{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T11:23:36Z","timestamp":1740137016174,"version":"3.37.3"},"reference-count":22,"publisher":"Springer Science and Business Media LLC","issue":"2","license":[{"start":{"date-parts":[[2024,10,23]],"date-time":"2024-10-23T00:00:00Z","timestamp":1729641600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,10,23]],"date-time":"2024-10-23T00:00:00Z","timestamp":1729641600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100012330","name":"Okayama University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100012330","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Protoplasma"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:p>In the cells of <jats:italic>Chara corallina<\/jats:italic>, permeant monohydric alcohols including methanol, ethanol and 1-propanol increased the hydraulic resistance of the membrane (<jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup>). We found that the relative value of the hydraulic resistance (<jats:sup>r<\/jats:sup>\n            <jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup>) was linearly dependent on the concentration (<jats:italic>C<\/jats:italic>\n            <jats:sub>s<\/jats:sub>) of the alcohol. The relationship is expressed in the equation: <jats:sup>r<\/jats:sup>\n            <jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup>\u2009=\u2009\u03c1<jats:sub>m<\/jats:sub>\n            <jats:italic>C<\/jats:italic>\n            <jats:sub>s<\/jats:sub>\u2009+\u20091, where \u03c1<jats:sub>m<\/jats:sub> is the hydraulic resistance modifier coefficient of the membrane. Ye et al. (2004) showed that membrane-permeant glycol ethers also increased <jats:italic>L<\/jats:italic>p<jats:sup>\u22121<\/jats:sup>. We used their data to estimate <jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup> and <jats:sup>r<\/jats:sup>\n            <jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup>. The values of <jats:sup>r<\/jats:sup>\n            <jats:italic>L<\/jats:italic>p<jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup> fit the above relation we found for alcohols. When we plotted the \u03c1<jats:sub>m<\/jats:sub> values of all the permeant alcohols and glycol ethers against their molecular weights (MW), we obtained a linear curve with a slope of 0.014\u00a0M<jats:sup>\u22121<\/jats:sup>\/MW and with a correlation coefficient of 0.99. We analyzed the influence of the permeant solutes on the relative hydraulic resistance of the membrane (<jats:sup>r<\/jats:sup>\n            <jats:italic>Lp<\/jats:italic>\n            <jats:sub>m<\/jats:sub>\n            <jats:sup>\u22121<\/jats:sup>) as a function of the external (\u03c0<jats:sub>0<\/jats:sub>) and internal (\u03c0<jats:sub>i<\/jats:sub>) osmotic pressures. The analysis showed that the hydraulic resistance modifier coefficients (\u03c1<jats:sub>m<\/jats:sub>) were linearly related to the MW of the permeant solutes with a slope of 0.012\u00a0M<jats:sup>\u22121<\/jats:sup>\/MW and with a correlation coefficient of 0.84. The linear relationship between the effects of permeating solutes on the hydraulic resistance modifier coefficient (\u03c1<jats:sub>m<\/jats:sub>) and the MW can be explained in terms of the effect of the effective osmotic pressure on the hydraulic conductivity of water channels. The result of the analysis suggests that the osmotic pressure and not the size of the permeant solute as proposed by (Ye et al., J Exp Bot 55:449\u2013461, 2004) is the decisive factor in a solute\u2019s influence on hydraulic conductivity. Thus, characean water channels (aquaporins) respond to permeant solutes with essentially the same mechanism as to impermeant solutes.<\/jats:p>","DOI":"10.1007\/s00709-024-02000-6","type":"journal-article","created":{"date-parts":[[2024,10,23]],"date-time":"2024-10-23T10:02:03Z","timestamp":1729677723000},"page":"385-395","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Analysis of the effect of permeant solutes on the hydraulic resistance of the plasma membrane in cells of Chara corallina"],"prefix":"10.1007","volume":"262","author":[{"given":"Masashi","family":"Tazawa","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Randy","family":"Wayne","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8264-3063","authenticated-orcid":false,"given":"Maki","family":"Katsuhara","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,10,23]]},"reference":[{"key":"2000_CR1","first-page":"102","volume":"79","author":"J Dainty","year":"1964","unstructured":"Dainty J, Ginzburg BZ (1964a) The measurement of hydraulic conductivity (osmotic permeability to water) of internodal characean cells by means of transcellular osmosis. 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