气候变化领域集成服务门户(CCPortal): A phytophotonic approach to enhanced photosynthesis

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DOI	10.1039/d0ee02960b
	A phytophotonic approach to enhanced photosynthesis
	Kunz L.Y.; Redekop P.; Ort D.R.; R. Grossman A.; Cargnello M.; Majumdar A.
发表日期	2020
ISSN	1754-5692
起始页码	4794
结束页码	4807
卷号	13 期号:12
英文摘要	Photosynthesis is the dominant biotic carbon sink on earth and hence presents an opportunity for enhanced sequestration of CO2. If the average net carbon fixation efficiency of terrestrial plants could be increased by 3.3%, all anthropogenic CO2 accumulating in the atmosphere could instead be reduced and incorporated into terrestrial biomass. Plants make inefficient use of the overly abundant sunlight available to them, a result of having evolved to be competitive and survive highly dynamic environmental conditions rather than maximize photosynthetic productivity. We explore herein a phytophotonic approach to enhanced photosynthesis, whereby sunlight is redistributed by means of luminescent or persistent luminescent (PersL) materials. Phytophotonics has potential at varied scales, ranging from photobioreactors to greenhouses all the way to crops in the field, the latter having the potential to impact planetary CO2 levels. The approach is three-fold: a spectral redistribution to relieve high-light-stress at the top surface of leaves and increasingly drive photosynthesis deeper in leaves and canopies; a minute-scale temporal redistribution to bridge periods of intermittent shade and reduce shock associated with variable light conditions; and a multiple-hour temporal redistribution to shift a fraction of high-intensity midday lighting to evening hours. Based on simulations of photoluminescent materials and light quality experiments with a model algal system, it is shown that while lengthening daylight hours will require significant improvements in PersL materials, the other two approaches show more immediate promise. We demonstrate a means of concentrating PersL light from SrAl2O4:Eu,Dy, approaching levels needed to effectively bridge periods of natural shade, and outline the scientific questions and technical hurdles remaining to realize the benefits of the proposed spectral shift. This journal is © The Royal Society of Chemistry.
语种	英语
scopus关键词	Carbon; Carbon dioxide; Daylight simulation; Luminescence; Plants (botany); Carbon fixation; Environmental conditions; Light conditions; Photoluminescent materials; Photosynthetic productivity; Sequestration of CO2; Spectral redistribution; Terrestrial plants; Photosynthesis; bioreactor; carbon dioxide; carbon fixation; carbon sequestration; energy efficiency; photochemistry; photosynthesis
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162574
作者单位	Department of Chemical Engineering, Stanford University, Stanford, CA 94305, United States; Carnegie Institution for Science, Department of Plant Biology, Stanford, CA 94305, United States; Departments of Crop Sciences and Plant Biology, University of Illinois at Urbana Champaign, Urbana, IL 61801, United States; Departments of Mechanical Engineering and Photon Science and Precourt Institute for Energy, Stanford University, Stanford, CA 94305, United States
推荐引用方式 GB/T 7714	Kunz L.Y.,Redekop P.,Ort D.R.,et al. A phytophotonic approach to enhanced photosynthesis[J],2020,13(12).
APA	Kunz L.Y.,Redekop P.,Ort D.R.,R. Grossman A.,Cargnello M.,&Majumdar A..(2020).A phytophotonic approach to enhanced photosynthesis.Energy and Environmental Science,13(12).
MLA	Kunz L.Y.,et al."A phytophotonic approach to enhanced photosynthesis".Energy and Environmental Science 13.12(2020).