The response of mesophyll conductance to short-term variation in CO2 in the C4 plants Setaria viridis and Zea mays

Journal of Experimental Botany
Nerea UbiernaAsaph B Cousins

Abstract

Mesophyll conductance (gm) limits rates of C3 photosynthesis but little is known about its role in C4 photosynthesis. If gm were to limit C4 photosynthesis, it would likely be at low CO2 concentrations (pCO2). However, data on C4-gm across ranges of pCO2 are scarce. We describe the response of C4-gm to short-term variation in pCO2, at three temperatures in Setaria viridis, and at 25 °C in Zea mays. Additionally, we quantified the effect of finite gm calculations of leakiness (ϕ) and the potential limitations to photosynthesis imposed by stomata, mesophyll, and carbonic anhydrase (CA) across pCO2. In both species, gm increased with decreasing pCO2. Including a finite gm resulted in either no change or increased ϕ compared with values calculated with infinite gm depending on whether the observed 13C discrimination was high (Setaria) or low (Zea). Post-transitional regulation of the maximal PEP carboxylation rate and PEP regeneration limitation could influence estimates of gm and ϕ. At pCO2 below ambient, the photosynthetic rate was limited by CO2 availability. In this case, the limitation imposed by the mesophyll was similar or slightly lower than stomata limitation. At very low pCO2, CA further constrained photosynthesis. High g...Continue Reading

References

Nov 1, 1986·The Journal of Infection·C SalmeronH P Lagrange
Jan 1, 1988·Pharmacology, Biochemistry, and Behavior·J A RuthA C Collins
Oct 1, 1983·British Journal of Orthodontics·H G Barrer
May 1, 1997·European Journal of Radiology·S TakashimaJ Yoshida
Dec 29, 2000·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·M R BadgerH Nakano
Feb 1, 1996·Plant Physiology·J. R. Evans, S. Von Caemmerer
Aug 1, 1989·Plant Physiology·G Bongi, F Loreto
Aug 31, 2007·Plant, Cell & Environment·Jaume FlexasMiquel Ribas-Carbo
Nov 13, 2007·Plant, Cell & Environment·Jaume FlexasHipólito Medrano
Apr 1, 2008·Journal of Experimental Botany·Asaph B CousinsSusanne von Caemmerer
Jun 17, 2008·Annals of Botany·Oula Ghannoum
Mar 4, 2009·Journal of Experimental Botany·Youshi TazoeJohn R Evans
Mar 17, 2009·Journal of Experimental Botany·Foteini HassiotouJohn R Evans
Feb 2, 2012·Plant, Cell & Environment·Graham D Farquhar, Lucas A Cernusak
May 18, 2012·Plant, Cell & Environment·Danny TholenXin-Guang Zhu
Sep 6, 2013·Plant, Cell & Environment·Chandra Bellasio, Howard Griffiths
Apr 9, 2014·Journal of Experimental Botany·Susanne von CaemmererAsaph B Cousins
Apr 24, 2014·Journal of Experimental Botany·Johannes KromdijkHoward Griffiths
Mar 13, 2016·Journal of Experimental Botany·Xinyou YinPaul C Struik
Oct 6, 2016·Journal of Experimental Botany·Hannah L OsbornSusanne von Caemmerer
Feb 1, 2004·The New Phytologist·Rowan F Sage

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Citations

May 16, 2019·The New Phytologist·Francisco Javier CanoOula Ghannoum
Oct 30, 2019·The Plant Journal : for Cell and Molecular Biology·Jürgen KnauerYing Sun
Jan 22, 2020·The Plant Journal : for Cell and Molecular Biology·Asaph B CousinsBalasaheb V Sonawane
Mar 1, 2020·The New Phytologist·Erika A Serrano-Romero, Asaph B Cousins
Feb 13, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Stella EggelsViktoriya Avramova
Jul 9, 2021·Scientific Reports·Getachew Agmuas AdnewThomas Röckmann
Jul 9, 2021·Photosynthesis Research·Sajad HussainWeiguo Liu

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