@article{14bb7eed73c94dac88930a2f39add742,
title = "Retrospective analysis of biochemical limitations to photosynthesis in 49 species: C4 crops appear still adapted to pre-industrial atmospheric [CO2]",
abstract = "Leaf CO2 uptake (A) in C4 photosynthesis is limited by the maximum apparent rate of PEPc carboxylation (Vpmax) at low intercellular [CO2] (ci) with a sharp transition to a ci-saturated rate (Vmax) due to co-limitation by ribulose-1:5-bisphosphate carboxylase/oxygenase (Rubisco) and regeneration of PEP. The response of A to ci has been widely used to determine these two parameters. Vmax and Vpmax depend on different enzymes but draw on a shared pool of leaf resources, such that resource distribution is optimized, and A maximized, when Vmax and Vpmax are co-limiting. We collected published A/ci curves in 49 C4 species and assessed variation in photosynthetic traits between phylogenetic groups, and as a function of atmospheric [CO2]. The balance of Vmax-Vpmax varied among evolutionary lineages and C4 subtypes. Operating A was strongly Vmax-limited, such that re-allocation of resources from Vpmax towards Vmax was predicted to improve A by 12% in C4 crops. This would not require additional inputs but rather altered partitioning of existing leaf nutrients, resulting in increased water and nutrient-use efficiency. Optimal partitioning was achieved only in plants grown at pre-industrial atmospheric [CO2], suggesting C4 crops have not adjusted to the rapid increase in atmospheric [CO2] of the past few decades.",
keywords = "A/c curve, C photosynthesis, C subtype, V, V, elevated CO, pre-industrial CO, stomatal conductance, water-use efficiency",
author = "Pignon, {Charles P.} and Long, {Stephen P.}",
note = "Funding Information: The authors thank Drs. Bloom (Bloom et al., 2012), Chen (Y. G. Chen, Ni, & Buntin, 2009), de Souza (de Souza, 2011; de Souza et al., 2013), Feng (X. Feng & Dietze, 2013), Friesen (Friesen, Peixoto, Busch, Johnson, & Sage, 2014), Ge (Ge, Zhang, Yuan, & Zhang, 2014), Ghannoum (Pinto et al., 2014), Glowacka (Glowacka et al., 2015), Jaikumar (Jaikumar, 2016), Kim (Kim et al., 2007), King (Albaugh et al., 2014), Koteyeva (Voznesenskaya et al., 2007), Maherali (Anderson, Maherali, Johnson, Polley, & Jackson, 2001), Marchiori (Marchiori, Machado, & Ribeiro, 2014), Markelz (Markelz et al., 2011), Niu (Niu et al., 2008), Osborne (Osborne, Wythe, Ibrahim, Gilbert, & Ripley, 2008), Ripley (B. Ripley, Frole, & Gilbert, 2010), Sage (Vogan & Sage, 2012), von Caemmerer (Pengelly et al., 2011), Wang (D. Wang, Fan, & Heckathorn, 2014; D. Wang, Heckathorn, Hamilton, & Frantz, 2014; D. Wang et al., 2012), and Xu (Xu et al., 2014) for providing datasets for A/ci curves used in their publications. The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency‐Energy (ARPA‐E), U.S. Department of Energy, under Award Number DE‐DE‐AR0000661. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. The authors declare no conflict of interest. Funding Information: information Advanced Research Projects Agency - Energy, Grant/Award Number: AR0000661The authors thank Drs. Bloom (Bloom et al., 2012), Chen (Y. G. Chen, Ni, & Buntin, 2009), de Souza (de Souza, 2011; de Souza et al., 2013), Feng (X. Feng & Dietze, 2013), Friesen (Friesen, Peixoto, Busch, Johnson, & Sage, 2014), Ge (Ge, Zhang, Yuan, & Zhang, 2014), Ghannoum (Pinto et al., 2014), Glowacka (Glowacka et al., 2015), Jaikumar (Jaikumar, 2016), Kim (Kim et al., 2007), King (Albaugh et al., 2014), Koteyeva (Voznesenskaya et al., 2007), Maherali (Anderson, Maherali, Johnson, Polley, & Jackson, 2001), Marchiori (Marchiori, Machado, & Ribeiro, 2014), Markelz (Markelz et al., 2011), Niu (Niu et al., 2008), Osborne (Osborne, Wythe, Ibrahim, Gilbert, & Ripley, 2008), Ripley (B. Ripley, Frole, & Gilbert, 2010), Sage (Vogan & Sage, 2012), von Caemmerer (Pengelly et al., 2011), Wang (D. Wang, Fan, & Heckathorn, 2014; D. Wang, Heckathorn, Hamilton, & Frantz, 2014; D. Wang et al., 2012), and Xu (Xu et al., 2014) for providing datasets for A/ci curves used in their publications. The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award Number DE-DE-AR0000661. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. The authors declare no conflict of interest. Publisher Copyright: {\textcopyright} 2020 John Wiley & Sons Ltd",
year = "2020",
month = nov,
day = "1",
doi = "10.1111/pce.13863",
language = "English (US)",
volume = "43",
pages = "2606--2622",
journal = "Plant, Cell and Environment",
issn = "0140-7791",
publisher = "Wiley-Blackwell",
number = "11",
}