Evaluation ofPseudomonas chlororaphissubsp.aurantiacaSR1 for growth promotion of soybean and for control ofMacrophomina phaseolina

Rovera, Marisa; Pastor, Nicolás; Niederhauser, Marina; Rosas, Susana B.

doi:10.1080/09583157.2014.910293

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…Hu et al [34] reported the antifungal activity of P. aurantiaca strain Pch010 against F. graminearum and used it as a biocontrol agent for wheat in field experiments. P. aurantiaca SR1 drastically inhibited the growth of Macrophomina phaseolina in vitro and in vivo when the soybean plants were inoculated with it [35]. Data obtained in the current study also support the production of these compounds by P. aurantiaca and P. chlororaphis strains.…”

Section: Discussionsupporting

confidence: 82%

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Secondary Metabolites Production and Plant Growth Promotion by Pseudomonas chlororaphis and P. aurantiaca Strains Isolated from Cactus, Cotton, and Para Grass

Shahid

Rizwan

Baig

et al. 2017

Journal of Microbiology and Biotechnology

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Fluorescent pseudomonads have been isolated from halophytes, mesophytes, and xerophytes of Pakistan. Among these, eight isolates, GS-1, GS-3, GS-4, GS-6, GS-7, FS-2 (cactus), ARS-38 (cotton), and RP-4 (para grass), showed antifungal activity and were selected for detailed study. Based on biochemical tests and 16S rRNA gene sequences, these were identified as strains of subsp. and . Secondary metabolites of these strains were analyzed by LC-MS. Phenazine-1-carboxylic acid (PCA), 2-hydroxy-phenazine, Cyclic Lipopeptide (white line-inducing principle (WLIP)), and lahorenoic acid A were detected in variable amounts in these strains. PB-St2 was used as a reference as it is known for the production of these compounds. The and genes were amplified to assure that production of these compounds is not an artifact. Indole acetic acid production was confirmed and quantified by HPLC. HCN and siderophore production by all strains was observed by plate assays. These strains did not solubilize phosphate, but five strains were positive for zinc solubilization. Wheat seedlings were inoculated with these strains to observe their effect on plant growth. strains PB-St2 and GS-6 and RP-4 significantly increased both root and shoot dry weights, as compared with uninoculated plants. However, strains FS-2 and ARS-38 significantly increased root and shoot dry weights, respectively. All strains except PB-St2 and ARS-38 significantly increased the root length. This is the first report of the isolation of from cotton and cactus, from para grass, WLIP and lahorenoic acid A production by, and zinc solubilization by and.

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Section: Discussionsupporting

confidence: 82%

“…chlororaphis subsp. chlororaphis and aurantiaca strains are reported to produce other phenazines, pyrrolnitrin, phenazine 1-carboxamide, and 2,4-DAPG commonly among identified compounds [18,[32][33][34][35]. We followed the protocols for the isolation of these compounds but they were not detected in these isolates.…”

Section: Discussionmentioning

confidence: 99%

Secondary Metabolites Production and Plant Growth Promotion by Pseudomonas chlororaphis and P. aurantiaca Strains Isolated from Cactus, Cotton, and Para Grass

Shahid

Rizwan

Baig

et al. 2017

Journal of Microbiology and Biotechnology

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“…Antibiotics produced by beneficial microorganisms have direct contact killing effect on pathogenic bacteria [39,40]. Therefore, antibiotics are not only one of the most studied mechanisms of biological control, but also a character to be considered when screening potential biocontrol agents (BCAs) [41,42].…”

Section: Discussionmentioning

confidence: 99%

Forest Tree Associated Bacterial Diffusible and Volatile Organic Compounds against Various Phytopathogenic Fungi

Kong

et al. 2020

Microorganisms

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Plant growth-promoting rhizobacteria (PGPR) can potentially be used as an alternative strategy to control plant diseases. In this study, strain ST–TJ4 isolated from the rhizosphere soil of a healthy poplar was found to have a strong antifungal activity against 11 phytopathogenic fungi in agriculture and forestry. Strain ST–TJ4 was identified as Pseudomonas sp. based on 16S rRNA-encoding gene sequences. The bacterium can produce siderophores, cellulase, and protease, and has genes involved in the synthesis of phenazine, 1–phenazinecarboxylic acid, pyrrolnitrin, and hydrogen cyanide. Additionally, the volatile compounds released by strain ST–TJ4 can inhibit the mycelial growth of plant pathogenic fungi more than diffusible substances can. Based on volatile compound profiles of strain ST–TJ4 obtained from headspace collection and GC–MS/MS analysis, 1-undecene was identified. In summary, the results suggested that Pseudomonas sp. ST–TJ4 can be used as a biocontrol agent for various plant diseases caused by phytopathogenic fungi.

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“…Antibiotics are toxins produced by microbes that can kill other microorganisms (Rovera et al, 2014;Chen et al, 2018). Antibiosis is one of the most studied mechanisms of biological control and a selection trait to consider when screening potential biological control agents (BCAs) (Raio et al, 2011;Filion et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Diffusible and Volatile Antifungal Compounds Produced by Pseudomonas chlororaphis subsp. aurantiaca ST-TJ4 against Various Phytopathogenic Fungi

Kong¹,

Li²,

Xiao-qin³

et al. 2020

Preprint

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Plant growth-promoting rhizobacteria can potentially be used as an alternative strategy to control plant disease. In this study, strain ST-TJ4 isolated from the rhizosphere soil of a healthy poplar was found to have strong antifungal activity against 11 phytopathogenic fungi in agriculture and forestry. Strain ST-TJ4 was identified as Pseudomonas chlororaphis subsp. aurantiaca based on 16S rDNA sequences. The bacterium can produce siderophores, cellulase, and protease, and has genes involved in the synthesis of phenazine, 1-phenazinecarboxylic acid, pyrrolnitrin, and hydrogen cyanide. Moreover, the volatile compounds released by strain ST-TJ4 can inhibit the mycelial growth of plant pathogenic fungi more than diffusible substances can. Based on volatile compound profiles of strain ST-TJ4 obtained from headspace collection and GC-MS/MS analysis, 1-undecene was identified. In summary, the results suggested that P. chlororaphis subsp. aurantiaca ST-TJ4 can be used as a biocontrol agent for various plant diseases caused by phytopathogenic fungi.

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Evaluation ofPseudomonas chlororaphissubsp.aurantiacaSR1 for growth promotion of soybean and for control ofMacrophomina phaseolina

Cited by 10 publications

References 31 publications

Secondary Metabolites Production and Plant Growth Promotion by Pseudomonas chlororaphis and P. aurantiaca Strains Isolated from Cactus, Cotton, and Para Grass

Secondary Metabolites Production and Plant Growth Promotion by Pseudomonas chlororaphis and P. aurantiaca Strains Isolated from Cactus, Cotton, and Para Grass

Forest Tree Associated Bacterial Diffusible and Volatile Organic Compounds against Various Phytopathogenic Fungi

Diffusible and Volatile Antifungal Compounds Produced by Pseudomonas chlororaphis subsp. aurantiaca ST-TJ4 against Various Phytopathogenic Fungi

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