Role of Pseudomonas aurantiaca in Crop Improvement

Andrés, Javier; Rovera, Marisa; Guiñazú, Lorena B.; Pastor, Nicolás; Rosas, Susana B.

doi:10.1007/978-3-642-20332-9_5

Cited by 4 publications

(6 citation statements)

References 63 publications

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“…aurantiaca with ~5.8 mg/l IAA. IAA production was reported earlier for two strains of P. aurantiaca [12,32]. It might be produced by other strains as well but researchers working with P. aurantiaca and P. chlororaphis are more focused on its use as a biocontrol agent than growth promoter, therefore ignoring or not assessing their ability for IAA production.…”

Section: Discussionmentioning

confidence: 99%

“…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%

“…Based on these abilities, most of their strains are used as biocontrol agents. P. aurantiaca strains SR1, BL915, and S1 are HCN and siderophore producers [12,32,41]. PB-St2 was reported to show HCN and siderophore production and antifungal activity against more than 40 fungal pathogens [16][17][18].…”

Section: Discussionmentioning

confidence: 99%

“…They have also studied the effect of this strain on maize, soybean, and alfalfa, and reported growth enhancement in these crops. Among P. aurantiaca strains, SR1 had been extensively studied for plant growth promotion with different crops at the field level [32,[45][46][47]. There are several reports about the use of P. putida and P. fluorescens as inoculum for plant growth, but reports about P. aurantiaca and P. chlororaphis are rare.…”

Section: Discussionmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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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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“…We also included in the study strain DSM 19603 T , which belongs to the taxon Pseudomonas chlororaphis subsp. aurantiaca, a subspecies known to display PGP properties (Andrés et al 2011) and for this reason often included in industrial bio-fertilizer products.…”

Section: Phenotypic Characterization Of Strain Mimr1mentioning

confidence: 99%

Luteibacter rhizovicinus MIMR1 promotes root development in barley (Hordeum vulgare L.) under laboratory conditions

Guglielmetti

Basilico

Taverniti

et al. 2013

World J Microbiol Biotechnol

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In order to preserve environmental quality, alternative strategies to chemical-intensive agriculture are strongly needed. In this study, we characterized in vitro the potential plant growth promoting (PGP) properties of a gamma-proteobacterium, named MIMR1, originally isolated from apple shoots in micropropagation. The analysis of the 16S rRNA gene sequence allowed the taxonomic identification of MIMR1 as Luteibacter rhizovicinus. The PGP properties of MIMR1 were compared to Pseudomonas chlororaphis subsp. aurantiaca DSM 19603(T), which was selected as a reference PGP bacterium. By means of in vitro experiments, we showed that L. rhizovicinus MIMR1 and P. chlororaphis DSM 19603(T) have the ability to produce molecules able to chelate ferric ions and solubilize monocalcium phosphate. On the contrary, both strains were apparently unable to solubilize tricalcium phosphate. Furthermore, the ability to produce 3-indol acetic acid by MIMR1 was approximately three times higher than that of DSM 19603(T). By using fluorescent recombinants of strains MIMR1 and DSM 19603(T), we also demonstrated that both bacteria are able to abundantly proliferate and colonize the barley rhizosphere, preferentially localizing on root tips and in the rhizoplane. Finally, we observed a negative effect of DSM 19603(T) on barley seed germination and plant growth, whereas MIMR1, compared to the control, determined a significant increase of the weight of aerial part (+22 %), and the weight and length of roots (+53 and +32 %, respectively). The results obtained in this work make L. rhizovicinus MIMR1 a good candidate for possible use in the formulation of bio-fertilizers.

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Secondary Metabolites of Pseudomonas aurantiaca and Their Role in Plant Growth Promotion

Mehnaz

2013

Plant Microbe Symbiosis: Fundamentals and Advances

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Role of Pseudomonas aurantiaca in Crop Improvement

Cited by 4 publications

References 63 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

Luteibacter rhizovicinus MIMR1 promotes root development in barley (Hordeum vulgare L.) under laboratory conditions

Secondary Metabolites of Pseudomonas aurantiaca and Their Role in Plant Growth Promotion

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