Next Article in Journal
Stiffness-Oriented Structure Topology Optimization for Hinge-Free Compliant Mechanisms Design
Previous Article in Journal
Criticality Analysis Based on Reliability and Failure Propagation Effect for a Complex Wastewater Treatment Plant
 
 
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Far-Red Chlorophyll Fluorescence Radiance Tracks Photosynthetic Carbon Assimilation Efficiency of Dark Reactions

1
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Xianyang 712100, China
2
College of Natural Resources and Environment, Northwest A&F University, Yangling, Xianyang 712100, China
3
College of Forestry, Northwest A&F University, Yangling, Xianyang 712100, China
4
Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
5
School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(22), 10821; https://doi.org/10.3390/app112210821
Submission received: 9 October 2021 / Revised: 8 November 2021 / Accepted: 11 November 2021 / Published: 16 November 2021
(This article belongs to the Section Agricultural Science and Technology)

Abstract

Solar-induced chlorophyll fluorescence (SIF) observations from space have shown close relationships with terrestrial photosynthesis rates. SIF originates from the light reactions of photosynthesis, whereas carbon fixation takes place during the dark reactions of photosynthesis. Questions remain regarding whether SIF is able to track changes in the efficiency of the dark reactions in photosynthesis. Using concurrent measurements of leaf-scale gas exchange, pulse amplitude-modulated (PAM) fluorescence, and fluorescence spectral radiances, we found that both far-red fluorescence radiances and PAM fluorescence yields responded rapidly to changes in photosynthetic carbon assimilation due to changes in environmental factors or induced stomatal closure under constant light conditions. Uncertainties in outgoing and incoming irradiance mismatch for SIF measurements may very likely obscure the contributions of the dark reactions, thereby causing the inconsistent findings previously reported, which were no change in far-red SIF and PAM fluorescence yields after clear reductions in the photosynthetic carbon assimilation efficiency of dark reactions. Our results confirm that high-quality SIF measurements have the potential to provide insights into the dark reactions of photosynthesis. This study is particularly relevant for better interpreting satellite SIF observations that are obtained under roughly constant overpass times and relatively stable light intensities.
Keywords: solar-induced chlorophyll fluorescence; gross primary productivity; far-red chlorophyll fluorescence; dark reactions; CO2 concentration; air temperature; stomatal closure solar-induced chlorophyll fluorescence; gross primary productivity; far-red chlorophyll fluorescence; dark reactions; CO2 concentration; air temperature; stomatal closure

Share and Cite

MDPI and ACS Style

Liu, Z.; Guo, C.; Bai, Y.; Zhang, N.; Yu, Q.; Zhao, F.; Lu, X. Far-Red Chlorophyll Fluorescence Radiance Tracks Photosynthetic Carbon Assimilation Efficiency of Dark Reactions. Appl. Sci. 2021, 11, 10821. https://doi.org/10.3390/app112210821

AMA Style

Liu Z, Guo C, Bai Y, Zhang N, Yu Q, Zhao F, Lu X. Far-Red Chlorophyll Fluorescence Radiance Tracks Photosynthetic Carbon Assimilation Efficiency of Dark Reactions. Applied Sciences. 2021; 11(22):10821. https://doi.org/10.3390/app112210821

Chicago/Turabian Style

Liu, Zhunqiao, Chenhui Guo, Yanwen Bai, Nina Zhang, Qiang Yu, Feng Zhao, and Xiaoliang Lu. 2021. "Far-Red Chlorophyll Fluorescence Radiance Tracks Photosynthetic Carbon Assimilation Efficiency of Dark Reactions" Applied Sciences 11, no. 22: 10821. https://doi.org/10.3390/app112210821

APA Style

Liu, Z., Guo, C., Bai, Y., Zhang, N., Yu, Q., Zhao, F., & Lu, X. (2021). Far-Red Chlorophyll Fluorescence Radiance Tracks Photosynthetic Carbon Assimilation Efficiency of Dark Reactions. Applied Sciences, 11(22), 10821. https://doi.org/10.3390/app112210821

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop