DOI: 10.1002/2014GB004848
Scopus记录号: 2-s2.0-85027932152
论文题名: The influence of photosynthetic acclimation to rising CO2 and warmer temperatures on leaf and canopy photosynthesis models
作者: Bagley J ; , Rosenthal D ; M ; , Ruiz-Vera U ; M ; , Siebers M ; H ; , Kumar P ; , Ort D ; R ; , Bernacchi C ; J
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 2 起始页码: 194
结束页码: 206
语种: 英语
英文关键词: C3 photosynthesis
; canopy photosynthesis models
; elevated CO2
; leaf photosynthesis models
; photosynthetic acclimation
; rising temperatures
Scopus关键词: atmospheric chemistry
; carbon dioxide
; concentration (composition)
; growing season
; growth response
; parameterization
; photosynthesis
; seasonal variation
; soybean
; Glycine max
英文摘要: There is an increasing necessity to understand how climate change factors, particularly increasing atmospheric concentrations of CO2 ([CO2]) and rising temperature, will influence photosynthetic carbon assimilation (A). Based on theory, an increased [CO2] concomitant with a rise in temperature will increase A in C3 plants beyond that of an increase in [CO2] alone. However, uncertainty surrounding the acclimation response of key photosynthetic parameters to these changes can influence this response. In this work, the acclimation responses of C3 photosynthesis for soybean measured at the SoyFACE Temperature by Free-Air CO2 Enrichment experiment are incorporated in a leaf biochemical and canopy photosynthesis model. The two key parameters used as model inputs, the maximum velocity for carboxylation (Vc,max) and maximum rate of electron transport (Jmax), were measured in a full factorial [CO2] by temperature experiment over two growing seasons and applied in leaf- and canopy-scale models to (1) reassess the theory of combined increases in [CO2] and temperature on A, (2) determine the role of photosynthetic acclimation to increased growth [CO2] and/or temperature in leaf and canopy predictions of A for these treatments, and (3) assess the diurnal and seasonal differences in leaf- and canopy-scale A associated with the imposed treatments. The results demonstrate that the theory behind combined increases in [CO2] and temperature is sound; however, incorporating more recent parameterizations into the photosynthesis model predicts greater increases in A when [CO2] and temperature are increased together. Photosynthetic acclimation is shown to decrease leaf-level A for all treatments; however, in elevated [CO2] the impact of acclimation does not result in any appreciable loss in photosynthetic potential at the canopy scale. In this analysis, neglecting photosynthetic acclimation in heated treatments, with or without concomitant rise in [CO2], leads to modeled overestimates of carbon gain for soybean under future predicted conditions. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78010
Appears in Collections: 气候变化事实与影响
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作者单位: Genomic Ecology of Global Change and Energy Biosciences Institute, Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Sustainable Energy Systems Group, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Environmental and Plant Biology, Ohio University, Athens, OH, United States; Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Global Change and Photosynthesis Research Unit, USDA Agricultural Research Service, Urbana, IL, United States
Recommended Citation:
Bagley J,, Rosenthal D,M,et al. The influence of photosynthetic acclimation to rising CO2 and warmer temperatures on leaf and canopy photosynthesis models[J]. Global Biogeochemical Cycles,2015-01-01,29(2)