program BioSolar Cells. FJC was funded through the Spanish fellowship Ramon y Cajal (RYC2021-035064-I). ; Peer reviewed
نوع الوثيقة: article in journal/newspaper
وصف الملف: application/pdf
اللغة: English
تدمد: 0022-0957
1460-2431
Relation: #PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/AEI//RYC2021-035064-I; Instituto de Ciencias Forestales (ICIFOR); Publisher's version; https://doi.org/10.1093/jxb/erad138; Sí; Journal of Experimental Botany 74(14): 4125-4142 (2023); http://hdl.handle.net/10261/334749; http://dx.doi.org/10.13039/501100011033; http://dx.doi.org/10.13039/501100000690; 2-s2.0-85168939833; https://api.elsevier.com/content/abstract/scopus_id/85168939833
DOI: 10.1093/jxb/erad138
DOI: 10.13039/501100011033
DOI: 10.13039/501100000690
الاتاحة: http://hdl.handle.net/10261/334749
https://doi.org/10.1093/jxb/erad138
https://doi.org/10.13039/501100011033
https://doi.org/10.13039/501100000690
https://api.elsevier.com/content/abstract/scopus_id/85168939833
Rights: open
رقم الانضمام: edsbas.85D148D2
قاعدة البيانات: BASE
الوصف
تدمد:00220957
14602431
DOI:10.1093/jxb/erad138