ArticleThe Plant cell2013
Regulation of Arabidopsis leaf hydraulics involves light-dependent phosphorylation of aquaporins in veins.
Article in The Plant cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.
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Who cites it
63 citing papers in PubMed, 174 citations in OpenAlex.
- Transcriptional and post-translational regulation of aquaporins in plants.Stress biology · 2026Review
- Companion cells with high florigen production express other small proteins and reveal a nitrogen-sensitiveeLife · 2025Article
- Companion cells with high florigen production express other small proteins and reveal a nitrogen-sensitivebioRxiv : the preprint server for biology · 2025Article
- The Arabidopsis PIP1;1 Aquaporin Represses Lateral Root Development and Nitrate Uptake Under Low Nitrate Availability.Plant, cell & environment · 2025Article
- PbHsfC1a-coordinates ABA biosynthesis and HPlant biotechnology journal · 2024Article
- Leaf hydraulic maze: Abscisic acid effects on bundle sheath, palisade, and spongy mesophyll conductance.Plant physiology · 2023Article
- Article
- Exploring aquaporin functions during changes in leaf water potential.Frontiers in plant science · 2023Review
- A high-throughput yeast approach to characterize aquaporin permeabilities: Profiling the Arabidopsis PIP aquaporin sub-family.Frontiers in plant science · 2023Article
- Calcium-dependent protein kinase 16 phosphorylates and activates the aquaporin PIP2;2 to regulate reversible flower opening in Gentiana scabra.The Plant cell · 2022Article
- Out of the blue: Phototropins of the leaf vascular bundle sheath mediate the regulation of leaf hydraulic conductance by blue light.The Plant cell · 2022Article
- Optimizing Crop Water Use for Drought and Climate Change Adaptation Requires a Multi-Scale Approach.Frontiers in plant science · 2022Review
- Hormonal and environmental signaling pathways target membrane water transport.Plant physiology · 2021Review
- Water stress assessment on grapevines by using classification and regression trees.Plant direct · 2021Article
- Combined high leaf hydraulic safety and efficiency provides drought tolerance in Caragana species adapted to low mean annual precipitation.The New phytologist · 2021Article
- Large-Scale Phosphoproteomic Study ofInternational journal of molecular sciences · 2020Article
- A Cytoplasmic Receptor-like Kinase Contributes to Salinity Tolerance.Plants (Basel, Switzerland) · 2020Article
- Phosphorylation of plasma membrane aquaporin PIP2;1 in C-terminal affects light-induced stomatal opening in Arabidopsis.Plant signaling & behavior · 2020Article
- Comparing Hydraulics Between Two Grapevine Cultivars Reveals Differences in Stomatal Regulation Under Water Stress and Exogenous ABA Applications.Frontiers in plant science · 2020Article
- Interaction Between the SNARE SYP121 and the Plasma Membrane Aquaporin PIP2;7 Involves Different Protein Domains.Frontiers in plant science · 2020Article
3 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
10 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The water status of plant leaves depends on the efficiency of the water supply, from the vasculature to inner tissues. This process is under hormonal and environmental regulation and involves aquaporin water channels. In Arabidopsis thaliana, the rosette hydraulic conductivity (Kros) is higher in darkness than it is during the day. Knockout plants showed that three plasma membrane intrinsic proteins (PIPs) sharing expression in veins (PIP1;2, PIP2;1, and PIP2;6) contribute to rosette water transport, and PIP2;1 can fully account for Kros responsiveness to darkness. Directed expression of PIP2;1 in veins of a pip2;1 mutant was sufficient to restore Kros. In addition, a positive correlation, in both wild-type and PIP2;1-overexpressing plants, was found between Kros and the osmotic water permeability of protoplasts from the veins but not from the mesophyll. Thus, living cells in veins form a major hydraulic resistance in leaves. Quantitative proteomic analyses showed that light-dependent regulation of Kros is linked to diphosphorylation of PIP2;1 at Ser-280 and Ser-283. Expression in pip2;1 of phosphomimetic and phosphorylation-deficient forms of PIP2;1 demonstrated that phosphorylation at these two sites is necessary for Kros enhancement under darkness. These findings establish how regulation of a single aquaporin isoform in leaf veins critically determines leaf hydraulics.
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