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

Global Change Biology, Год журнала: 2025, Номер 31(1)

Опубликована: Янв. 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

Язык: Английский

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

Current Biology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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

Опубликована: Янв. 1, 2025

Язык: Английский