Individual and interactive effects of air warming and elevated O3 on carbon fixation and allocation in two urban tree species

Wang, Yijing; Xu, Sheng; Li, Bo; Li, Yan; Wang, Ruiting; Chen, Wei; He, Xingyuan; Hayes, Felicity; Li, Maihe

doi:10.1016/j.agrformet.2023.109856

Agricultural and Forest Meteorology

2024

DOI: 10.1016/j.agrformet.2023.109856

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Individual and interactive effects of air warming and elevated O3 on carbon fixation and allocation in two urban tree species

Yijing Wang,

Sheng Xu,

Bo Li

et al.

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Cited by 4 publications

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Differential responses and mechanisms of monoterpene emissions from broad-leaved and coniferous species under elevated ozone scenarios

Yuan,

Du,

Feng

et al. 2024

Science of The Total Environment

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Differential responses and mechanisms of monoterpene emissions from broad-leaved and coniferous species under elevated ozone scenarios

Yuan,

Du,

Feng

et al. 2024

Science of The Total Environment

View full text Add to dashboard Cite

Tropospheric ozone pollution increases the sensitivity of plant production to vapor pressure deficit across diverse ecosystems in the Northern Hemisphere

Gao,

Guan,

et al. 2024

Science of The Total Environment

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Warming Mitigates Ozone Damage to Wheat Photosynthesis in a FACE Experiment

Xu,

Feng,

Bao

et al. 2024

Plant Cell & Environment

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Individual effects of elevated ozone (O3) and warming on wheat (Triticum aestivum L.) are well documented, their combined effects remain poorly understood. In the present study, we investigated the combined impacts of elevated O3 (1.5× ambient O3) and rising canopy temperature (+2°C) on the photosynthesis of wheat leaves in an open‐air field experiment. We found that O3‐induced oxidative stress reduced the biochemical capacity and inhibited leaf photosynthesis at the end of the grain‐filling stage. Night‐time warming (NW) increased leaf photosynthesis during the vegetative stage, but whole‐day warming (WW) did not. Both WW and NW accelerated wheat development and decreased photosynthesis at the end of the reproductive stage. Neither elevated O3 nor warming stimulated antioxidant enzymes. Significant interaction between O3 and WW indicated that WW mitigated the adverse effect of O3 on leaf photosynthesis. Compared to NW, WW significantly increased daytime canopy temperature and canopy‐to‐air vapour pressure deficit across O3 treatments. Decreases in leaf water content and increases in grain oxygen isotope discrimination under warming suggested a link of WW‐induced protection against O3 stress in photosynthesis with declines in stomatal O3 uptake rather than increases in the antioxidant capacity. Our results indicate the need to consider the warming‐induced mitigation of O3 stress on leaf photosynthesis when predicting the effects of elevated O3 on crop growth under warmer climate in the future.

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Individual and interactive effects of air warming and elevated O3 on carbon fixation and allocation in two urban tree species

Cited by 4 publications

References 36 publications

Differential responses and mechanisms of monoterpene emissions from broad-leaved and coniferous species under elevated ozone scenarios

Differential responses and mechanisms of monoterpene emissions from broad-leaved and coniferous species under elevated ozone scenarios

Tropospheric ozone pollution increases the sensitivity of plant production to vapor pressure deficit across diverse ecosystems in the Northern Hemisphere

Warming Mitigates Ozone Damage to Wheat Photosynthesis in a FACE Experiment

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