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Genes Encoding Proteins of the Cation Diffusion Facilitator Family That Confer Manganese Tolerance

Open access
Delhaize, Emmanuel, Kataoka, Tatsuhiko, Hebb, Diane M., White, Rosemary G., Ryan, Peter R.·2003·The Plant Cell

Abstract

The yeast Saccharomyces cerevisiae expressing a cDNA library prepared from Stylosanthes hamata was screened for enhanced Mn(2+) tolerance. From this screen, we identified four related cDNAs that encode membrane-bound proteins of the cation diffusion facilitator (CDF) family. One of these cDNAs (ShMTP1) was investigated in detail and found to confer Mn(2+) tolerance to yeast by internal sequestration rather than by efflux of Mn(2+). Expression of ShMTP1 in a range of yeast mutants suggested that it functions as a proton:Mn(2+) antiporter on the membrane of an internal organelle. Similarly, when expressed in Arabidopsis, ShMTP1 conferred Mn(2+) tolerance through internal sequestration. The ShMTP1 protein fused to green fluorescent protein was localized to the tonoplast of Arabidopsis cells but appeared to localize to the endoplasmic reticulum of yeast. We suggest that the ShMTP1 proteins are members of the CDF family involved in conferring Mn(2+) tolerance and that at least one of these proteins (ShMTP1) confers tolerance by sequestering Mn(2+) into internal organelles.

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Metadata

Authors
Delhaize, E., Kataoka, T., Hebb, D. M., White, R. G., & Ryan, P. R.
Venue
The Plant Cell
Published
2003-05
Volume
15
Issue
5
Pages
1131-1142
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
OpenAlex
W2119012317
Cited by
261
References
2
FWCI
13.00
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Genes Encoding Proteins of the Cation Diffusion Facilitator Family That Confer Manganese Tolerance. https://app.cochat.ai/papers/10.1105/tpc.009134
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Delhaize, E., Kataoka, T., Hebb, D. M., White, R. G., & Ryan, P. R. (2003). Genes Encoding Proteins of the Cation Diffusion Facilitator Family That Confer Manganese Tolerance. The Plant Cell. https://doi.org/10.1105/tpc.009134

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