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Abstract

Summary

Photosynthesis is among the most important evolutionary innovations in Earth history. It has formed the foundation for most life on Earth today, oxygenated our planet, revolutionised the carbon cycle, and enabled aerobic respiration that eventually led to the evolution of large complex organisms. The most widespread oxygenic photosynthesis pathway involves fixing carbon through the enzyme Ribulose 1,5-bisphosphate carboxylase-oxygenase (RuBisCO) that converts CO into sucrose via the Calvin-Benson cycle. During this process, RuBisCO preferentially uptakes 12CO over 13CO, resulting in stable carbon isotopic fractionation of up to 25–28 ‰.

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/content/papers/10.3997/2214-4609.202333026
2023-09-10
2026-02-12

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Isotope Discrimination During Photosynthesis Remained Constant Across the Phanerozoic
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202333026
/content/papers/10.3997/2214-4609.202333026
/content/papers/10.3997/2214-4609.202333026
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