Reclassification of Pseudomonas aurantiaca as a synonym of Pseudomonas chlororaphis and proposal of three subspecies, P. chlororaphis subsp. chlororaphis subsp. nov., P. chlororaphis subsp. aureofaciens subsp. nov., comb. nov. and P. chlororaphis subsp. aurantiaca subsp. nov., comb. nov.

Peix, Álvaro; Valverde, Ángel; Rivas, Raúl; Igual, José M.; Ramírez-Bahena, Martha-Helena; Mateos, Pedro F.; Santa‐Regina, Ignacio; Rodríguez-Barrueco, C.; Martínez‐Molina, Eustoquio; Velázquez, Encarna

doi:10.1099/ijs.0.64621-0

Cited by 97 publications

(60 citation statements)

References 13 publications

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“…could not be found, although Peix et al [20] used the production of phenazine-1-carboxylate as a characteristic feature of P. aureofaciens and P. aurantiaca when they reclassified these two bacteria as subspecies of P. chlororaphis. Similarly, 2-OH-PHZ and HCN production by P. aurantiaca have not been reported.…”

Section: Discussionmentioning

confidence: 99%

Characterization of a Phenazine and Hexanoyl Homoserine Lactone Producing Pseudomonas aurantiaca Strain PB-St2, Isolated from Sugarcane Stem

Mehnaz

Baig²,

Jamil³

et al. 2009

J. Microbiol. Biotechnol.

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A novel strain of fluorescent pseudomonad (PB-St2) was isolated from surface-sterilized stems of sugarcane grown in Pakistan. The bacterium was identified as Pseudomonas aurantiaca on the basis of 16S rRNA gene sequence analysis and results from physiological and biochemical characteristics carried out with API50 CH and QTS 24 bacterial identification kits. Assays using substrate-specific media for enzymes revealed lipase and protease activities but cellulase, chitinase, or pectinase were not detected. The bacterium was unable to solubilize phosphate or produce indole acetic acid. However, it did produce HCN, siderophores, and homoserine lactones. In dual culture assays on agar, the bacterium showed antifungal activity against an important pathogen of sugarcane in Pakistan, namely Colletotrichum falcatum, as well as for pathogenic isolates of Fusarium oxysporium and F. lateritium but not against F. solani. The antifungal metabolites were identified using thin-layer chromatography, UV spectra, and MALDI-TOFF spectra and shown to be phenazine-1-carboxylic acid (PCA), 2-hydroxyphenazine(2-OH-PHZ), and Nhexanoyl homoserine lactone (HHL) (assessed using only TLC data). The capacity of this bacterium to produce HCN and 2-OH-PHZ, as well as to inhibit the growth of C. falcatum, has not been previously reported.

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Section: Discussionmentioning

confidence: 99%

Characterization of a Phenazine and Hexanoyl Homoserine Lactone Producing Pseudomonas aurantiaca Strain PB-St2, Isolated from Sugarcane Stem

Mehnaz

Baig²,

Jamil³

et al. 2009

J. Microbiol. Biotechnol.

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“…The species Pseudomonas aurantiaca was recently reclassified as P. chlororaphis subsp. aurantiaca (Peix et al, 2007). Strain SR1 inhibits a wide range of phytopathogenic fungal species including Macrophomina phaseolina, Rhizoctonia spp.…”

Section: Pseudomonas Chlororaphis Subsp Aurantiaca Sr1mentioning

confidence: 99%

Efficacy of Pseudomonas chlororaphis subsp. aurantiaca SR1 for Improving Productivity of Several Crops

Rosas¹,

Pastor²,

Guiñazú³

et al. 2012

Crop Production Technologies

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“…2 (6). StBRB008 and StBRB009 were placed in the "Pseudomonas chlororaphis group" (4,25), and produced C6 and two undefined AHL molecules.…”

Section: Phylogenetic Analysis Of the 16s Rrna Gene From Ahl-producinmentioning

confidence: 99%

Distribution of N-Acylhomoserine Lactone-Producing Fluorescent Pseudomonads in the Phyllosphere and Rhizosphere of Potato (Solanum tuberosum L.)

et al. 2009

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Four hundred and fifty nine isolates of fluorescent pseudomonads were obtained from the leaves and roots of potato plants. Of these, 20 leaf isolates and 28 root isolates induced violacein production in two N-acylhomoserine lactone (AHL)-reporter strains-Chromobacterium violaceum CV026 and VIR24. VIR24 is a new reporter strain for long Nacyl-chain-homoserine lactones, which can not be detected by CV026. Thin-layer chromatography revealed that the isolates produced multiple AHL molecules. We compared the 16S rRNA gene sequences of these isolates with sequences from a known database, and examined phylogenetic relationships. The AHL-producing isolates generally separated into three groups. Group I was mostly composed of leaf isolates, and group III, root isolates. Group II comprised both leaf and root isolates. There was a correlation between the phylogenetic cluster and the AHL molecules produced and some phenotypic characteristics. Our study confirmed that AHL-producing fluorescent pseudomonads could be distinguished in the phyllosphere and rhizosphere of potato plants.

show abstract

Reclassification of Pseudomonas aurantiaca as a synonym of Pseudomonas chlororaphis and proposal of three subspecies, P. chlororaphis subsp. chlororaphis subsp. nov., P. chlororaphis subsp. aureofaciens subsp. nov., comb. nov. and P. chlororaphis subsp. aurantiaca subsp. nov., comb. nov.

Cited by 97 publications

References 13 publications

Characterization of a Phenazine and Hexanoyl Homoserine Lactone Producing Pseudomonas aurantiaca Strain PB-St2, Isolated from Sugarcane Stem

Characterization of a Phenazine and Hexanoyl Homoserine Lactone Producing Pseudomonas aurantiaca Strain PB-St2, Isolated from Sugarcane Stem

Efficacy of Pseudomonas chlororaphis subsp. aurantiaca SR1 for Improving Productivity of Several Crops

Distribution of N-Acylhomoserine Lactone-Producing Fluorescent Pseudomonads in the Phyllosphere and Rhizosphere of Potato (Solanum tuberosum L.)

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