2026
article
OpenAlex
Muluken Enyew, Anthony J. Studer, Russell Woodford, Maria Ermakova et autres
Understanding the regulation of enzyme activity involved in photosynthesis is essential for engineering enhanced carbon fixation in crops. In C4 plants, the enzyme phosphoenolpyruvate carboxylase (PEPC, EC 4.1.1.31) is one of the most abundant leaf enzymes and plays an essential role in …
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2026
preprint
OpenAlex
Russell Woodford, Emma Faraone, Jacinta L. Watkins, Samuel J. Nix et autres
Abstract Adaptation of plant photosynthesis to dynamic light conditions experienced in natural environments is achieved through specific protective mechanisms. Energy-dependent non-photochemical quenching (qE), regulated by Photosystem II Subunit S (PsbS), is a key process facilitating acclimation to fluctuating light in C 3 …
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2026
article
OpenAlex
Kuenzang Om, Rita Giuliani, Maria Ermakova, Florence Danila et autres
Phosphoenolpyruvate carboxylase (PEPC) catalyzes the first irreversible reaction of the CO2 concentrating mechanism (CCM) in C4 photosynthesis. Engineering C4 photosynthesis into the C3 plant rice (Oryza sativa) to increase photosynthetic efficiency requires sufficient activity and proper regulation of PEPC. In previous studies, …
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2025
article
OpenAlex
Susanne von Caemmerer, Joseph A. Berry, Graham D. Farquhar
Abstract The model of C 3 photosynthesis of Farquhar et al. (1980) integrated knowledge of the functioning of the biochemical components of photosynthetic carbon assimilation in C 3 plants. The model linked equations describing activated Rubisco kinetics with those on the stoichiometry …
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2025
article
OpenAlex
Russell Woodford, Jacinta L. Watkins, Marten Moore, Samuel J. Nix et autres
PROTON GRADIENT REGULATION 5 (PGR5) plays a critical role in generating proton motive force across thylakoid membranes and supporting photoprotection under fluctuating light in C3 plants. It is proposed that this function is achieved by regulating cyclic electron flow around Photosystem I. …
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2025
article
OpenAlex
Yuzhen Fan, Daniel W. A. Noble, Belinda E. Medlyn, Russell K. Monson et autres
Summary Our understanding of how photosynthetic capacity varies among C4 species and across growth and measurement conditions remains limited. We collated 1696 CO2 response curves of net CO2 assimilation rate (A/Ci curves) from C4 species grown and measured at various environmental conditions …
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2025
article
OpenAlex
Susanne von Caemmerer, Graham D. Farquhar
Abstract The Planta paper “Some relationships between the biochemistry of photosynthesis and the gas exchange of leaves” explored the relationship between gas exchange measurements of CO2 assimilation rate and the in vitro activity of Rubisco and chloroplast electron transport capacity. It showed …
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2025
article
OpenAlex
Lingtian Yao, Susanne von Caemmerer, Florence R. Danila
Canola is an important economic and agronomic crop globally, but its yield is under threat due to climate change. Stomata are a key breeding target because of their importance in carbon capture and water use efficiency. However, screening for elite stomatal traits …
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2025
preprint
OpenAlex
Russell Woodford, Maria Ermakova, Robert T. Furbank, Susanne von Caemmerer
Abstract Gas exchange measurements provide crucial insights into the complex mechanisms of photosynthesis. Responses of CO 2 assimilation rate ( A ) to intercellular CO 2 partial pressure ( C i ) and irradiance ( I ) link gas exchange measurements to …
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2025
preprint
OpenAlex
Yuzhen Fan, Belinda E. Medlyn, Russell K. Monson, Rowan F. Sage et autres
• Our understanding of how photosynthesis varies among C4 species and across different growth and measurement conditions remains limited. • We collated 1,696 CO2 response curves of net CO2 assimilation rate (A/Ci curves) from C4 species grown and measured at various environmental …
au, us, ca, gb, br
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Accès ouvert
2025
article
OpenAlex
Robert Edward Sharwood, Adam Carroll, Gonzalo Martin Estavillo, Susanne von Caemmerer et autres
Many C4 plants are used as food and fodder crops and often display improved resource use efficiency compared to C3 plants. However, the response of C4 plants to future extreme conditions such as heatwaves is less understood. Here, Setaria viridis, an emerging …
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2024
article
OpenAlex
Diep R Ganguly, Robert T. Furbank, Susanne von Caemmerer, Florence R. Danila
SUMMARY Plasmodesmata (PD) are nanochannels that facilitate cell‐to‐cell transport in plants. More productive and photosynthetically efficient C 4 plants form more PD at the mesophyll (M)‐bundle sheath (BS) interface in their leaves than their less efficient C 3 relatives. In C 4 …
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