The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana
Signals leading to mycorrhizal differentiation are largely unknown. We have studied the sensitivity of the root system from plant model Arabidopsis thaliana to hypaphorine, the major indolic compound isolated from the basidiomycetous fungus Pisolithus tinctorius. This fungi establishes ectomycorrhiz...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The American Phytopathological Society
2002-09-01
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| Series: | Molecular Plant-Microbe Interactions |
| Subjects: | |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.9.932 |
| _version_ | 1811287274692804608 |
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| author | David Reboutier Michele Bianchi Mathias Brault Camille Roux Aurélien Dauphin Jean-Pierre Rona Valérie Legué Frédéric Lapeyrie François Bouteau |
| author_facet | David Reboutier Michele Bianchi Mathias Brault Camille Roux Aurélien Dauphin Jean-Pierre Rona Valérie Legué Frédéric Lapeyrie François Bouteau |
| author_sort | David Reboutier |
| collection | DOAJ |
| description | Signals leading to mycorrhizal differentiation are largely unknown. We have studied the sensitivity of the root system from plant model Arabidopsis thaliana to hypaphorine, the major indolic compound isolated from the basidiomycetous fungus Pisolithus tinctorius. This fungi establishes ectomycorrhizas with Eucalyptus globulus. Hypaphorine controls root hair elongation and counteracts the activity of indole-3-acetic acid on root elongation on A. thaliana, as previously reported for the host plant. In addition, we show that hypaphorine counteracts the rapid upregulation by indole-3-acetic acid and 1-naphthalenic-acetic acid of the primary auxin-responsive gene IAA1 and induces a rapid, transient membrane depolarization in root hairs and suspension cells, due to the modulation of anion and K+ currents. These early responses indicate that components necessary for symbiosis-related differentiation events are present in the nonhost plant A. thaliana and provide tools for the dissection of the hypaphorine-auxin interaction. |
| first_indexed | 2024-04-13T03:15:52Z |
| format | Article |
| id | doaj.art-f2c2431d36504023a1f50c7a0c193a24 |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-04-13T03:15:52Z |
| publishDate | 2002-09-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-f2c2431d36504023a1f50c7a0c193a242022-12-22T03:04:55ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062002-09-0115993293810.1094/MPMI.2002.15.9.932The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thalianaDavid ReboutierMichele BianchiMathias BraultCamille RouxAurélien DauphinJean-Pierre RonaValérie LeguéFrédéric LapeyrieFrançois BouteauSignals leading to mycorrhizal differentiation are largely unknown. We have studied the sensitivity of the root system from plant model Arabidopsis thaliana to hypaphorine, the major indolic compound isolated from the basidiomycetous fungus Pisolithus tinctorius. This fungi establishes ectomycorrhizas with Eucalyptus globulus. Hypaphorine controls root hair elongation and counteracts the activity of indole-3-acetic acid on root elongation on A. thaliana, as previously reported for the host plant. In addition, we show that hypaphorine counteracts the rapid upregulation by indole-3-acetic acid and 1-naphthalenic-acetic acid of the primary auxin-responsive gene IAA1 and induces a rapid, transient membrane depolarization in root hairs and suspension cells, due to the modulation of anion and K+ currents. These early responses indicate that components necessary for symbiosis-related differentiation events are present in the nonhost plant A. thaliana and provide tools for the dissection of the hypaphorine-auxin interaction.https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.9.932Ion channels |
| spellingShingle | David Reboutier Michele Bianchi Mathias Brault Camille Roux Aurélien Dauphin Jean-Pierre Rona Valérie Legué Frédéric Lapeyrie François Bouteau The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana Molecular Plant-Microbe Interactions Ion channels |
| title | The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana |
| title_full | The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana |
| title_fullStr | The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana |
| title_full_unstemmed | The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana |
| title_short | The Indolic Compound Hypaphorine Produced by Ectomycorrhizal Fungus Interferes with Auxin Action and Evokes Early Responses in Nonhost Arabidopsis thaliana |
| title_sort | indolic compound hypaphorine produced by ectomycorrhizal fungus interferes with auxin action and evokes early responses in nonhost arabidopsis thaliana |
| topic | Ion channels |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.9.932 |
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