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dc.contributor.author
Alvarez Crespo, María Cecilia
dc.contributor.author
Valverde, Claudio Fabián
dc.date.available
2024-09-11T10:56:44Z
dc.date.issued
2008-11
dc.identifier.citation
Alvarez Crespo, María Cecilia; Valverde, Claudio Fabián; A Single Mutation in the oprF mRNA Leader Confers Strict Translational Control by the Gac/Rsm System in Pseudomonas fluorescens CHA0; Springer; Current Microbiology; 58; 2; 11-2008; 182-188
dc.identifier.issn
0343-8651
dc.identifier.uri
http://hdl.handle.net/11336/244048
dc.description.abstract
The rhizobacterium Pseudomonas fluorescens CHA0 is able to antagonize fungal phytopathogens on a variety of crop plants, mainly due to the production of secondary metabolites that are coordinately upregulated by the global regulatory Gac/Rsm cascade. The two-component system GacS/GacA activates transcription of the three small regulatory RNAs RsmX, RsmY, and RsmZ, which counteract translational repression of target mRNAs by RsmA and RsmE proteins. In a search for novel Gac/Rsm targets based on the minimal sequence on mRNA leaders required for RsmA/RsmE control, the leader region of the major porin OprF emerged as a candidate. Although an isogenic CHA0 oprF mutant showed a reduced ability to attach to cucumber and tomato roots, suggesting a role for OprF in root colonization as a requisite for pathogen antagonism, a translational oprF0-0lacZ fusion was weakly regulated by Gac/Rsm despite its high sequence similarity to the hcnA leader. A single base substitution put the modified oprF 50-UTR under strict control by Gac/Rsm. The results highlight the subtle sequence requirements of Gac/Rsm targets.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PSEUDOMONA
dc.subject
OPRF
dc.subject
GAC/RSM
dc.subject.classification
Biología Celular, Microbiología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A Single Mutation in the oprF mRNA Leader Confers Strict Translational Control by the Gac/Rsm System in Pseudomonas fluorescens CHA0
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-09-10T13:01:27Z
dc.journal.volume
58
dc.journal.number
2
dc.journal.pagination
182-188
dc.journal.pais
Alemania
dc.description.fil
Fil: Alvarez Crespo, María Cecilia. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Valverde, Claudio Fabián. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Current Microbiology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00284-008-9306-6
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