title: Impacts of elevated atmospheric CO₂ on nutrient content of important food crops.
abstract: One of the many ways that climate change may affect human health is by altering the nutrient content of food crops. However, previous attempts to study the effects of increased atmospheric CO2 on crop nutrition have been limited by small sample sizes and/or artificial growing conditions. Here we present data from a meta-analysis of the nutritional contents of the edible portions of 41 cultivars of six major crop species grown using free-air CO2 enrichment (FACE) technology to expose crops to ambient and elevated CO2 concentrations in otherwise normal field cultivation conditions. This data, collected across three continents, represents over ten times more data on the nutrient content of crops grown in FACE experiments than was previously available. We expect it to be deeply useful to future studies, such as efforts to understand the impacts of elevated atmospheric CO2 on crop macro- and micronutrient concentrations, or attempts to alleviate harmful effects of these changes for the billions of people who depend on these crops for essential nutrients.
authors.affiliation: Department of Biology, University of Pennsylvania , Philadelphia, Pennsylvania 19104, USA.
authors.forename: Lee H
authors.initials: LH
authors.lastname: Dietterich
authors.affiliation: Department of Environmental Health, Harvard T. H. Chan School of Public Health , Boston, Massachusetts 02215, USA.
authors.forename: Antonella
authors.initials: A
authors.lastname: Zanobetti
authors.affiliation: The Department of Geography and Environmental Development, Ben-Gurion University of the Negev , PO Box 653, Beer Sheva, Israel.
authors.forename: Itai
authors.initials: I
authors.lastname: Kloog
authors.affiliation: Department of Earth and Planetary Science, Harvard University , Cambridge, Massachusetts 02138, USA.
authors.forename: Peter
authors.initials: P
authors.lastname: Huybers
authors.affiliation: Department of Plant Biology and Institute for Genomic Biology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, USA.
authors.forename: Andrew D B
authors.initials: AD
authors.lastname: Leakey
authors.affiliation: Department of Plant Sciences, University of California at Davis , Davis, California 95616, USA.
authors.forename: Arnold J
authors.initials: AJ
authors.lastname: Bloom
authors.affiliation: Department of Land, Air, & Water Resources, University of California at Davis , Davis, California 95616, USA.
authors.forename: Eli
authors.initials: E
authors.lastname: Carlisle
authors.affiliation: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne , Victoria 3010, Australia ; Faculty of Science and Technology, Centre for Environmental Management, Federation University, University Drive , Mount Helen, Victoria 3350, Australia.
authors.forename: Nimesha
authors.initials: N
authors.lastname: Fernando
authors.affiliation: Department of Economic Development, Jobs, Transport and Resources , Horsham, Victoria 3001, Australia.
authors.forename: Glenn
authors.initials: G
authors.lastname: Fitzgerald
authors.affiliation: Agro-Meteorology Division, National Institute for Agro-Environmental Sciences , Tsukuba, Ibaraki 305-8604, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Hasegawa
authors.affiliation: Department of Organismic and Evolutionary Biology, Harvard University , Cambridge, Massachusetts 02138, USA.
authors.forename: N Michele
authors.initials: NM
authors.lastname: Holbrook
authors.affiliation: United States Department of Agriculture, Agricultural Research Service, Soybean/Maize Germplasm, Pathology, and Genetics Research Unit, Department of Crop Sciences, University of Illinois , Urbana, Illinois 61801, USA.
authors.forename: Randall L
authors.initials: RL
authors.lastname: Nelson
authors.affiliation: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne , Victoria 3010, Australia ; International Plant Nutrition Institute , 54 Florence St, Horsham, Victoria 3400, Australia.
authors.forename: Robert
authors.initials: R
authors.lastname: Norton
authors.affiliation: School of Plant Sciences, University of Arizona, Tucson , Arizona 85721, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Ottman
authors.affiliation: United States Department of Agriculture Agricultural Research Service , Aberdeen, Idaho, 83210, USA.
authors.forename: Victor
authors.initials: V
authors.lastname: Raboy
authors.affiliation: Agro-Meteorology Division, National Institute for Agro-Environmental Sciences , Tsukuba, Ibaraki 305-8604, Japan.
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Sakai
authors.affiliation: Compa Industries, Inc., Los Alamos National Laboratory Environmental Protection Division , Los Alamos, New Mexico 87545, USA.
authors.forename: Karla A
authors.initials: KA
authors.lastname: Sartor
authors.affiliation: Department of Environmental Health, Harvard T. H. Chan School of Public Health , Boston, Massachusetts 02215, USA.
authors.forename: Joel
authors.initials: J
authors.lastname: Schwartz
authors.affiliation: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne , Victoria 3010, Australia ; Center for Crop Health, University of Southern Queensland , Toowoomba, QLD 4350, Australia.
authors.forename: Saman
authors.initials: S
authors.lastname: Seneweera
authors.affiliation: Agro-Meteorology Division, National Institute for Agro-Environmental Sciences , Tsukuba, Ibaraki 305-8604, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Usui
authors.affiliation: Hokuriku Research Center, NARO Agricultural Research Center, National Agricultural and Food Research Organization , Joetsu, Niigata 943-0193, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yoshinaga
authors.affiliation: Department of Environmental Health, Harvard T. H. Chan School of Public Health , Boston, Massachusetts 02215, USA ; Harvard University Center for the Environment, Cambridge , Massachusetts 02138, USA.
authors.forename: Samuel S
authors.initials: SS
authors.lastname: Myers
mesh_terms: D000383:Agriculture; D002245:Carbon Dioxide / Q000009:adverse effects; D057231:Climate Change; D018556:Crops, Agricultural; D005502:Food; D010945:Plants, Edible
chemical_list: D002245:Carbon Dioxide