Sunflower Leaf Structure Affects Chlorophyll a Fluorescence Induction Kinetics In Vivo
Abstract
:1. Introduction
2. Results
2.1. Differences in the CFI Curves between the Adaxial and Abaxial Sides of Sunflower Leaves
2.2. Effects of Enhanced Light Transmission inside Plant Leaves on the CFI Curves
2.3. Effects of Growth Irradiances on the CFI Curves
2.4. Differences in Leaf Microstructure and Photosynthetic Rates
3. Discussion
4. Materials and Methods
4.1. Plant Materials
4.2. Determination of Gas Exchange
4.3. Determination of CFI
4.4. Enhancement of Light Transmission within Leaves
4.5. Determination of Leaf Structure
4.6. Statistical Analysis
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Formulae and Terms | Illustrations |
---|---|
Fo | Minimal recorded fluorescence intensity |
Fm | Maximal recorded fluorescence intensity |
VJ ≡ (FJ − Fo)/(Fm − Fo) | Relative variable fluorescence intensity at the J-step |
VI ≡ (FI − Fo)/(Fm − Fo) | Relative variable fluorescence intensity at the I-step |
dV/dto | QA maximum reduction rate |
φPo ≡ TRo/ABS = [1 − (Fo/Fm)] | Maximum quantum yield for primary photochemistry (at t = 0) |
ψo ≡ ETo/TRo = (1 − VJ) | Probability that a trapped exciton moves an electron into the electron transport chain beyond QA− (at t = 0) |
φEo ≡ ETo/ABS = [1 − (Fo/Fm)]·ψo | Quantum yield for electron transport (at t = 0) |
φDo ≡ 1 − φPo = (Fo/Fm) | Quantum yield (at t = 0) of energy dissipation |
ABS/RC = M0 (1/VJ) (1/φPo) | Absorption flux per RC |
TRo/RC = M0 (1/VJ) | Trapped energy flux per RC (at t = 0) |
ETo/RC = M0 (1/VJ) ψo | Electron transport flux per RC (at t = 0) |
DIo/RC = (ABS/RC) − (TRo/RC) | Dissipated energy flux per RC (at t = 0) |
ABS/CSo ≈ Fo | Absorption flux per CS (at t = 0) |
TRo/CSo = φPo·(ABS/CSo) | Trapped energy flux per CS (at t = 0) |
ETo/CSo = φEo·(ABS/CSo) | Electron transport flux per CS (at t = 0) |
DIo/CSo = (ABS/CSo) − (TRo/CSo) | Dissipated energy flux per CS (at t = 0) |
Density of reaction centers | |
RC/CSo = φPo·(VJ/Mo)·(ABS/CSo) | Density of RCs (QA-reducing PSII reaction centers) |
PICS ≡ (RC/CSo) [φPo/(1 − φPo)] [ψo/(1 − ψo)] | Performance index on cross section basis (at t = 0) |
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Zou, Q.-Q.; Liu, D.-H.; Sang, M.; Jiang, C.-D. Sunflower Leaf Structure Affects Chlorophyll a Fluorescence Induction Kinetics In Vivo. Int. J. Mol. Sci. 2022, 23, 14996. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms232314996
Zou Q-Q, Liu D-H, Sang M, Jiang C-D. Sunflower Leaf Structure Affects Chlorophyll a Fluorescence Induction Kinetics In Vivo. International Journal of Molecular Sciences. 2022; 23(23):14996. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms232314996
Chicago/Turabian StyleZou, Qing-Qing, Dong-Huan Liu, Min Sang, and Chuang-Dao Jiang. 2022. "Sunflower Leaf Structure Affects Chlorophyll a Fluorescence Induction Kinetics In Vivo" International Journal of Molecular Sciences 23, no. 23: 14996. https://0-doi-org.brum.beds.ac.uk/10.3390/ijms232314996