Pseudomonas fluorescens R68 assisted enhancement in growth and fertilizer utilization of Amaranthus tricolor (L.)

John, C; Jishma, P.; Karthika, N.; Nidheesh, K. S.; Ray, Joseph George; Mathew, Jyothis; Radhakrishnan, E. K.

doi:10.1007/s13205-017-0887-2

Cited by 23 publications

(7 citation statements)

References 27 publications

(30 reference statements)

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“…1). The bacterial isolates used in the study have been demonstrated to have efficient growth enhancement effect in various plant systems (Jimtha John et al 2017). Hence, the result can be due to the colonization of selected bacteria on V. unguiculata.…”

Section: Resultsmentioning

confidence: 99%

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Differential modulation of phytoelemental composition by selected Pseudomonas spp.

et al. 2018

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Plant growth promoting rhizobacteria (PGPR) are bioresources with potential application in ecofriendly agricultural practices. The beneficial effects of PGPR have been attributed to their ability to produce phytohormone, organic acid, siderophore, and also due to nitrogen fixation among others. In the present study, previously isolated plant growth promoting rhizospheric spp. were evaluated for growth enhancement effect in seedlings. Elemental profiling of treated plant was further carried out by inductively coupled plasma-mass spectroscopy. Results of the study showed significant increase in growth parameters such as shoot length, root length and root numbers for treated plants when compared to control. Most of the macro and micro elements were also found to get modulated by interaction with applied spp. However, a differential modulation was observed for plants when treated with each of the spp., which could be due to their variable interaction with the selected plant. The results of the study indicate the role of each of the associated microbial partner to specifically influence the plant nutrient mobilization along the soil plant axis. The cumulative effect of the plant microbiome hence may decide the global nutritional status of plants as per the available environmental conditions.

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Section: Resultsmentioning

confidence: 99%

“…Both control and treated seedlings were watered daily and observed periodically. The plants were harvested after 1 week and growth parameters such as root length, shoot length and root numbers were analysed (Jimtha John et al 2017).…”

Section: Methodsmentioning

confidence: 99%

Differential modulation of phytoelemental composition by selected Pseudomonas spp.

et al. 2018

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“…However, the NPK treatment, P. monteilii (BF2P5‐1), and P. fluorescens (BF4P2‐5) recorded significantly higher plant biometric attributes. Several authors have reported increased plant height using Pseudomonas species (Dharni et al., 2014; Jimtha John et al., 2017). Seed germination and plant growth depend on nutrient availability.…”

Section: Discussionmentioning

confidence: 99%

Synergistic effects of substrate inoculation with Pseudomonas strains on tomato phenology, yield, and selected human health‐related phytochemical compounds

Issifu,

Naitchede,

Ateka

et al. 2023

Agrosystems Geosci & Env

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Plant growth‐promoting rhizobacteria enhances nutritional availability during root colonization. Pseudomonas is the most popular bioinoculant due to its synergistic effects on plant development. This study evaluated the impact of four Pseudomonas strain substrate inoculations on tomato phenology, yield, and selected phytochemical components relevant to human health. The bacterial isolates have been characterized morphologically, biochemically, physiologically, and phylogenetically. Tomato plants on cocopeat substrate were inoculated individually with a bacterial suspension (optical density [OD]600 2.0). Controls included nitrogen–phosphate–potassium (NPK) fertilizer and tap water. The greenhouse experiment was laid out in a completely randomized design with five replications. Data were taken 30, 60, 90, and 120 days after inoculation. All four bacterial isolates could fix nitrogen, solubilize phosphate, and potassium and synthesize indole acetic acid in vitro. The 16S rRNA of the strains BF1P2‐6, BF2P1‐2, BF2P5‐1, and BF4P2‐5 were identified as Pseudomonas putida Y22, Pseudomonas taiwanensis GDLB‐32, Pseudomonas monteilii Bil‐NOR3_15, and Pseudomonas fluorescens Y5, respectively. The strains grew best at pH 7, NaCl 0.0%, and 35°C. Inoculated tomato plants tested over a period of 4 months in a greenhouse showed a significant increase in growth, leaf variables, and yield attributes. Pseudomonas‐inoculated plants were the highest in tannins (46.96 mg/100 g), followed by lycopene (45.57 mg/100 g) and Carotenoids (31.87 mg/100 g). The antioxidant activity of tomato fruit extracts showed the potential for free radicals scavenging activity against 2, 2‐diphenyl‐1‐picrylhydrazyl. Conditions such as pH and electrical conductivity for the cocopeat substrate were within acceptable limits. Bacterial strains and NPK increased cocopeat nitrogen, phosphate, and potassium bioavailability. This study reveals that Pseudomonas strains improve plant growth, yield, and health‐related phytochemical substances in tomato fruits, which could broaden their application in fruit and vegetable crops.

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“…Generally, this group associates with plant roots in a beneficial way because it plays an important role in increasing plant growth, and soil fertility and also acts as a biocontrol agent for plant pathogens [5]. Groups of soil bacteria such as Bacillus, Pseudomonas, Azotobacter, and Rhizobium are reported as prominent PGPR [3,6,7]. There are PGPR groups that live freely in the plant root area and are symbionts or endophytes in the root tissue.…”

Section: Introductionmentioning

confidence: 99%

Plant growth promoting rhizobacteria exploration on butterfly pea (Clitoria ternatea l) from North Maluku Indonesia

Nurhasanah,

Papuangan,

Sundari

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The Plant Growth Promoting Rhizobacteria (PGPR) is associated with the roots and nodules of butterfly peas (Clitoria ternatea L.). This study aims to explore the PGPR in the rhizosphere of butterfly peas and to study their potential for biofertilizer. Characterization of PGPR was based on their ability to phosphate dissolution, auxin production, and nitrogen fixation as well as synergistic and antagonistic tests, and molecular identification. A total of 11 phosphate solubilizing bacteria isolates were isolated from the rhizosphere of butterfly peas while two isolates were taken from nodules. The RTF2 isolate from the rhizosphere had the highest phosphate solubility index. Meanwhile, the RTDH5-1, F1.1, and F2.1 showed strong inhibition ability against the growth of the pathogenic Rhizoctonia solani. The nitrogenase activity of isolates F2.1 and F1.1 from nodules were 0.975 μmol mL-1 g-1 h-1; while the IAA production was 7.87 and 7.05 mg L-1, respectively. The F1.1 had 100% similarity with Bacillus aryabhattai while F2.1 was 99.84% similar with Rhizobium sp. Both isolates can be used in biofertilizer formulation for North Maluku butterfly peas.

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Pseudomonas fluorescens R68 assisted enhancement in growth and fertilizer utilization of Amaranthus tricolor (L.)

Cited by 23 publications

References 27 publications

Differential modulation of phytoelemental composition by selected Pseudomonas spp.

Differential modulation of phytoelemental composition by selected Pseudomonas spp.

Synergistic effects of substrate inoculation with Pseudomonas strains on tomato phenology, yield, and selected human health‐related phytochemical compounds

Plant growth promoting rhizobacteria exploration on butterfly pea (Clitoria ternatea l) from North Maluku Indonesia

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