FEBS Letters
Volume 582, Issue 11 , Pages 1625-1628, 14 May 2008

The Arabidopsis thaliana aquaglyceroporin AtNIP7;1 is a pathway for arsenite uptake

Edited by Julian Schroeder

Biology Department Area 9, University of York, York YO10 5DD, United Kingdom

Received 5 March 2008; received in revised form 11 April 2008; accepted 11 April 2008. published online 22 April 2008.

Abstract 

We studied the effect of loss of function in the NIP subfamily II in Arabidopsis thaliana to assess their potential role(s) in arsenite (AsIII) uptake. Loss of function in AtNIP7;1 led to increased plant tolerance to AsIII and reduced total As in planta. AtNIP7;1 expression in various yeast backgrounds increased AsIII sensitivity. In the acr3Δ yeast genotype, AtNIP7;1 caused a moderate increase in AsV tolerance. Short-term As uptake in fsp1Δ expressing AtNIP7;1 was significantly larger than that in the empty vector control.

The data suggest that AtNIP7;1 can mediate AsIII transport and contributes to AsIII uptake in plants.

Keywords: Arsenic, Arsenite, Aquaporin, Uptake, Arabidopsis thaliana

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PII: S0014-5793(08)00341-4

doi:10.1016/j.febslet.2008.04.022

FEBS Letters
Volume 582, Issue 11 , Pages 1625-1628, 14 May 2008

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