Abstract
The cotton (Gossypium hirsutum L.) plant responds to a doubling of atmospheric CO2 with almost doubled yield. Gas exchange of leaves was monitored to discover the photosynthetic basis of this large response. Plants were grown in the field in open-top chambers with ambient (nominally 350 μl/l) or enriched (nominally either 500 or 650 μl/l) concentrations of atmospheric CO2. During most of the season, in fully-irrigated plants the relationship between assimilation (A) and intercellular CO2 concentration (ci) was almost linear over an extremely wide range of ci. CO2 enrichment did not alter this relationship or diminish photosynthetic capacity (despite accumulation of starch to very high levels) until very late in the season, when temperature was somewhat lower than at midseason. Stomatal conductance at midseason was very high and insensitive to CO2, leading to estimates of ci above 85% of atmospheric CO2 concentration in both ambient and enriched chambers. Water stress caused A to show a saturation response with respect to ci, and it increased stomatal closure in response to CO2 enrichment. In fully-irrigated plants CO2 enrichment to 650 μl/l increased A more than 70%, but in water-stressed plants enrichment increased A only about 52%. The non-saturating response of A to ci, the failure of CO2 enrichment to decrease photosynthetic capacity for most of the season, and the ability of the leaves to maintain very high ci, form in part the basis for the very large response to CO2 enrichment.
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Abbreviations
- ca-:
-
atmospheric CO2 concentration
- ci-:
-
intercellular CO2 concentration
- A-:
-
rate of assimilation of CO2
- gs-:
-
stomatal conductance to water vapor
- gb-:
-
boundary layer conductance to water vapor
- g′m-:
-
mesophyll conductance to CO2
- VPD-:
-
vapor pressure deficit
- Ψw :
-
leaf water potential
- L-:
-
stomatal limitation to CO2 uptake
References
Azcon-Bieto J (1983) Inhibition of photosynthesis by carbohydrates in wheat leaves. Plant Physiol 73: 681–686
Bergmeyer HU, Bernt E, Schmid F and Stork H (1970) Glucose. In: Bergmeyer HU (ed.) Methoden der Enzymatische Analyse, pp 1163–1168. Weinheim/Bergstrasse: Verlag Chemie
Berry J and Bjorkman O (1980) Photosynthetic response and adaptation to temperature in higher plants. Annu Rev Plant Physiol 31: 491–543
Carter PR and Sheaffer CC (1983) Alfalfa response to soil water deficits. II. Plant water potential, leaf conductance, and canopy temperature relationships. Crop Sci 23: 676–680
DeLucia EH, Sasek TW and Strain BW (1985) Photosynthetic inhibition after long-term exposure to elevated levels of atmospheric carbon dioxide. Photosyn Res 7: 175–184
Farquhar GD and Sharkey TD (1982) Stomatal conductance and photosynthesis. Annu Rev Plant Physiol 33: 317–345
Gaastra P (1959) Photosynthesis of crop plants as influenced by light, carbon dioxide, temperature, and stomatal diffusion resistance. Meded Landbouwhogesch. Wageningen 59: 1–68
Hall AE, Schulze ED and Lange OL (1976) Current perspectives of steady-state stomatal responses to environment. In: Lange OL, Kappen L and Schulze ED (eds) Water and Plant Life: Problems and Modern Approaches, pp. 169–188. Berlin: Springer-Verlag
Hutmacher RB and Krieg DR (1983) Photosynthetic rate control in cotton: stomatal and nonstomatal factors. Plant Physiol 73: 658–661
Kimball BA (1983) Carbon dioxide and agricultural yield: an assemblage and analysis of 430 prior observations. Agron J 75: 779–788
Kimball BA, Mauney JR, Guinn G, Nakayama FS, Pinter PJJr, Clawson KL, Reginato RJ and Idso SB (1983) Effects of increasing atmospheric CO2 concentration on the yield and water use of crops. Number 021, Response of Vegetation to Carbon Dioxide. US Department of Energy, Carbon Dioxide Research Division and the US Department of Agriculture, Agricultural Research Service, Washington, DC
Kimball BA, Mauney JR, Guinn G, Nakayama FS, Pinter JPJr, Clawson KL, Idso SB, Butler GDJr and Radin JW (1984) Effects of increasing atmospheric CO2 concentration on the yield and water use of crops. Number 023, Response of Vegetation to Carbon Dioxide. US Department of Energy, Carbon Dioxide Research Division and the US Department of Agriculture, Agricultural Research Service, Washington, DC
Ku SB and Edwards GE (1977) Oxygen inhibition of photosynthesis. I. Temperature dependence and relation to O2/CO2 solubility ratio, Plant Physiol 59: 986–990
Laing WA, Ogren WL and Hageman RH (1978) Regulation of soybean net photosynthetic CO2 fixation by the interaction of CO2, O2, and ribulose 1, 5-diphosphate carboxylase. Plant Physiol 54: 678–685
Mauney JR, Fry KE and Guinn G (1978) Relationship of photosynthetic rate to growth and fruiting of cotton, soybean, sorghum, and sunflower. Crop Sci 18: 259–263
Mauney JR, Guinn G, Fry KE and Hesketh JD (1979) Correlation of photosynthetic carbon dioxide uptake and carbohydrate accumulation in cotton, soybean, sorghum, and sunflower. Photosynthetica 13: 260–266
Pearcy RW and Bjorkman O (1983) Physiological effects. In: Lemon ER (ed.) CO2 and Plants: The Response of Plants to Rising Levels of Atmospheric Carbon Dioxide, pp. 65–105. Boulder, Colorado: Westview Press
Perry SW, Krieg DR and Hutmacher RB (1983) Photosynthetic rate control in cotton: Photorespiration. Plant Physiol 73: 662–665
Radin JW and Ackerson RC (1981) Water relations of cotton plants under nitrogen deficiency. III. Stomatal conductance, photosynthesis, and abscisic acid accumulation during drought. Plant Physiol 67: 115–119
Radin JW, Mauney JR and Guinn G (1985) Effects of N fertility on plant water relations and stomatal responses to water stress in irrigated cotton. Crop Sci 25: 110–115
Radin JW, Mauney JR and Guinn G (1986) Diurnal osmotic cycling in cotton leaves as an indicator of source-sink balance. Plant Cell Environ 9: 349–352
Sasek TW, DeLucia EH and Strain BR (1985) Reversibility of photosynthetic inhibition in cotton after long-term exposure to elevated CO2 concentrations. Plant Physiol 78: 619–622
Sharkey TD (1985) O2-insensitive photosynthesis in C3 plants, its occurrence and a possible explanation. Plant Physiol 78: 71–75
Wong SC (1979) Elevated atmospheric partial pressure of CO2 and plant growth. I. Interactions of nitrogen nutrition and photosynthetic capacity in C3 and C4 plants. Oecologia 44: 68–74
Woo KC and Wong SC (1983) Inhibition of CO2 assimilation by supraoptimal CO2: Effect of light and temperature. Aust J Plant Physiol 10: 75–85
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Radin, J.W., Kimball, B.A., Hendrix, D.L. et al. Photosynthesis of cotton plants exposed to elevated levels of carbon dioxide in the field. Photosynth Res 12, 191–203 (1987). https://doi.org/10.1007/BF00055120
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DOI: https://doi.org/10.1007/BF00055120