ArticleThe Journal of membrane biology2007
Measuring the osmotic water permeability of the plant protoplast plasma membrane: implication of the nonosmotic volume.
Article in The Journal of membrane biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 24 citations in OpenAlex.
- An effective method for isolation and regeneration of Solanum tuberosum mesophyll protoplasts for transgene-free genome editing.Journal, genetic engineering & biotechnology · 2026Article
- Rapid Single-cell Measurement of Transient Transmembrane Water Flow under Osmotic Gradient.The Journal of membrane biology · 2026Article
- How sterols affect protoplasts plasma membrane water permeability and their volume under osmotic shock.Journal of plant research · 2025Article
- Analysis of sulfide signaling in rice highlights specific drought responses.Journal of experimental botany · 2024Article
- Experimental and conceptual approaches to root water transport.Plant and soil · 2022Review
- Sucrose-induced Receptor Kinase 1 is Modulated by an Interacting Kinase with Short Extracellular Domain.Molecular & cellular proteomics : MCP · 2019Article
- A comparison of aquaporin function in mediating stomatal aperture gating among drought-tolerant and sensitive varieties of rice (Oryza sativa L.).Protoplasma · 2016Article
- Genome-Wide Analysis of the Aquaporin Gene Family in Chickpea (Frontiers in plant science · 2016Article
- The Water to Solute Permeability Ratio Governs the Osmotic Volume Dynamics in Beetroot Vacuoles.Frontiers in plant science · 2016Article
- Mercury-sensitive water channels as possible sensors of water potentials in pollen.Journal of experimental botany · 2013Article
- Sucrose-induced receptor kinase SIRK1 regulates a plasma membrane aquaporin in Arabidopsis.Molecular & cellular proteomics : MCP · 2013Article
- An osmotic model of the growing pollen tube.PloS one · 2012Article
- Osmoregulation in Lilium pollen grains occurs via modulation of the plasma membrane H+ ATPase activity by 14-3-3 proteins.Plant physiology · 2010Article
- Analysis of the source of heterogeneity in the osmotic response of plant membrane vesicles.European biophysics journal : EBJ · 2009Article
- Ectopic expression of Arabidopsis thaliana plasma membrane intrinsic protein 2 aquaporins in lily pollen increases the plasma membrane water permeability of grain but not of tube protoplasts.The New phytologist · 2008Article
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Authors and funding
3 authors at 1 institution in 1 country.
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Abstract
Starting from the original theoretical descriptions of osmotically induced water volume flow in membrane systems, a convenient procedure to determine the osmotic water permeability coefficient (P (os)) and the relative nonosmotic volume (beta) of individual protoplasts is presented. Measurements performed on protoplasts prepared from pollen grains and pollen tubes of Lilium longiflorum cv. Thunb. and from mesophyll cells of Nicotiana tabacum L. and Arabidopsis thaliana revealed low values for the osmotic water permeability coefficient in the range 5-20 microm.s(-1) with significant differences in P (os), depending on whether beta is considered or not. The value of beta was determined using two different methods: by interpolation from Boyle-van't Hoff plots or by fitting a solution of the theoretical equation for water volume flow to the whole volume transients measured during osmotic swelling. The values determined with the second method were less affected by the heterogeneity of the protoplast samples and were around 30% of the respective isoosmotic protoplast volume. It is therefore important to consider nonosmotic volume in the calculation of P (os) as plant protoplasts behave as nonideal osmometers.
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