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EIR1, a root-specific protein involved in auxin transport, is required for gravitropism in Arabidopsis thaliana

Open access
Luschnig, Christian, Gaxiola, Roberto A., Grisafi, Paula, Fink, Gerald R.·1998·Genes & Development

Abstract

The EIR1 gene of Arabidopsis is a member of a family of plant genes with similarities to bacterial membrane transporters. This gene is expressed only in the root, which is consistent with the phenotypes of the eir1 mutants—the roots are agravitropic and have a reduced sensitivity to ethylene. The roots of eir1 mutants are also insensitive to the excess auxin produced by alf1-1 and fail to induce an auxin-inducible gene in the expansion zone. Although they fail to respond to internally generated auxin, they respond normally to externally applied auxin. Expression of the EIR1 gene in Saccharomyces cerevisiae confers resistance to fluorinated indolic compounds. Taken together, these data suggest that the EIR1 protein has a root-specific role in the transport of auxin.

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Metadata

Authors
Luschnig, C., Gaxiola, R. A., Grisafi, P., & Fink, G. R.
Venue
Genes & Development
Published
1998-07-15
Volume
12
Issue
14
Pages
2175-2187
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2099213570
Cited by
824
References
1
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: EIR1, a root-specific protein involved in auxin transport, is required for gravitropism in Arabidopsis thaliana. https://app.cochat.ai/papers/10.1101/gad.12.14.2175
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Luschnig, C., Gaxiola, R. A., Grisafi, P., & Fink, G. R. (1998). EIR1, a root-specific protein involved in auxin transport, is required for gravitropism in Arabidopsis thaliana. Genes & Development. https://doi.org/10.1101/gad.12.14.2175

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