Elevated [CO2] raises the temperature optimum of photosynthesis and thus promotes net photosynthesis of winter wheat and rice

doi:10.1111/ppl.13757

	Elevated [CO2] raises the temperature optimum of photosynthesis and thus promotes net photosynthesis of winter wheat and rice
	Lv, Chunhua 1; Huang, Yao1 ; Sun, Wenjuan 1; Yu, Lingfei 1; Hu, Zhenghua 2
	2022
发表期刊	PHYSIOLOGIA PLANTARUM
ISSN	0031-9317
卷号	174 期号:4
摘要	Atmospheric CO2 concentration ([CO2]) has increased by 49% since the pre-industrial era, and this increase will continue. Photosynthesis has long been recognized as one of the most temperature-sensitive processes, while far less is known about how elevated [CO2] (e[CO2]) affect crop photosynthesis response to short-term temperature increase. To reveal the effect, we measured gas exchange of winter wheat and rice with various leaf temperatures (T-L) under different [CO2] conditions (ambient, +120 mu mol mol(-1) in wheat, +160 mu mol mol(-1) in rice, and +200 mu mol mol(-1) in both) using open-top chamber facility. Analysis of the measurements showed that e[CO2] generally increased net photosynthesis (P-n) by 10-40% across various T-L at different developmental stages. The temperature sensitivity of P-n was negatively correlated with T-L. Elevated [CO2] raised the temperature optimum (T-opt) of P-n by 1.8-5.6 degrees C for wheat and 2.2-4.8 degrees C for rice, resulting in a wider range of T-L that can promote P-n. The responses of stomatal conductance, the maximum rate of carboxylation and the ratio of intercellular to growth environment [CO2] to T-opt are not only crop-specific but also stage-dependent. Furthermore, there is a divergence in the relationships between photosynthetic parameters for wheat and rice at T-opt. We conclude that e[CO2] raises T-opt of leaf photosynthesis and thus promotes P-n of winter wheat and rice in a humid subtropical climate. Further research on the coordination of leaf hydraulic and photosynthetic parameters in upland wheat and irrigated rice, as well as their response to e[CO2] should be made in the context of climate change.
学科领域	Plant Sciences
DOI	10.1111/ppl.13757
收录类别	SCI
语种	英语
WOS关键词	GROSS PRIMARY PRODUCTIVITY ; RISING CO2 ; MESOPHYLL CONDUCTANCE ; STOMATAL CONDUCTANCE ; WARMER TEMPERATURES ; PLANT PHENOLOGY ; ACCLIMATION ; RESPONSES ; DEPENDENCE ; LEAF
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000844106800001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1399-3054
资助机构	National Natural Science Foundation of China [41530533]
作者邮箱	huangyao@ibcas.ac.cn
引用统计
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29053
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Lv, Chunhua,Huang, Yao,Sun, Wenjuan,et al. Elevated [CO2] raises the temperature optimum of photosynthesis and thus promotes net photosynthesis of winter wheat and rice[J]. PHYSIOLOGIA PLANTARUM,2022,174(4).
APA	Lv, Chunhua,Huang, Yao,Sun, Wenjuan,Yu, Lingfei,&Hu, Zhenghua.(2022).Elevated [CO2] raises the temperature optimum of photosynthesis and thus promotes net photosynthesis of winter wheat and rice.PHYSIOLOGIA PLANTARUM,174(4).
MLA	Lv, Chunhua,et al."Elevated [CO2] raises the temperature optimum of photosynthesis and thus promotes net photosynthesis of winter wheat and rice".PHYSIOLOGIA PLANTARUM 174.4(2022).

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