气候变化领域集成服务门户(CCPortal): Incorporating photosynthetic acclimation improves stomatal optimisation models

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DOI	10.1111/pce.14891
	Incorporating photosynthetic acclimation improves stomatal optimisation models
	Flo, Victor; Joshi, Jaideep; Sabot, Manon; Sandoval, David; Prentice, Iain Colin
发表日期	2024
ISSN	0140-7791
EISSN	1365-3040
英文摘要	Stomatal opening in plant leaves is regulated through a balance of carbon and water exchange under different environmental conditions. Accurate estimation of stomatal regulation is crucial for understanding how plants respond to changing environmental conditions, particularly under climate change. A new generation of optimality-based modelling schemes determines instantaneous stomatal responses from a balance of trade-offs between carbon gains and hydraulic costs, but most such schemes do not account for biochemical acclimation in response to drought. Here, we compare the performance of six instantaneous stomatal optimisation models with and without accounting for photosynthetic acclimation. Using experimental data from 37 plant species, we found that accounting for photosynthetic acclimation improves the prediction of carbon assimilation in a majority of the tested models. Photosynthetic acclimation contributed significantly to the reduction of photosynthesis under drought conditions in all tested models. Drought effects on photosynthesis could not accurately be explained by the hydraulic impairment functions embedded in the stomatal models alone, indicating that photosynthetic acclimation must be considered to improve estimates of carbon assimilation during drought. Accounting for photosynthetic acclimation improves the predictions of carbon assimilation in all the stomatal optimisation models evaluated. The influence of drought on photosynthesis cannot be fully explained by the hydraulic impairment function of the stomatal models alone.
英文关键词	carbon assimilation; photosynthetic cost; soil drought; stomatal conductance; stomatal limitation
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001198327400001
来源期刊	PLANT CELL AND ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295780
作者单位	Imperial College London; Autonomous University of Barcelona; University of Bern; University of Bern; International Institute for Applied Systems Analysis (IIASA); Okinawa Institute of Science & Technology Graduate University; University of New South Wales Sydney; Max Planck Society; Imperial College London
推荐引用方式 GB/T 7714	Flo, Victor,Joshi, Jaideep,Sabot, Manon,et al. Incorporating photosynthetic acclimation improves stomatal optimisation models[J],2024.
APA	Flo, Victor,Joshi, Jaideep,Sabot, Manon,Sandoval, David,&Prentice, Iain Colin.(2024).Incorporating photosynthetic acclimation improves stomatal optimisation models.PLANT CELL AND ENVIRONMENT.
MLA	Flo, Victor,et al."Incorporating photosynthetic acclimation improves stomatal optimisation models".PLANT CELL AND ENVIRONMENT (2024).