The plant hormone indoleacetic acid induces invasive growth in <i>Saccharomyces cerevisiae</i>
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- Reeta Prusty
- Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142
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- Paula Grisafi
- Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142
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- Gerald R. Fink
- Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142
抄録
<jats:p> Fungi must recognize plant-specific signals to initiate subsequent morphogenetic events such as filamentation that lead to infection. Here we show that the plant hormone indoleacetic acid (IAA) induces adhesion and filamentation of <jats:italic>Saccharomyces cerevisiae</jats:italic> . Genome expression profiling of cells treated with IAA identified Yap1, a fungal specific transcription factor, as a key mediator of this response. Strains lacking <jats:italic>YAP1</jats:italic> ( <jats:italic>yap1-1</jats:italic> ) are hypersensitive to growth on IAA because they accumulate more IAA than can wild type. Members of a family of transporters the amino acid/auxin:proton symport permeases with homology to <jats:italic>AUX1</jats:italic> , a putative IAA transporter from plants, are up-regulated in the <jats:italic>yap1-1</jats:italic> mutant. Deletion of any one of these transporters makes <jats:italic>yap1-1</jats:italic> mutants more resistant to IAA by decreasing its uptake. The permease mutants are defective in IAA perception and filamentation. The ability of a fungus to perceive a plant hormone that causes it to differentiate into an invasive form has important implications for plant–pathogen interactions. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 101 (12), 4153-4157, 2004-03-09
Proceedings of the National Academy of Sciences
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詳細情報 詳細情報について
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- CRID
- 1360292621197491072
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- NII論文ID
- 30016239766
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- ISSN
- 10916490
- 00278424
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