TY - JOUR
T1 - Improving photosynthesis and crop productivity by accelerating recovery from photoprotection
AU - Kromdijk, Johannes
AU - Głowacka, Katarzyna
AU - Leonelli, Lauriebeth
AU - Gabilly, Stéphane T.
AU - Iwai, Masakazu
AU - Niyogi, Krishna K.
AU - Long, Stephen P.
N1 - Funding Information:
We thank D. Drag and B. Harbaugh for plant management in greenhouse and field studies; M. Kobayashi for performing the high-performance liquid chromatography analysis of pigments from the field-grown plants; and K. Kucera, M. Steiner, and S. Gillespie for general assistance during laboratory- and fieldwork. We also thank T. Clemente for initial help with tobacco transformation. This research was supported by Bill and Melinda Gates Foundation grant OPP1060461, titled "RIPE-Realizing increased photosynthetic efficiency for sustainable increases in crop yield." K.K.N. is an investigator of the Howard Hughes Medical Institute and the Gordon and Betty Moore Foundation (through grant GBMF3070). The data reported in this paper have been tabulated in the supplementary materials. Plants and constructs reported are available from the University of Illinois and University of California, Berkeley, for research purposes, subject to the conditions of the Uniform Biological Material Transfer Agreement. The University of Illinois has submitted a provisional patent on behalf of J.K., K.G., L.L., K.K.N., and S.P.L on aspects of the findings.
Publisher Copyright:
Copyright © 2016 by the American Association for the Advancement of Science; all rights reserved.
PY - 2016/11/18
Y1 - 2016/11/18
N2 - Crop leaves in full sunlight dissipate damaging excess absorbed light energy as heat. When sunlit leaves are shaded by clouds or other leaves, this protective dissipation continues for many minutes and reduces photosynthesis. Calculations have shown that this could cost field crops up to 20% of their potential yield. Here, we describe the bioengineering of an accelerated response to natural shading events in Nicotiana (tobacco), resulting in increased leaf carbon dioxide uptake and plant dry matter productivity by about 15% in fluctuating light. Because the photoprotective mechanism that has been altered is common to all flowering plants and crops, the findings provide proof of concept for a route to obtaining a sustainable increase in productivity for food crops and a much-needed yield jump.
AB - Crop leaves in full sunlight dissipate damaging excess absorbed light energy as heat. When sunlit leaves are shaded by clouds or other leaves, this protective dissipation continues for many minutes and reduces photosynthesis. Calculations have shown that this could cost field crops up to 20% of their potential yield. Here, we describe the bioengineering of an accelerated response to natural shading events in Nicotiana (tobacco), resulting in increased leaf carbon dioxide uptake and plant dry matter productivity by about 15% in fluctuating light. Because the photoprotective mechanism that has been altered is common to all flowering plants and crops, the findings provide proof of concept for a route to obtaining a sustainable increase in productivity for food crops and a much-needed yield jump.
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U2 - 10.1126/science.aai8878
DO - 10.1126/science.aai8878
M3 - Article
C2 - 27856901
AN - SCOPUS:84995932315
SN - 0036-8075
VL - 354
SP - 857
EP - 861
JO - Science
JF - Science
IS - 6314
ER -