دورية أكاديمية
A Novel Plant Ferredoxin-Like Protein and the Regulator Hor Are Quorum-Sensing Targets in the Plant Pathogen Erwinia carotovora
| العنوان: | A Novel Plant Ferredoxin-Like Protein and the Regulator Hor Are Quorum-Sensing Targets in the Plant Pathogen Erwinia carotovora |
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| المؤلفون: | Solveig Sjöblom, Heidi Harjunpää, Günter Brader, E. Tapio Palva |
| المصدر: | Molecular Plant-Microbe Interactions, Vol 21, Iss 7, Pp 967-978 (2008) |
| بيانات النشر: | The American Phytopathological Society, 2008. |
| سنة النشر: | 2008 |
| المجموعة: | LCC:Microbiology LCC:Botany |
| مصطلحات موضوعية: | acylhomoserine lactone, AHSL, ExpI, Pectobacterium carotovorum, Microbiology, QR1-502, Botany, QK1-989 |
| الوصف: | Quorum sensing (QS), a population-density-sensing mechanism, controls the production of the main virulence determinants, the plant cell-wall-degrading enzymes (PCWDEs) of the soft-rot phytopathogen Erwinia carotovora subsp. carotovora. In this study, we used random transposon mutagenesis with a gusA reporter construct to identify two new QS-controlled genes encoding the regulator Hor and a plant ferredoxin-like protein, FerE. The QS control of the identified genes was executed by the QS regulators ExpR1 and ExpR2 and mediated by the global repressor RsmA. Hor was shown to contribute to bacterial virulence at least partly through its control of PCWDE production. Our results showed that FerE contributes to oxidative stress tolerance and in planta fitness of the bacteria and suggest that QS could be central to control of oxidative stress tolerance. The presence of the FerE protein appears to be rather unique in heterotrophic bacteria and suggests an acquisition of the corresponding gene from plant host by horizontal gene transfer. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1943-7706 0894-0282 |
| Relation: | https://doaj.org/toc/0894-0282; https://doaj.org/toc/1943-7706 |
| DOI: | 10.1094/MPMI-21-7-0967 |
| URL الوصول: | https://doaj.org/article/5f6a94f96ac24a539618559e0a5c8f2b |
| رقم الأكسشن: | edsdoj.5f6a94f96ac24a539618559e0a5c8f2b |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 19437706 08940282 |
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| DOI: | 10.1094/MPMI-21-7-0967 |