Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa
A mutation in the ilvC gene of Sinorhizobium meliloti 1021 determines a symbiotically defective phenotype. ilvC mutants obtained from different S. meliloti wild-type strains are able to induce root hair deformation on alfalfa roots and show variable activation of the common nodulation genes nodABC....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The American Phytopathological Society
2001-01-01
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| Series: | Molecular Plant-Microbe Interactions |
| Subjects: | |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2001.14.1.55 |
| _version_ | 1818757466958069760 |
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| author | Juan Carlos López Daniel H. Grasso Florian Frugier Martín D. Crespi O. Mario Aguilar |
| author_facet | Juan Carlos López Daniel H. Grasso Florian Frugier Martín D. Crespi O. Mario Aguilar |
| author_sort | Juan Carlos López |
| collection | DOAJ |
| description | A mutation in the ilvC gene of Sinorhizobium meliloti 1021 determines a symbiotically defective phenotype. ilvC mutants obtained from different S. meliloti wild-type strains are able to induce root hair deformation on alfalfa roots and show variable activation of the common nodulation genes nodABC. All of these mutants are noninfective. The presence of extra copies of nodD3-syrM in an IlvC¯ background does not promote nod expression but allows the detection of low levels of Nod factor production. The sulphation of the Nod factor metabolites, however, is not affected. Furthermore, IlvC¯ strains induce a specific pattern of starch accumulation on alfalfa roots as well as of early nodulin expression. Hence, the pleiotropic action of the ilvC gene in S. meliloti may reveal novel complexities involved in the symbiotic interaction. |
| first_indexed | 2024-12-18T06:11:23Z |
| format | Article |
| id | doaj.art-1adb6d4326e74474bae17bee6f3a0835 |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-12-18T06:11:23Z |
| publishDate | 2001-01-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-1adb6d4326e74474bae17bee6f3a08352022-12-21T21:18:24ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062001-01-01141556210.1094/MPMI.2001.14.1.55Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in AlfalfaJuan Carlos LópezDaniel H. GrassoFlorian FrugierMartín D. CrespiO. Mario AguilarA mutation in the ilvC gene of Sinorhizobium meliloti 1021 determines a symbiotically defective phenotype. ilvC mutants obtained from different S. meliloti wild-type strains are able to induce root hair deformation on alfalfa roots and show variable activation of the common nodulation genes nodABC. All of these mutants are noninfective. The presence of extra copies of nodD3-syrM in an IlvC¯ background does not promote nod expression but allows the detection of low levels of Nod factor production. The sulphation of the Nod factor metabolites, however, is not affected. Furthermore, IlvC¯ strains induce a specific pattern of starch accumulation on alfalfa roots as well as of early nodulin expression. Hence, the pleiotropic action of the ilvC gene in S. meliloti may reveal novel complexities involved in the symbiotic interaction.https://apsjournals.apsnet.org/doi/10.1094/MPMI.2001.14.1.55isomeroreductaseplant responsesymbiosis |
| spellingShingle | Juan Carlos López Daniel H. Grasso Florian Frugier Martín D. Crespi O. Mario Aguilar Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa Molecular Plant-Microbe Interactions isomeroreductase plant response symbiosis |
| title | Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa |
| title_full | Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa |
| title_fullStr | Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa |
| title_full_unstemmed | Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa |
| title_short | Early Symbiotic Responses Induced by Sinorhizobium meliloti ilvC Mutants in Alfalfa |
| title_sort | early symbiotic responses induced by sinorhizobium meliloti ilvc mutants in alfalfa |
| topic | isomeroreductase plant response symbiosis |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI.2001.14.1.55 |
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