Air temperature modifies the size-enhancing effects of atmospheric CO2 enrichment on sour orange tree leaves

doi:10.1016/0098-8472(93)90075-Q

Environmental and Experimental Botany

Volume 33, Issue 2, April 1993, Pages 293-299

https://doi.org/10.1016/0098-8472(93)90075-Q Get rights and content

Abstract

Every other month for a period of 2 years, leaf area and dry weight measurements were made on the foliage of sour orange trees growing in ambient air and in air enriched with an extra 300 μl/l CO₂. Leaf starch content measurements were made at approximate 2-month intervals for a period of 1 year. The data demonstrated that all three plant parameters were significantly increased by atmospheric CO₂ enrichment, except in the coldest portion of the year. A plot of the ratio of CO₂-enriched leaf dry weight to ambient-treatment leaf dry weight against the mean air temperature of the preceding month revealed this relationship with temperature to be linear. The relationship shows atmospheric CO₂ enrichment to have a negligible effect on leaf dry weight at a mean air temperature of approximately 5°C. At a mean air temperature of 35°C, however, it shows individual CO₂-enriched leaves of our experiment to weigh 40% more than their ambient-treatment counterparts. This phenomenon helps to explain the vastly different effects of atmospheric CO₂ enrichment that have been reported for a number of diverse ecosystems.

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Air temperature modifies the size-enhancing effects of atmospheric CO2 enrichment on sour orange tree leaves

Abstract

Agric. Ecosys. Envir.

Agric. For. Met.

Aquat. Bot.

Envir. exp. Bot.

Agric. For. Met.

Agric. For. Met.

Agric. Ecosys. Envir.

Sci. Hort.

Effects of air temperature on atmospheric CO2-plant growth relationships

Effects of source-sink relations on photosynthetic acclimation to elevated CO2

Pl. Cell Envir.

Plant life in a CO2-rich world

Sci. Am.

Reserve mobilization and starch formation in soybean (Glycine max) cotyledons in relation to seedling growth

Physiologia Pl.

Elevated atmospheric CO2 effects on belowground processes in C3 and C4 estuarine marsh communities

Ecology

Growth and senescence in plant communities exposed to elevated CO2 concentrations in an estuarine marsh

Oecologia

Nitrogen and carbon dynamics in C3 and C4 estuarine marsh plants grown under elevated CO2in situ

Oecologia

Canopy photosynthesis of crops and native plant communities exposed to long-term elevated CO2

Pl. Cell Envir.

The interaction of rising CO2 and temperatures with water use efficiency

Pl. Cell Envir.

Carbon balance in tussock tundra under ambient and elevated atmospheric CO2

Oecologia

Air temperature modifies the size-enhancing effects of atmospheric CO₂ enrichment on sour orange tree leaves

Effects of air temperature on atmospheric CO₂-plant growth relationships

Effects of source-sink relations on photosynthetic acclimation to elevated CO₂

Plant life in a CO₂-rich world

Elevated atmospheric CO₂ effects on belowground processes in C₃ and C₄ estuarine marsh communities

Growth and senescence in plant communities exposed to elevated CO₂ concentrations in an estuarine marsh

Nitrogen and carbon dynamics in C₃ and C₄ estuarine marsh plants grown under elevated CO₂in situ

Canopy photosynthesis of crops and native plant communities exposed to long-term elevated CO₂

The interaction of rising CO₂ and temperatures with water use efficiency

Carbon balance in tussock tundra under ambient and elevated atmospheric CO₂