Leaf Photosynthetic and Respiratory Thermal Acclimation in Terrestrial Plants in Response to Warming: A Global Synthesis

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

Leaf photosynthesis and respiration are two of the largest carbon fluxes between atmosphere biosphere. Although experiments examining warming effects on photosynthetic respiratory thermal acclimation have been widely conducted, sensitivity various ecosystem vegetation types to remains uncertain. Here we conducted a meta-analysis experimental observations worldwide. We found that optimum temperature for rate (Topt) maximum carboxylation Rubisco (ToptV) in tropical forest plants increased by 0.51°C 2.12°C per 1°C warming, respectively. Similarly, Topt electron transport RuBP regeneration (ToptJ) temperate 0.91°C 0.15°C However, reduced rates at (Aopt) were observed (17.2%) grassland (16.5%) plants, indicating they exhibited limited warming. Warming (R25) boreal 6.2%, suggesting can acclimate Photosynthesis broadleaved deciduous trees may adapt as indicated higher Aopt (7.5%) (1.08°C warming), but lower R25 (7.7%). needleleaved evergreen (-14.1%) herbs (-16.3%), both associated with Aopt. Respiration acclimated (reduced (Q10)); however, did not (increased R25). Plants grasslands herbaceous species displayed weakest primarily due significant reductions Our global synthesis provides comprehensive analysis divergent across types, framework modeling responses cycling

Language: Английский

A loss of stomata exposes a critical vulnerability to variable atmospheric humidity in ferns

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Divergent Photo-Respiration Responses of Four Common Subtropical Tree Species to Modest Warming

Published: Jan. 1, 2025

Language: Английский