Fig 4 - C 3 –C 4 intermediacy in grasses: organelle enrichment and distribution, glycine decarboxylase expression, and the rise of C 2 photosynthesis

Response of net CO2 assimilation rate to intercellular CO2 concentration in Homolepis aturensis, two C2 species (Neurachne minor and Steinchisma hians), a C4 species (Setaria viridis), a C3 species (Dicanthelium oligosanthes), and a C3 species with proto-Kranz anatomy (Steinchisma laxum). Measurement conditions were 31±1 °C and saturating light intensities (1200–1500 µmol m−2 s−1). The curves shown are representative of 2–3 individual A/C i responses per species. The linear regression for points below 100 µmol mol−1 is shown for H. aturensis (dashed line).

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C 3 –C 4 intermediacy in grasses: organelle enrichment and distribution, glycine decarboxylase expression, and the rise of C 2 photosynthesis - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Response-of-net-CO2-assimilation-rate-to-intercellular-CO2-concentration-in-Homolepis_fig10_301280129 [accessed 13 Jun 2025]

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Fig. 4. Response of net CO2 assimilation rate to intercellular CO2 concentration in Homolepis aturensis, two C2 species (Neurachne minor and Steinchisma hians), a C4 species (Setaria viridis), a C3 species (Dicanthelium oligosanthes), and a C3 species with proto-Kranz anatomy (Steinchisma laxum). Measurement conditions were 31±1 °C and saturating light intensities (1200–1500 µmol m−2 s−1). The curves shown are representative of 2–3 individual A/C i responses per species. The linear regression for points below 100 µmol mol−1 is shown for H. aturensis (dashed line).

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<a href="https://www.researchgate.net/figure/Response-of-net-CO2-assimilation-rate-to-intercellular-CO2-concentration-in-Homolepis_fig10_301280129"><img src="https://www.researchgate.net/profile/Tammy-Sage/publication/301280129/figure/fig10/AS:362077903441924@1463337507450/Response-of-net-CO2-assimilation-rate-to-intercellular-CO2-concentration-in-Homolepis.png" alt="Response of net CO2 assimilation rate to intercellular CO2 concentration in Homolepis aturensis, two C2 species (Neurachne minor and Steinchisma hians), a C4 species (Setaria viridis), a C3 species (Dicanthelium oligosanthes), and a C3 species with proto-Kranz anatomy (Steinchisma laxum). Measurement conditions were 31±1 °C and saturating light intensities (1200–1500 µmol m−2 s−1). The curves shown are representative of 2–3 individual A/C i responses per species. The linear regression for points below 100 µmol mol−1 is shown for H. aturensis (dashed line)."/></a>