Photosynthesis and Growth of Pennisetum centrasiaticum (C4) is Superior to Calamagrostis pseudophragmites (C3) during Drought and Recovery
Abstract
:1. Introduction
2. Results
2.1. Climatic Conditions and Water Status
2.2. Gas Exchange Characteristics
2.3. Chlorophyll Fluorescence Characteristics
2.4. Biomass Characteristics
3. Discussion
3.1. Photosynthetic Adjustment and Biomass Response to Drought and Recovery for Two Psammophytes
3.2. Differentiation of Photosynthetic Performance and Biomass to Drought and Rewatering between Two Psammophytes
4. Materials and Methods
4.1. Soil Moisture and Climatic Conditions
4.2. Leaf Gas Exchange Measurement
4.3. Chlorophyll Fluorescence Measurement
4.4. Analysis of the Chlorophyll Fluorescence Transients: JIP-test
4.5. Biomass Measurement
4.6. Statistic Analysis
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Species and Treatment | Above-Ground Biomass (g) | Below-Ground Biomass (g) | Total Biomass (g) | Root: Shoot Ratio |
---|---|---|---|---|
P. centrasiaticum, well-watered | 21.86 ± 3.07 Aa | 35.72 ± 2.54 Aa | 57.58 ± 5.11 Aa | 1.69 ± 0.21 Aa |
P. centrasiaticum, drought-stressed | 19.45 ± 3.28 Aa | 16.74 ± 1.24 Ba | 36.19 ± 2.08 Ba | 0.93 ± 0.19 Bb |
C. pseudophragmites, well-watered | 18.73 ± 1.09 Aa | 17.05 ± 2.87 Ab | 35.78 ± 2.99 Ab | 0.92 ± 0.17 Bb |
C. pseudophragmites, drought-stressed | 5.07 ± 0.48 Bb | 7.12 ± 0.47 Bb | 12.19 ± 0.60 Bb | 1.44 ± 0.20 Aa |
Species and Treatment | Pn, Biomass (Above-Ground, Below-ground and Total) | WUE | Root: Shoot Ratio | DI0/CS0 | gs, FV/FM and ET0/CS0 | Ci |
---|---|---|---|---|---|---|
P. centrasiaticum, well-watered | high | high | high | high | low | low |
P. centrasiaticum, drought-stressed | reduce less | reduce | reduce | increase | reduce | increase more |
C. pseudophragmites, well-watered | low | low | low | low | high | high |
C. pseudophragmites, drought-stressed | reduce more | reduce | increase | increase | reduce | reduce less |
Terms and Formulae | Explanations |
---|---|
FV/FM = (TR0/RC)/(ABS/RC) = TR0/ABS = [1–(F0/FM)] | Maximum quantum yield for PS II |
ET0/CS0= (ET0/RC)/(ABS/RC)·(ABS/CS0) = (ET0/ABS)·(ABS/CS0) | Electron transport flux per CS |
DI0/CS0= (ABS/CS0)–(TR0/CS0) | Dissipated energy flux per CS |
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Luo, Y.; Zhao, X.; Allington, G.R.H.; Wang, L.; Huang, W.; Zhang, R.; Luo, Y.; Xu, Z. Photosynthesis and Growth of Pennisetum centrasiaticum (C4) is Superior to Calamagrostis pseudophragmites (C3) during Drought and Recovery. Plants 2020, 9, 991. https://doi.org/10.3390/plants9080991
Luo Y, Zhao X, Allington GRH, Wang L, Huang W, Zhang R, Luo Y, Xu Z. Photosynthesis and Growth of Pennisetum centrasiaticum (C4) is Superior to Calamagrostis pseudophragmites (C3) during Drought and Recovery. Plants. 2020; 9(8):991. https://doi.org/10.3390/plants9080991
Chicago/Turabian StyleLuo, Yayong, Xueyong Zhao, Ginger R. H. Allington, Lilong Wang, Wenda Huang, Rui Zhang, Yongqing Luo, and Zhuwen Xu. 2020. "Photosynthesis and Growth of Pennisetum centrasiaticum (C4) is Superior to Calamagrostis pseudophragmites (C3) during Drought and Recovery" Plants 9, no. 8: 991. https://doi.org/10.3390/plants9080991