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Experimental warming enhances the carbon gain but does not affect the yield of maize (Zea mays L.) in the North China Plain
Zheng, Yunpu1,2; Guo, Lili1; Hou, Ruixing2; Zhou, Haoran3; Hao, Lihua1; Li, Fei1; Cheng, Dongjuan1; Peng, Zhengping4; Xu, Ming2,5
2018-03-01
Source PublicationFLORA
ISSN0367-2530
Volume240Pages:152-163
Corresponding AuthorXu, Ming(mingxu@crssa.rutgers.edu)
AbstractTemperature response and sensitivity of photosynthesis and respiration are critical for projection of changes in the carbon exchange and net primary production of terrestrial ecosystems under global warming. Understanding the mechanisms and processes of photosynthetic and respiratory acclimation in response to warming may shed further lights on the change of crop yield in agricultural ecosystems in a warmer climate regime. We examined the temperature responses and sensitivity of net photosynthetic rate (A(n)) and dark respiration (R-d) for exploring the mechanisms of thermal acclimation associated with physiological and biochemical processes affecting maize yield in the North China Plain with a field manipulative warming experiment. We found that warming substantially enhanced the carbon gain of maize plants through facilitating CO2 diffusion from ambient air to chloroplasts by altering stomatal structure and spatial distribution pattern, and benefitting CO2 assimilation efficiency with smaller vascular bundles and bigger chloroplasts. Moreover, we also found that acclimation of A(n) to temperature (T), evidenced by the upward shift of A(n)-T, was determined by the maximum velocity of Rubisco carboxylation (V-cmax), the maximum rate of electron transport (J(max)), and the stomatal-regulated CO2 diffusion process, whereas the balance between respiration and gross photosynthetic rate (R-d/A(g)), and/or regeneration of RuBP and the Rubisco carboxylation (J(max)/V-cmax) made little contribution to the thermal acclimation of A(n) in maize plants. In addition, temperature response and sensitivity of R-d was closely associated with the changes in foliar N concentration induced by warming. As a result, experimental warming barely affected the yield and biomass of maize plants. These results suggest that the impacts of future climate warming on maize production may be mitigated or even offset by the leaf-level thermal acclimation of photosynthesis and respiration. Our findings may have important implications for improving the accuracy of process-based ecosystem models and advancing the understanding on the interactions between ecosystem functions and climate warming.
KeywordThermal acclimation Crop production Climate warming Photosynthesis Dark respiration Stomata
DOI10.1016/j.flora.2018.02.001
WOS KeywordGRIDDED CROP MODELS ; CLIMATE-CHANGE ; PHOTOSYNTHETIC ACCLIMATION ; TEMPERATURE-DEPENDENCE ; ELEVATED CO2 ; GROWTH TEMPERATURES ; BRASSICA-OLERACEA ; RESPIRATION ; LEAF ; RICE
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China Topsoil regulation and soil fertility improvement of the wheat-maize field in northern of Huang-Huai-Hai[2017YFD0300905] ; Natural Science Foundation of China[31400418] ; Science and Technology Planning Project of Hebei Province[15227004D] ; Natural Science Foundation of Hebei Province[C2016402088] ; Young Outstanding Innovative Talents of Hebei Province[BJ2016012] ; Hebei Province Foundation for Returnees[CN201702] ; Project on Promoting New Rural Construction with Science and Technology in Qinghai Province[2013-N-556]
Funding OrganizationNational Key Research and Development Program of China Topsoil regulation and soil fertility improvement of the wheat-maize field in northern of Huang-Huai-Hai ; Natural Science Foundation of China ; Science and Technology Planning Project of Hebei Province ; Natural Science Foundation of Hebei Province ; Young Outstanding Innovative Talents of Hebei Province ; Hebei Province Foundation for Returnees ; Project on Promoting New Rural Construction with Science and Technology in Qinghai Province
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Ecology
WOS IDWOS:000427998600017
PublisherELSEVIER GMBH, URBAN & FISCHER VERLAG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57327
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Ming
Affiliation1.Hebei Univ Engn, Sch Water Conservancy & Hydropower, Handan 056038, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China
3.Univ Penn, Dept Biol, Philadelphia, PA 19104 USA
4.Hebei Agr Univ, Sch Resources & Environm Sci, Baoding 071001, Peoples R China
5.Rutgers State Univ, Dept Ecol Evolut & Nat Resources, Ctr Remote Sensing & Spatial Anal, 14 Coll Farm Rd, New Brunswick, NJ 08901 USA
Recommended Citation
GB/T 7714
Zheng, Yunpu,Guo, Lili,Hou, Ruixing,et al. Experimental warming enhances the carbon gain but does not affect the yield of maize (Zea mays L.) in the North China Plain[J]. FLORA,2018,240:152-163.
APA Zheng, Yunpu.,Guo, Lili.,Hou, Ruixing.,Zhou, Haoran.,Hao, Lihua.,...&Xu, Ming.(2018).Experimental warming enhances the carbon gain but does not affect the yield of maize (Zea mays L.) in the North China Plain.FLORA,240,152-163.
MLA Zheng, Yunpu,et al."Experimental warming enhances the carbon gain but does not affect the yield of maize (Zea mays L.) in the North China Plain".FLORA 240(2018):152-163.
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