Although not fully understood, molecular communication in the rhizosphere plays an important role regulating traits involved plant-bacteria association. Burkholderia phytofirmans PsJN is a well-known plant-growth-promoting bacterium, which establishes rhizospheric and endophytic colonization different plants. A competent essential for effects produced by bacteria. Using appropriate mutant strains of B. phytofirmans, we obtained evidence importance N-acyl homoserine lactone-mediated (quorum...

Abiotic stress has a growing impact on plant growth and agricultural activity worldwide. Specific promoting rhizobacteria have been reported to stimulate tolerance abiotic in plants, molecular mechanisms like phytohormone synthesis 1-aminocyclopropane-1-carboxylate deamination are usual candidates proposed mediate these bacterial effects. Paraburkholderia phytofirmans PsJN is able promote of several hosts, improve their chilling, drought salinity. This work investigated determinants involved...

ABSTRACT Several bacteria use the plant hormone indole-3-acetic acid (IAA) as a sole carbon and energy source. A cluster of genes (named iac ) encoding IAA degradation has been reported in Pseudomonas putida 1290, but functions these are not completely understood. The plant-growth-promoting rhizobacterium Paraburkholderia phytofirmans PsJN harbors gene homologues its genome, with different organization context than those P. 1290. enable to Employing heterologous expression system approach,...

Paraburkholderia phytofirmans PsJN is a plant growth-promoting rhizobacterium (PGPR) that stimulates growth and improves tolerance to abiotic stresses. This study analyzed whether strain can reduce disease severity proliferation of the virulent Pseudomonas syringae pv. tomato DC3000, in Arabidopsis plants, through activation induced resistance. plants previously exposed showed reduction pathogen leaves compared with noninoculated, infected plants. The defense-related genes WRKY54, PR1, ERF1,...

Cupriavidus pinatubonensis JMP134, like many other environmental bacteria, uses a range of aromatic compounds as carbon sources. Previous reports have shown preference for benzoate when this bacterium grows on binary mixtures composed compound and 4-hydroxybenzoate or phenol. However, observation has not been extended to resembling more archetypal context. We carried out systematic study the substrate C. JMP134 growing representative channeled through different catabolic pathways described...

Quorum-sensing systems play important roles in host colonization and establishment of Burkholderiales species. Beneficial Paraburkholderia species share a conserved quorum-sensing (QS) system, designated BraI/R, that controls different phenotypes. In this context, the plant growth-promoting bacterium phytofirmans PsJN possesses two homoserine lactone QS BpI.1/R.1 BpI.2/R.2 (BraI/R-like system). The system was previously reported to be colonize produce beneficial effects Arabidopsis thaliana...

Summary As other environmental bacteria, Cupriavidus necator JMP134 uses benzoate as preferred substrate in mixtures with 4‐hydroxybenzoate, strongly inhibiting its degradation. The mechanism underlying this hierarchical use was studied. A C. benA mutant, defective the first step of degradation, is unable to metabolize 4‐hydroxybenzoate when also included medium, indicating that and not one catabolic intermediates directly triggering repression. Reverse transcription polymerase chain...

Stutzerimonas balearica (Pseudomonas balearica) has been found principally in oil-polluted environments. The capability of S. to thrive from the degradation pollutant compounds makes it a species interest for potential bioremediation applications. However, little reported about diversity balearica. In this study, genome sequences strains different origins were analyzed, revealing that is diverse with an open pan-genome will continue new genes and functionalities as genomes more are...

Maleylacetate reductases (MAR) are required for biodegradation of several substituted aromatic compounds. To date, the functionality two MAR-encoding genes (tfdF(I) and tfdF(II)) has been reported in Cupriavidus necator JMP134(pJP4), a known degrader These located tfd gene clusters involved turnover 2,4-dichlorophenoxyacetate (2,4-D) 3-chlorobenzoate (3-CB). The C. JMP134 genome comprises at least three other that putatively encode MAR (tcpD, hqoD hxqD), but confirmation their role...

Catechols are central intermediates in the metabolism of aromatic compounds. Degradation 4-methylcatechol via intradiol cleavage usually leads to formation 4-methylmuconolactone (4-ML) as a dead-end metabolite. Only few microorganisms known mineralize 4-ML. The mml gene cluster Pseudomonas reinekei MT1, which encodes enzymes involved 4-ML, is shown here encode 10 genes found 9.4-kb chromosomal region. Reverse transcription assays revealed that these form single operon, where their expression...

Furans represent a class of promising chemicals, since they constitute valuable intermediates in conversion biomass into sustainable products intended to replace petroleum-derivatives. Conversely, generation furfural and 5-hydroxymethylfurfural (HMF) as by-products lignocellulosic hydrolysates is undesirable due its inhibitory effect over fermentative microorganisms. Therefore, the search for furans-metabolizing bacteria has gained increasing attention are tools solve these challenging...

The self-sufficient cytochrome P450 RhF and its homologues belonging to the CYP116B subfamily have attracted considerable attention due potential for biotechnological applications based in their ability catalyse an array of challenging oxidative reactions without requiring additional protein partners. In this work, we showed first time that a encoded by ohpA gene harboured Cupriavidus pinatubonensis JMP134, β-proteobacterium model biodegradative pathways, catalyses conversion...

Rhodococcus ruber R1 was isolated from a pulp mill wastewater treatment plant because of its ability to use methoxylated aromatics as growth substrates. We report the 5.56-Mb genome sequence strain R1, which can provide insights into biodegradation lignin-derived phenolic monomers and potentially support processes for lignocellulose conversion.

We report the complete 8.94-Mb genome sequence of type strain Cupriavidus basilensis (DSM 11853 = CCUG 49340 RK1), formed by two chromosomes and six putative plasmids, which offers insights into its chloroaromatic-biodegrading capabilities.

Abstract A new chaetoglobosin, named chaetoglobosin P (1) has been isolated from a fungus of the genus Discosia and its structure elucidated by spectroscopic analysis in comparison with published data for other chaetoglobosins.

Here, we report the complete genome sequence of Pseudomonas chilensis strain ABC1, which was isolated from a soil interstitial water sample collected at University Adolfo Ibañez, Valparaiso, Chile. We assembled PacBio reads into single closed contig with 209× mean coverage, yielding 4,035,896-bp 62% GC content and 3,555 predicted genes.

Summary Members of the genus Pseudomonas inhabit diverse environments, such as soil, water, plants and humans. The variability habitats is reflected in diversity structure composition their genomes. This cosmopolitan bacterial includes species biotechnological, medical environmental importance. In this study, we report on most relevant genomic characteristics sp. strain ABC1, a siderophore‐producing fluorescent recently isolated from soil. Phylogenomic analyses revealed that corresponds to...

ABSTRACT Skatole is an aromatic heterocyclic compound with a strong offensive odor, produced by microorganisms during the anaerobic breakdown of tryptophan. accumulation linked to environmental and health issues. Despite its persistence harmful effects, skatole’s biodegradation poorly understood. We have recently isolated gram-positive bacterium, Rhodococcus ruber R1, which uses skatole as sole carbon energy source. Here we report operon consisting 14 genes encoding oxygenase systems...

Pseudomonas sp. strains ALS1279 and ALS1131 were isolated from wastewater treatment facilities on the basis of their ability to use furfural, a key lignocellulose-derived inhibitor, as only carbon source. Here, we present draft genome sequences both strains, which can shed light catabolic pathways for furan compounds in pseudomonads.