ArticleJournal of experimental botany2021
The contribution of PIP2-type aquaporins to photosynthetic response to increased vapour pressure deficit.
Article in Journal of experimental botany, 2021. 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, 27 citations in OpenAlex.
- Inducibility of cyclic electron transport is linked to the transition from C3-C4 to C4 photosynthesis in Flaveria.Plant physiology · 2026Article
- Amino Acid Substitutions in Loop C of Arabidopsis PIP2 Aquaporins Alters the Permeability of COPlant, cell & environment · 2025Article
- Genome-wide identification of APX genes in flax (Linum usitatissimum) and functional characterization of LuAPX12 in osmotic and salinity stress responses.BMC plant biology · 2025Article
- Cooperation of an external carbonic anhydrase and HCO3- transporter supports underwater photosynthesis in submerged leaves of the amphibious plant Hygrophila difformis.Annals of botany · 2024Article
- Water use efficiency across scales: from genes to landscapes.Journal of experimental botany · 2023Review
- Exploring aquaporin functions during changes in leaf water potential.Frontiers in plant science · 2023Review
- Aquaporins and COFrontiers in physiology · 2023Review
- Plasma membrane aquaporins of the PIP1 and PIP2 subfamilies facilitate hydrogen peroxide diffusion into plant roots.BMC plant biology · 2022Article
- Abscisic Acid Negatively Modulates Heat Tolerance in Rolled Leaf Rice by Increasing Leaf Temperature and Regulating Energy Homeostasis.Rice (New York, N.Y.) · 2020Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The roles of different plasma membrane aquaporins (PIPs) in leaf-level gas exchange of Arabidopsis thaliana were examined using knockout mutants. Since multiple Arabidopsis PIPs are implicated in CO2 transport across cell membranes, we focused on identifying the effects of the knockout mutations on photosynthesis, and whether they are mediated through the control of stomatal conductance of water vapour (gs), mesophyll conductance of CO2 (gm), or both. We grew Arabidopsis plants in low and high humidity environments and found that the contribution of PIPs to gs was larger under low air humidity when the evaporative demand was high, whereas any effect of a lack of PIP function was minimal under higher humidity. The pip2;4 knockout mutant had 44% higher gs than wild-type plants under low humidity, which in turn resulted in an increased net photosynthetic rate (Anet). We also observed a 23% increase in whole-plant transpiration (E) for this knockout mutant. The lack of functional plasma membrane aquaporin AtPIP2;5 did not affect gs or E, but resulted in homeostasis of gm despite changes in humidity, indicating a possible role in regulating CO2 membrane permeability. CO2 transport measurements in yeast expressing AtPIP2;5 confirmed that this aquaporin is indeed permeable to CO2.
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