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Attributing differences of solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationships between two C4 crops: corn and miscanthus

Wu, Genghong and Guan, Kaiyu and Jiang, Chongya and Kimm, Hyungsuk and Miao, Guofang and Bernacchi, Carl J. and Moore, Caitlin E. and Ainsworth, Elizabeth A. and Yang, Xi and Berry, Joseph A. and Frankenberg, Christian and Chen, Min (2022) Attributing differences of solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationships between two C4 crops: corn and miscanthus. Agricultural and Forest Meteorology, 323 . Art. No. 109046. ISSN 0168-1923. doi:10.1016/j.agrformet.2022.109046.

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There remains limited information to characterize the solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationship in C4 cropping systems. The annual C4 crop corn and perennial C4 crop miscanthus differ in phenology, canopy structure and leaf physiology. Investigating the SIF-GPP relationships in these species could deepen our understanding of SIF-GPP relationships within C4 crops. Using in situ canopy SIF and GPP measurements for both species along with leaf-level measurements, we found considerable differences in the SIF-GPP relationships between corn and miscanthus, with a stronger SIF-GPP relationship and higher slope of SIF-GPP observed in corn compared to miscanthus. These differences were mainly caused by leaf physiology. For miscanthus, high non-photochemical quenching (NPQ) under high light, temperature and water vapor deficit (VPD) conditions caused a large decline of fluorescence yield (Φ_F), which further led to a SIF midday depression and weakened the SIF-GPP relationship. The larger slope in corn than miscanthus was mainly due to its higher GPP in mid-summer, largely attributed to the higher leaf photosynthesis and less NPQ. Our results demonstrated variation of the SIF-GPP relationship within C4 crops and highlighted the importance of leaf physiology in determining canopy SIF behaviors and SIF-GPP relationships.

Item Type:Article
Related URLs:
URLURL TypeDescription Information
Wu, Genghong0000-0002-6227-6390
Guan, Kaiyu0000-0002-3499-6382
Jiang, Chongya0000-0002-1660-7320
Kimm, Hyungsuk0000-0001-8189-0874
Miao, Guofang0000-0001-5532-932X
Bernacchi, Carl J.0000-0002-2397-425X
Moore, Caitlin E.0000-0003-0993-4419
Ainsworth, Elizabeth A.0000-0002-3199-8999
Yang, Xi0000-0002-5095-6735
Berry, Joseph A.0000-0002-5849-6438
Frankenberg, Christian0000-0002-0546-5857
Additional Information:© 2022 Elsevier. Received 2 January 2022, Revised 19 May 2022, Accepted 6 June 2022, Available online 21 June 2022, Version of Record 21 June 2022. This work was funded by the DOE Center for Advanced Bioenergy and Bioproducts Innovation (U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research under Award Number DE-SC0018420). Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the U.S. Department of Energy. GW and KG also acknowledged the support from NASA Future Investigators in NASA Earth and Space Science and Technology (FINESST) Program. GW, KG, and HK, acknowledged the support from NASA Carbon Monitoring System program managed by the NASA Terrestrial Ecology Program. We thank M. Pilar Cendrero-Mateo for sharing the iFLD code for SIF retrieval. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0018420
NASA Earth and Space Science FellowshipUNSPECIFIED
Subject Keywords:C4 crops; Gross primary productivity; Leaf absorbed energy partition; Photosynthesis; Solar-induced chlorophyll fluorescence
Record Number:CaltechAUTHORS:20220705-346555000
Persistent URL:
Official Citation:Genghong Wu, Kaiyu Guan, Chongya Jiang, Hyungsuk Kimm, Guofang Miao, Carl J. Bernacchi, Caitlin E. Moore, Elizabeth A. Ainsworth, Xi Yang, Joseph A. Berry, Christian Frankenberg, Min Chen, Attributing differences of solar-induced chlorophyll fluorescence (SIF)-gross primary production (GPP) relationships between two C4 crops: corn and miscanthus, Agricultural and Forest Meteorology, Volume 323, 2022, 109046, ISSN 0168-1923,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115329
Deposited By: George Porter
Deposited On:08 Jul 2022 23:04
Last Modified:25 Jul 2022 23:14

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