Effect of Pseudomonas luteola on mobilization of phosphorus and growth of young apple trees (Ligol)—Pot experiment

Kurek, Ewa; Ozimek, Ewa; Sobiczewski, P.; Słomka, Anna; Jaroszuk-Ściseł, Jolanta

doi:10.1016/j.scienta.2013.09.012

Cited by 18 publications

(11 citation statements)

References 53 publications

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“…The concentration of IAA produced by microorganisms seems to be related with plant-type rhizosphere, reaching values from 35.31 to 43.08 µg mL −1 IAA for corn and rice rizospheric phosphobacteria, respectively [ 54 ], and with microorganism types, not exceeding 21 µg mL −1 IAA, even after 500 µg mL −1 Trp supplementation ( Figure 6 ). Our data were in accordance with other studies on Pseudomonas strains or isolates, which after 500 µg Trp mL −1 application synthetized from 18.07 to 22.02 µg IAA mL −1 [ 53 , 55 ].…”

Section: Discussionsupporting

confidence: 92%

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Physiological Diversity of Spitsbergen Soil Microbial Communities Suggests Their Potential as Plant Growth-Promoting Bacteria

Hanaka

Ozimek

Majewska

et al. 2019

IJMS

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The objective of the study was to assess the physiological diversity and metabolic activity of the soil bacterial communities inhabiting Spitsbergen soils in search of bacterial abilities facilitating plant growth promotion. In the soil, the total number of culturable microorganisms, the number of their individual physiological groups (including Siderophore Synthesizing; SSB and Phosphate Solubilizing Bacteria; PSB), the dehydrogenase (DH) activity, and the ability to utilize sources of C, N, P (EcoPlate) were analysed. In bacterial isolates, siderophores production, ACC (1-aminocyclopropane-1-carboxylate) deaminase (ACCD) activity, IAA (indole-3-acetic acid) synthesis were examined. The isolates were applied to the seeds of Phaseolus coccineus regarding their germination and root length. The results showed differences between copio- and oligotrophic bacteria. A usually high number of SSB was accompanied by the raised number of PSB. A bigger number of SSB was connected with low values of Fe in the soil. High DH activity was assisted by greater number of copio- and oligotrophic bacteria, raised average well color development value, and N and C contents in the soil. Germination index was more alike relative seed germination than relative root growth. IAA concentration and ACCD activity were conversely related. Synthesis of siderophores was matched with ACCD activity and its high level was combined with elevated germination index. In spite of different localization of soil samples, some isolates proved similar traits of activity. Distinct affiliation of isolates and their various localizations were displayed. Among all isolates tested, some possessed one main trait of activity, but most of them had two or more significant features for potential plant growth stimulation. These isolates could be an important source of useful bacteria.

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Section: Discussionsupporting

confidence: 92%

“…In our research, GI was a more accountable factor in comparing the results of germination instead of RSG or RRG alone, similar to the results of Pampuro et al [61]. In our research Pseudomonas genus also seems to be promising for future experiments because of its plant growth promoting potential, as was demonstrated by others [3,55].…”

Section: Discussionsupporting

confidence: 89%

Physiological Diversity of Spitsbergen Soil Microbial Communities Suggests Their Potential as Plant Growth-Promoting Bacteria

Hanaka

Ozimek

Majewska

et al. 2019

IJMS

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“…Siderophores are widely studied as one biocontrol mechanism against plant pathogenic microbes, but they also may support iron nutrition of plants. Siderophores can stimulate plant growth indirectly by the inhibition of phytopathogenic microorganisms competing for the growth-limiting, mostly insoluble ferric iron resource in soils [15,29,50].…”

Section: Discussionmentioning

confidence: 99%

Heavy metal tolerant Pseudomonas protegens isolates from agricultural well water in northeastern Algeria with plant growth promoting, insecticidal and antifungal activities

Bensidhoum

Nabti

Tabli

et al. 2016

European Journal of Soil Biology

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The application of plant growth-promoting bacteria (PGPB) with biocontrol activities as inoculants of crops plants against phytopathogenic fungi and insect pests provides a biological alternative to the use of agrochemicals. Two Pseudomonas sp. strains were isolated from agricultural well water in the area of Bejaia, northeastern Algeria, located rather closely to a lead mine deposit. The isolates S4LiBe and S5LiBe had 16S rRNA gene sequence similarities of 99.4% to 99.7% with Pseudomonas protegens CHAO T and other P. protegens strains. The phenotypic profiles tested with BIOLOG-GN2-microplates were very similar, but showed also some remarkable differences. The isolates S4LiBe and S5LiBe showed plant growthpromoting potential based on the production of the phytohormone indole acetic acid and siderophores and the solubilization of insoluble phosphate. In addition, they produced chitinase and other polymer degrading enzymes. Interestingly, while S4LiBe and S5LiBe were resistant against heavy metals (2.0 mM K2Cr2O7 and 3.0 mM CoSO4, HgSO4, CdSO4 8H2O and PbCl2), the reference strain P. protegens CHAO T was very sensitive to Hg 2+ and Cd 2+ and had lower tolerance towards Co 2+ and Pb 2+ . The isolates S4LiBe and S5LiBe were very active in mycelial growth inhibition assays against Botrytis cinerea, Verticillium dahlia, Fusarium graminearum, Aspergillus niger and A. flavus (growth inhibition between 88% and 48%). Furthermore, S4LiBe and S5LiBe showed effective insecticidal activities, when tested in the Galleria injection assay and they were tested positive for the insect toxin gene fitD alike the reference strain CHA0 T . Finally, inoculation of barley seeds with S5LiBe resulted in significantly stimulated germination rate and growth of seedlings, with increased shoot length, shoot and root fresh weight, shoot and root dry weight as compared to non-inoculated plants.Thus, the heavy metal tolerant isolates S4LiBe and S5LiBe harbor a diverse potential as beneficial bacteria for agricultural application. They may be very useful even in polluted soils for the stimulation of e.g. biomass crops. The demonstration of successful isolation from agricultural well water may open more ready access for a wide variety of this kind of beneficial bacteria for agricultural application.

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“…Inoculation of peanut ( Arachis hypogaea L.) with the P-solubilizing nodule endophyte Pantoea J49 increased the aerial dry weight in greenhouse experiments [ 130 ]. Pseudomonas letiola mobilized insoluble P and increased the shoot length and growth of the apple tree variety Ligol [ 131 ]. Moreover, inoculation of Rhodococcus sp.…”

Section: Applications Of Bacterial Endophytesmentioning

confidence: 99%

Harnessing Bacterial Endophytes for Promotion of Plant Growth and Biotechnological Applications: An Overview

Eid

Fouda

Abdel-Rahman

et al. 2021

Plants

125

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Endophytic bacteria colonize plants and live inside them for part of or throughout their life without causing any harm or disease to their hosts. The symbiotic relationship improves the physiology, fitness, and metabolite profile of the plants, while the plants provide food and shelter for the bacteria. The bacteria-induced alterations of the plants offer many possibilities for biotechnological, medicinal, and agricultural applications. The endophytes promote plant growth and fitness through the production of phytohormones or biofertilizers, or by alleviating abiotic and biotic stress tolerance. Strengthening of the plant immune system and suppression of disease are associated with the production of novel antibiotics, secondary metabolites, siderophores, and fertilizers such as nitrogenous or other industrially interesting chemical compounds. Endophytic bacteria can be used for phytoremediation of environmental pollutants or the control of fungal diseases by the production of lytic enzymes such as chitinases and cellulases, and their huge host range allows a broad spectrum of applications to agriculturally and pharmaceutically interesting plant species. More recently, endophytic bacteria have also been used to produce nanoparticles for medical and industrial applications. This review highlights the biotechnological possibilities for bacterial endophyte applications and proposes future goals for their application.

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Effect of Pseudomonas luteola on mobilization of phosphorus and growth of young apple trees (Ligol)—Pot experiment

Cited by 18 publications

References 53 publications

Physiological Diversity of Spitsbergen Soil Microbial Communities Suggests Their Potential as Plant Growth-Promoting Bacteria

Physiological Diversity of Spitsbergen Soil Microbial Communities Suggests Their Potential as Plant Growth-Promoting Bacteria

Heavy metal tolerant Pseudomonas protegens isolates from agricultural well water in northeastern Algeria with plant growth promoting, insecticidal and antifungal activities

Harnessing Bacterial Endophytes for Promotion of Plant Growth and Biotechnological Applications: An Overview

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