Oomycete Plant Pathogens Use Electric Fields to Target Roots
Plant roots generate electrical currents and associated electrical fields as a consequence of electrogenic ion transport at the root surface. Here we demonstrate that the attraction of swimming zoospores of oomycete plant pathogens to plant roots is mediated in part by electrotaxis in natural root-g...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The American Phytopathological Society
2002-08-01
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| Series: | Molecular Plant-Microbe Interactions |
| Subjects: | |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.8.790 |
| _version_ | 1818915195644280832 |
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| author | P. van West B. M. Morris B. Reid A. A. Appiah M. C. Osborne T. A. Campbell S. J. Shepherd N. A. R. Gow |
| author_facet | P. van West B. M. Morris B. Reid A. A. Appiah M. C. Osborne T. A. Campbell S. J. Shepherd N. A. R. Gow |
| author_sort | P. van West |
| collection | DOAJ |
| description | Plant roots generate electrical currents and associated electrical fields as a consequence of electrogenic ion transport at the root surface. Here we demonstrate that the attraction of swimming zoospores of oomycete plant pathogens to plant roots is mediated in part by electrotaxis in natural root-generated electric fields. The zones of accumulation of anode- or cathode-seeking zoospores adjacent to intact and wounded root surfaces correlated with their in vitro electrotactic behavior. Manipulation of the root electrical field was reflected in changes in the pattern of zoospore accumulation and imposed focal electrical fields were capable of overriding endogenous signals at the root surface. The overall pattern of zoospore accumulation around roots was not affected by the presence of amino acids at concentrations expected within the rhizosphere, although higher concentrations induced encystment and reduced root targeting. The data suggest that electrical signals can augment or override chemical ones in mediating short-range tactic responses of oomycete zoospores at root surfaces. |
| first_indexed | 2024-12-19T23:58:25Z |
| format | Article |
| id | doaj.art-ce2957e92d7d498799f7d8d4326debdb |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-12-19T23:58:25Z |
| publishDate | 2002-08-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-ce2957e92d7d498799f7d8d4326debdb2022-12-21T20:00:56ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062002-08-0115879079810.1094/MPMI.2002.15.8.790Oomycete Plant Pathogens Use Electric Fields to Target RootsP. van WestB. M. MorrisB. ReidA. A. AppiahM. C. OsborneT. A. CampbellS. J. ShepherdN. A. R. GowPlant roots generate electrical currents and associated electrical fields as a consequence of electrogenic ion transport at the root surface. Here we demonstrate that the attraction of swimming zoospores of oomycete plant pathogens to plant roots is mediated in part by electrotaxis in natural root-generated electric fields. The zones of accumulation of anode- or cathode-seeking zoospores adjacent to intact and wounded root surfaces correlated with their in vitro electrotactic behavior. Manipulation of the root electrical field was reflected in changes in the pattern of zoospore accumulation and imposed focal electrical fields were capable of overriding endogenous signals at the root surface. The overall pattern of zoospore accumulation around roots was not affected by the presence of amino acids at concentrations expected within the rhizosphere, although higher concentrations induced encystment and reduced root targeting. The data suggest that electrical signals can augment or override chemical ones in mediating short-range tactic responses of oomycete zoospores at root surfaces.https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.8.790chemotaxisPhytophthoraPythium |
| spellingShingle | P. van West B. M. Morris B. Reid A. A. Appiah M. C. Osborne T. A. Campbell S. J. Shepherd N. A. R. Gow Oomycete Plant Pathogens Use Electric Fields to Target Roots Molecular Plant-Microbe Interactions chemotaxis Phytophthora Pythium |
| title | Oomycete Plant Pathogens Use Electric Fields to Target Roots |
| title_full | Oomycete Plant Pathogens Use Electric Fields to Target Roots |
| title_fullStr | Oomycete Plant Pathogens Use Electric Fields to Target Roots |
| title_full_unstemmed | Oomycete Plant Pathogens Use Electric Fields to Target Roots |
| title_short | Oomycete Plant Pathogens Use Electric Fields to Target Roots |
| title_sort | oomycete plant pathogens use electric fields to target roots |
| topic | chemotaxis Phytophthora Pythium |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2002.15.8.790 |
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