In this section
@article{Liu:2024,
author = {Liu, J and Ryu, Y and Luo, X and Dechant, B and Stocker, BD and Keenan, TF and Gentine, P and Li, X and Li, B and Harrison, SP and Prentice, IC},
journal = {Nature Plants},
title = {Evidence for widespread thermal acclimation of canopy photosynthesis},
url = {http://hdl.handle.net/10044/1/114763},
year = {2024}
}
TY - JOUR
AB - Plants acclimate to temperature by adjusting their photosynthetic capacity over weeks to months. However, most evidence for photosynthetic acclimation derives from leaf-scale experiments. Here, we address the scarcity of evidence for canopy-scale photosynthetic acclimation by examining the correlation between maximum photosynthetic rates (Amax,2000) and growth temperature ((T_air ) ) across a range of concurrent temperatures and canopy foliage quantity, using data from over 200 eddy covariance sites. We detect widespread thermal acclimation of canopy-scale photosynthesis, demonstrated by enhanced Amax,2000 under higher (T_air ) , across flux sites with adequate water availability. A 14-day period is identified as the most relevant time scale for acclimation across all sites, with a range of 12–25 days for different plant functional types. The mean apparent thermal acclimation rate across all ecosystems is 0.41 (-0.38–1.04 for 5th–95th percentile range) µmol m-2 s-1 C-1, with croplands showing the largest and grasslands the lowest acclimation rates. Incorporating an optimality-based prediction of leaf photosynthetic capacities into a biochemical photosynthesis model is shown to improve the representation of thermal acclimation. Our results underscore the critical need for enhanced understanding and modelling of canopy-scale photosynthetic capacity to accurately predict plant responses to warmer growing seasons.
AU - Liu,J
AU - Ryu,Y
AU - Luo,X
AU - Dechant,B
AU - Stocker,BD
AU - Keenan,TF
AU - Gentine,P
AU - Li,X
AU - Li,B
AU - Harrison,SP
AU - Prentice,IC
PY - 2024///
SN - 2055-026X
TI - Evidence for widespread thermal acclimation of canopy photosynthesis
T2 - Nature Plants
UR - http://hdl.handle.net/10044/1/114763
ER -