ArticlePlant physiology2009
Aquaporin-mediated reduction in maize root hydraulic conductivity impacts cell turgor and leaf elongation even without changing transpiration.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 1 of them a synthesis that pooled it.
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Who cites it
59 citing papers in PubMed, 1 synthesis or guideline pooled it, 183 citations in OpenAlex.
- A common genetic determinism for sensitivities to soil water deficit and evaporative demand: meta-analysis of quantitative trait Loci and introgression lines of maize.Plant physiology · 2011Pooled it
- Triple super phosphate impact on maize root hydraulic conductance.Annals of botany · 2026Article
- Physiological adjustments of temperate tree species and herbs in response to low root temperatures.Tree physiology · 2025Article
- Accumulation Potential of Lead and Cadmium Metals in Maize (Life (Basel, Switzerland) · 2025Article
- Changes in root hydraulic conductivity in wheat (Triticum aestivum L.) in response to salt stress and day/night can best be explained through altered activity of aquaporins.Plant, cell & environment · 2023Article
- Time for a drought experiment: Do you know your plants' water status?The Plant cell · 2023Article
- A Simple Semi-hydroponic System for Studying Iron Homeostasis in Maize.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Plasma membrane aquaporins of the PIP1 and PIP2 subfamilies facilitate hydrogen peroxide diffusion into plant roots.BMC plant biology · 2022Article
- Catastrophic hydraulic failure and tipping points in plants.Plant, cell & environment · 2022Review
- Hypoxia-Induced Aquaporins and Regulation of Redox Homeostasis by a Trans-Plasma Membrane Electron Transport System in Maize Roots.Antioxidants (Basel, Switzerland) · 2022Article
- Impact of polyploidy on plant tolerance to abiotic and biotic stresses.Frontiers in plant science · 2022Review
- Optimizing Crop Water Use for Drought and Climate Change Adaptation Requires a Multi-Scale Approach.Frontiers in plant science · 2022Review
- Physiological roles of Casparian strips and suberin in the transport of water and solutes.The New phytologist · 2021Article
- Non-invasive hydrodynamic imaging in plant roots at cellular resolution.Nature communications · 2021Article
- Manipulating ZmEXPA4 expression ameliorates the drought-induced prolonged anthesis and silking interval in maize.The Plant cell · 2021Article
- Combining cross-section images and modeling tools to create high-resolution root system hydraulic atlases inPlant direct · 2021Article
- Poplar aquaporin PIP1;1 promotes Arabidopsis growth and development.BMC plant biology · 2021Article
- Versatile Roles of Aquaporins in Plant Growth and Development.International journal of molecular sciences · 2020Review
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Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Root hydraulic conductivity in plants (Lp(r)) exhibits large variations in response to abiotic stimuli. In this study, we investigated the impact of dynamic, aquaporin-mediated changes of Lp(r) on leaf growth, water potential, and water flux throughout the plant. For this, we manipulated Lp(r) by subjecting roots to four independent treatments, with aquaporin inhibitors applied either to transpiring maize (Zea mays) plants grown in hydroponics or to detopped root systems for estimation of Lp(r). The treatments were acid load at pH 6.0 and 5.0 and hydrogen peroxide and anoxia applied for 1 to 2 h and subsequently reversed. First, we established that acid load affected cell hydraulic conductivity in maize root cortex. Lp(r) was reduced by all treatments by 31% to 63%, with half-times of about 15 min, and partly recovered when treatments were reversed. Cell turgor measured in the elongating zone of leaves decreased synchronously with Lp(r), and leaf elongation rate closely followed these changes across all treatments in a dose-dependent manner. Leaf and xylem water potentials also followed changes in Lp(r). Stomatal conductance and rates of transpiration and water uptake were not affected by Lp(r) reduction under low evaporative demand. Increased evaporative demand, when combined with acid load at pH 6.0, induced stomatal closure and amplified all other responses without altering their synchrony. Root pressurization reversed the impact of acid load or anoxia on leaf elongation rate and water potential, further indicating that changes in turgor mediated the response of leaf growth to reductions in Lp(r).
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