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| Home > Publications database > The Warburg-effects: basic metabolic processes with reference to cancer development and global photosynthesis |
| Home > Publications database > The Warburg-effects: basic metabolic processes with reference to cancer development and global photosynthesis |
| Journal Article | FZJ-2020-05044 |
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2020
Landes Bioscience
Austin, Tex.
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Please use a persistent id in citations: doi:10.1080/15592324.2020.1776477
Abstract: One century ago (1920), Otto Warburg (1883–1970) discovered that in liquid cultures of unicellular green algae (Chlorella sp.) molecular oxygen (O2) exerts an inhibitory effect on photosynthesis. Decades later, O2 dependent suppression of photosynthetic carbon dioxide (CO2) assimilation (the “green” Warbur geffect) was confirmed on the leaves of seed plants. Here, we summarize the history of this discovery and elucidate the consequences of the photorespiratory pathway in land plants with reference to unpublished CO2 exchange data measured on the leaves of sunflower (Helianthus annuus) plants. In addition, we discuss the inefficiency of the key enzyme Rubisco and analyze data concerning the productivity of C3 vs. C4 crop species (sunflower vs. maize, Zea mays). Warburg’s discovery inaugurated a research agenda in the biochemistry of photosynthetic CO2 assimilation that continues to the present. In addition, we briefly discuss Warburg’s model of metabolic processes in cancer, net primary production (global photosynthesis) with respect to climate change, trees and other land plants as CO2 removers, and potential climate mitigators in the Anthropocene.
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