气候变化领域集成服务门户(CCPortal): Solar-Induced Fluorescence Does Not Track Photosynthetic Carbon Assimilation Following Induced Stomatal Closure

CCPortal

DOI	10.1029/2020GL087956
	Solar-Induced Fluorescence Does Not Track Photosynthetic Carbon Assimilation Following Induced Stomatal Closure
	Marrs J.K.; Reblin J.S.; Logan B.A.; Allen D.W.; Reinmann A.B.; Bombard D.M.; Tabachnik D.; Hutyra L.R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Since 2006, six satellites measuring solar-induced chlorophyll fluorescence (SIF) have been launched to better constrain terrestrial gross primary productivity (GPP). The promise of the SIF signal as a proxy for photosynthesis with a strong relationship to GPP has been widely cited in carbon cycling studies. However, chlorophyll fluorescence originates from dynamic energy partitioning at the leaf level and does not exhibit a uniformly linear relationship with photosynthesis at finer scales. We induced stomatal closure in deciduous woody tree branches and measured SIF at a proximal scale, alongside leaf-level gas exchange, pulse amplitude modulated (PAM) fluorescence, and leaf pigment content. We found no change in SIF or steady-state PAM fluorescence, despite clear reductions in stomatal conductance, carbon assimilation, and light-use efficiency in treated leaves. These findings suggest that equating SIF and photosynthesis is an oversimplification that may undermine the utility of SIF as a biophysical parameter in GPP models. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Carbon; Chlorophyll; Photosynthesis; Plants (botany); Pulse amplitude modulation; Biophysical parameters; Chlorophyll fluorescence; Gross primary productivity; Light use efficiency; Linear relationships; Pulse-amplitude modulated; Solar-induced fluorescences; Stomatal conductance; Fluorescence; amplitude; biophysics; chlorophyll; deciduous tree; fluorescence; leaf; light use efficiency; photosynthesis; pigment; primary production; satellite data; steady-state equilibrium; stomatal conductance
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170014
作者单位	Department of Earth and Environment, Boston University, Boston, MA, United States; Biology Department, Bowdoin College, Brunswick, ME, United States; Remote Sensing Group, National Institute of Standards and Technology, Gaithersburg, MD, United States; Environmental Science Initiative, CUNY Advanced Sciences Research Center, New York, NY, United States; Department of Geography and Environmental Science, Hunter College, New York, NY, United States
推荐引用方式 GB/T 7714	Marrs J.K.,Reblin J.S.,Logan B.A.,et al. Solar-Induced Fluorescence Does Not Track Photosynthetic Carbon Assimilation Following Induced Stomatal Closure[J],2020,47(15).
APA	Marrs J.K..,Reblin J.S..,Logan B.A..,Allen D.W..,Reinmann A.B..,...&Hutyra L.R..(2020).Solar-Induced Fluorescence Does Not Track Photosynthetic Carbon Assimilation Following Induced Stomatal Closure.Geophysical Research Letters,47(15).
MLA	Marrs J.K.,et al."Solar-Induced Fluorescence Does Not Track Photosynthetic Carbon Assimilation Following Induced Stomatal Closure".Geophysical Research Letters 47.15(2020).