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Novel bacteria degrading N-acylhomoserine lactones and their use as quenchers of quorum-sensing-regulated functions of plant-pathogenic bacteria.
The diversity of the QS-interfering bacteria in the rhizosphere is revealed and the validity of targeting QS signal molecules to control pathogens with natural bacterial isolates is demonstrated.
The cell density‐dependent expression of stewartan exopolysaccharide in Pantoea stewartii ssp. stewartii is a function of EsaR‐mediated repression of the rcsA gene
- T. Minogue, A. Carlier, Maria D Koutsoudis, S. V. von Bodman
- BiologyMolecular microbiology
- 1 April 2005
The focus of this study was to define the mechanism by which EsaR governs the expression of the cps locus, which encodes functions required for stewartan EPS synthesis and membrane translocation, and to describe that RcsA positively controls its own expression.
The Ti Plasmid of Agrobacterium tumefaciens Harbors an attM-Paralogous Gene, aiiB, Also Encoding N-Acyl Homoserine Lactonase Activity
- A. Carlier, S. Uroz, D. Faure
- Biology, EngineeringApplied and Environmental Microbiology
- 1 August 2003
The Agrobacterium tumefaciens C58 genome contains three putative N-acyl homoserine lactone (acyl-HSL) hydrolases, which are closely related to the lactonase AiiA of Bacillus, which conferred the ability to degrade acyl- HSLs on the host.
The assimilation of gamma-butyrolactone in Agrobacterium tumefaciens C58 interferes with the accumulation of the N-acyl-homoserine lactone signal.
- A. Carlier, Romain Chevrot, Y. Dessaux, D. Faure
- BiologyMolecular plant-microbe interactions : MPMI
- 1 September 2004
The attKLM operon of A. tumefaciens C58 was shown to be involved in an assimilative pathway of gamma-butyrolactone (GBL), gamma-hydroxybutyrate (GHB), and succinate semialdehyde (SSA), in which AttM and AttL are key enzymes for GBL and GHB assimilation.
Exposing the third chromosome of Burkholderia cepacia complex strains as a virulence plasmid
It is shown that c3 is not an essential chromosomal element, rather a large plasmid that encodes virulence, secondary metabolism and other accessory functions in Bcc bacteria.
The eroded genome of a Psychotria leaf symbiont: hypotheses about lifestyle and interactions with its plant host.
The genome of the symbiont of Psychotria kirkii is sequenced for the first time and suggests that leaf nodule symbiosis benefits the host by providing protection against herbivores or pathogens.
Draft genome and description of Orrella dioscoreae gen. nov. sp. nov., a new species of Alcaligenaceae isolated from leaf acumens of Dioscorea sansibarensis.
Molecular mechanisms underlying the close association between soil Burkholderia and fungi
It is suggested that beneficial interactions with fungi might contribute to the survival strategy of Burkholderia species in environments with sub-optimal conditions, including acidic soils.
Evidence of horizontal gene transfer between obligate leaf nodule symbionts
Evidence that substantial gene flow can occur at the early stages following host restriction in leaf nodule symbioses is found and it is proposed that host-switching events and plasmid conjugative transfers could have promoted these HGTs.