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Limitation of Photosynthesis by Carbon Metabolism: II. O2-Insensitive CO2 Uptake Results from Limitation Of Triose Phosphate Utilization

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Sharkey, Thomas D., Stitt, Mark, Heineke, Dieter, Gerhardt, Richard, Raschke, Klaus, Heldt, Hans W.·1986·Plant Physiology

Abstract

The occurrence of O(2)-insensitive photosynthesis at high quantum flux and moderate temperature in Spinacia oleracea was characterized by analytical gas exchange measurements on intact leaves. In addition photosynthetic metabolite pools were measured in leaves which had been rapidly frozen under defined gas conditions. Upon switching to low O(2) in O(2)-insensitive conditions the ATP/ADP ratio fell dramatically within one minute. The P-glycerate pool increased over the same time. Ribulose bisphosphate initially declined, then increased and exceeded the pool size measured in air. The pools of hexose monophosphates and UDPglucose were higher at a partial pressure of O(2) of 21 millibars than at 210 millibars. These results are consistent with the hypothesis that the rate of sucrose synthesis limited the overall rate of assimilation under O(2)-insensitive conditions.

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Metadata

Authors
Sharkey, T. D., Stitt, M., Heineke, D., Gerhardt, R., Raschke, K., & Heldt, H. W.
Venue
Plant Physiology
Published
1986-08-01
Volume
81
Issue
4
Pages
1123-1129
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W1966431901
Cited by
240
References
0
FWCI
5.25
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Limitation of Photosynthesis by Carbon Metabolism: II. O2-Insensitive CO2 Uptake Results from Limitation Of Triose Phosphate Utilization. https://app.cochat.ai/papers/10.1104/pp.81.4.1123
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Sharkey, T. D., Stitt, M., Heineke, D., Gerhardt, R., Raschke, K., & Heldt, H. W. (1986). Limitation of Photosynthesis by Carbon Metabolism: II. O2-Insensitive CO2 Uptake Results from Limitation Of Triose Phosphate Utilization. Plant Physiology. https://doi.org/10.1104/pp.81.4.1123

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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