Plant growth promoting properties of a strain of Enterobacter ludwigii isolated from Lolium perenne rhizosphere

Shoebitz, Mauricio; Ribaudo, Cristina; Pardo, Martín A.; Cantore, María L.; Ciampi, Luigi; Curá, José A.

doi:10.1016/j.soilbio.2007.12.031

Cited by 166 publications

(89 citation statements)

References 30 publications

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“…These strains were identifi ed as promising PSB that occur in the tobacco rhizosphere. Previous reports have shown that each of these species associates with plant rhizospheres, and they have been studied as promising PSB [33][34][35]. Similar to previous reports [12,13,33], siderophore production and IAA secretion abilities were observed for many PSB isolates in our work.…”

Section: Discussionsupporting

confidence: 90%

Isolation, Characterization, and Growth Promotion of Phosphate-Solubilizing Bacteria Associated with Nicotiana Tabacum (Tobacco)

Gao¹,

Kong²,

Feng³

et al. 2016

Pol. J. Environ. Stud.

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Phosphate-solubilizing bacteria (PSB) increase phosphate bioavailability, thereby reducing the application frequency of chemical fertilizers in the production of Nicotiana tabacum (tobacco). In this study, PSB were isolated from tobacco plants for the fi rst time. These PSB were screened in vitro for their ability to solubilize inorganic P (Pi) when grown in association with tobacco plants. Thirty-six PSB with the ability to solubilize P i were isolated and screened for their indolyl-3-acetic acid and siderophore-producing capabilities. In addition, all 36 PSB strains had a partial fragment of their 16S rRNA gene sequenced. The analysis revealed high sequence identity to 16S rDNA sequences from Bacillus, Arthrobacter, Providencia, Enterobacter, Proteus, Psychrobacter, Serratia, Rhodococcus, Pseudomonas, Ochrobactrum, and Acinetobacter. Of the 36 PSB strains analyzed, three (Psychrobacter alimentarius HB15, Enterobacter ludwigii HB21, and Ochrobactrum haematophilum HB36) were selected for a controlled plant inoculation experiment. Inoculation of tobacco plants with these bacterial strains signifi cantly increased plant dry weight. Additionally, inoculation increased P, K, and N uptake by tobacco seedlings as well as soil P availability. The increases observed with inoculation were even more pronounced when tricalcium phosphate (TCP) was added to the soil. The phosphate-solubilizing activity of these three strains was correlated with the release of gluconic, tartaric, acetic, and citric organic acids. Overall, co-inoculation of PSB and TCP appears to represent a promising option for increasing the yield of tobacco plants. The adoption of this technique could provide a pathway to reducing fertilizer input in agricultural settings.

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Section: Discussionsupporting

confidence: 90%

Isolation, Characterization, and Growth Promotion of Phosphate-Solubilizing Bacteria Associated with Nicotiana Tabacum (Tobacco)

Gao¹,

Kong²,

Feng³

et al. 2016

Pol. J. Environ. Stud.

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“…Plant growth promotion by rhizobacterias is well documented under laboratory conditions (Nico et al, 2012;Schoebitz et al, 2009a). Nevertheless, only some works about this subject of encapsulated rhizobacterias inoculation on plants are available (Rekha et al, 2007;Vassilev et al, 2001).…”

Section: The Results Of Solubilization Index Of P Fluorescensmentioning

confidence: 99%

Effect of immobilized phosphate solubilizing bacteria on wheat growth and phosphate uptake

Schoebitz

Ceballos

Ciamp

2013

J. Soil Sci. Plant Nutr.

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A study was performed to investigate the efficiency of rhizobacteria on solubilization of rock phosphate and their assimilation by wheat plants in quartz sand potted experiments. Two phosphate solubilizing bacteria, P. fluorescens and Serratia sp. were encapsulated in sodium alginate and potato starch beads and selected to investigate the variation on pH values, the enzymatic activity of alkaline and acid phosphatase and phosphate solubilization in Pikovskaya liquid medium. A relation between pH diminution and P solubilization was found. P solubilization of 89 and 93 μg mL -1 was observed with immobilized phosphate solubilizing bacteria, which was significantly higher compared to autoclaved alginate-starch beads. Higher values around 64% in P uptake by wheat plants after 60 days of growth was observed with immobilized P. fluorescens+3.25 ppm of P. The results demonstrated that inoculation of the immobilized rhizobacteria is a promising option for inoculant carriers to increase P level in plants wheat and could be an innovative technique for application in agricultural industry.

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“…This is supported by the fact that E. ludwigii has not been isolated only from clinical samples but also from plants, where these strains have shown plant growth promotion (Shoebitz et al, 2009). In this study we taxonomically characterized selected Enterobacteriaceae strains, which were isolated previously from Italian ryegrass and birdsfoot trefoil grown in a diesel-contaminated soil.…”

Section: Discussionmentioning

confidence: 99%

“…E. ludwigii belongs to the E. cloacae complex, which has been frequently isolated from nosocomial infections; however, it is not clear whether E. ludwigii is a true pathogen or has a rather commensal character (Paauw et al, 2008). Generally, few studies on E. ludwigii are available, but it has been reported as a plant-associated bacterium with plant growth-promoting and biocontrol capacities (Shoebitz et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon degradation, plant colonization and gene expression of alkane degradation genes by endophytic Enterobacter ludwigii strains

Yousaf

Afzal

Reichenauer

et al. 2011

Environmental Pollution

169

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The genus Enterobacter comprises a range of beneficial plant-associated bacteria showing plant growth-promotion. Enterobacter ludwigii belongs to the Enterobacter cloacae complex and has been reported to include human pathogens but also plantassociated strains with plant beneficial capacities. To assess the role of Enterobacter endophytes in hydrocarbon degradation, plant colonization, abundance and expression of CYP153 genes in different plant compartments, three plant species (Italian ryegrass, birdsfoot trefoil and alfalfa) were grown in sterile soil spiked with 1% diesel and inoculated with three endophytic Enterobacter ludwigii strains. Results showed that all strains were capable of hydrocarbon degradation and efficiently colonized the rhizosphere and plant interior. Two strains, ISI10-3 and BRI10-9, showed highest degradation rates of diesel fuel up to 68% and performed best in combination with Italian ryegrass and alfalfa. All strains expressed the CYP153 gene in all plant compartments, indicating an active role in degradation of diesel in association with plants. Capsule:Enterobacter ludwigii strains belonging to the E. cloacae complex are able to efficiently degrade alkanes when associated with plants and to promote plant growth.

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Plant growth promoting properties of a strain of Enterobacter ludwigii isolated from Lolium perenne rhizosphere

Cited by 166 publications

References 30 publications

Isolation, Characterization, and Growth Promotion of Phosphate-Solubilizing Bacteria Associated with Nicotiana Tabacum (Tobacco)

Isolation, Characterization, and Growth Promotion of Phosphate-Solubilizing Bacteria Associated with Nicotiana Tabacum (Tobacco)

Effect of immobilized phosphate solubilizing bacteria on wheat growth and phosphate uptake

Hydrocarbon degradation, plant colonization and gene expression of alkane degradation genes by endophytic Enterobacter ludwigii strains

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