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Oxidative gating of water channels (aquaporins) in Chara by hydroxyl radicals



Oxidative gating of water channels (aquaporins) in Chara by hydroxyl radicals



Plant Cell and Environment 27(9): 1184-1195



Hydroxyl radicals (*OH) as produced in the Fenton reaction (Fe2+ + H2O2 = Fe3+ + OH- + *OH) have been used to reversibly inhibit aquaporins in the plasma membrane of internodes of Chara corallina. Compared to conventional agents such as HgCl2, *OH proved to be more effective in blocking water channels and was less toxic to the cell. When internodes were treated for 30 min, cell hydraulic conductivity (Lp) decreased by 90% or even more.

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Accession: 012388259

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DOI: 10.1111/j.1365-3040.2004.01226.x



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