ArticleJournal of experimental botany2018
CO2 availability influences hydraulic function of C3 and C4 grass leaves.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Trends in stomatal density and size in maize hybrids representing 100 years of long-term breeding for yield.Frontiers in plant science · 2026Article
- Resolving the contrasting leaf hydraulic adaptation of CThe New phytologist · 2025Article
- Elevated [CO2] negatively impacts C4 photosynthesis under heat and water stress without penalizing biomass.Journal of experimental botany · 2023Article
- Climate change and land-use change impacts on future availability of forage grass species for Ethiopian dairy systems.Scientific reports · 2022Article
- Trading water for carbon in the future: Effects of elevated COGlobal change biology · 2022Article
- Intensity and duration of salinity required to form adaptive response in CFrontiers in plant science · 2022Article
- Plant families exhibit unique geographic trends in C4 richness and cover in Australia.PloS one · 2022Article
- Involvement of abscisic acid, ABI5, and PPC2 in plant acclimation to low CO2.Journal of experimental botany · 2020Article
- Life history is a key factor explaining functional trait diversity among subtropical grasses, and its influence differs between C3 and C4 species.Journal of experimental botany · 2019Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Atmospheric CO2 (ca) has increased since the last glacial period, increasing photosynthetic water use efficiency and improving plant productivity. Evolution of C4 photosynthesis at low ca led to decreased stomatal conductance (gs), which provided an advantage over C3 plants that may be reduced by rising ca. Using controlled environments, we determined how increasing ca affects C4 water use relative to C3 plants. Leaf gas exchange and mass per area (LMA) were measured for four C3 and four C4 annual, crop-related grasses at glacial (200 µmol mol-1), ambient (400 µmol mol-1), and super-ambient (640 µmol mol-1) ca. C4 plants had lower gs, which resulted in a water use efficiency advantage at all ca and was broadly consistent with slower stomatal responses to shade, indicating less pressure on leaf water status. At glacial ca, net CO2 assimilation and LMA were lower for C3 than for C4 leaves, and C3 and C4 grasses decreased leaf hydraulic conductance (Kleaf) similarly, but only C4 leaves decreased osmotic potential at turgor loss. Greater carbon availability in C4 leaves at glacial ca generated a different hydraulic adjustment relative to C3 plants. At current and future ca, C4 grasses have advantages over C3 grasses due to lower gs, lower stomatal sensitivity, and higher absolute water use efficiency.
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