Potential plant growth promoting activity of<i>Pseudomonas fluorescens</i>sp. isolated from cotton (<i>Gossypium hirsutum</i>) crop

Nehra, Vibha; Saharan, Baljeet Singh; Choudhary, Madhu

doi:10.5958/j.0976-058x.48.2.017

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…The modification in growth and development of damask rose by these PGPR isolates may be because of different mechanisms of actions like production of plant hormones and siderophore, solubilization of insoluble Phosphate and increased nutrient uptake (Pena and Reyes, 2007;Nehra et al, 2014;Spaepen, 2015). This may imply that the ability of PGPR isolates with different mechanisms of actions is responsible for inducing the growth stimulating response in the inoculated cuttings of damask rose.…”

Section: Discussionmentioning

confidence: 99%

Screening of PGPR Isolates for Plant Growth Promotion of Rosa damascena

Tariq¹,

Riaz²,

Jaskani³

et al. 2016

IJAB

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The role of plant growth promoting rhizobacteria for growth and rooting in Rosa damascena Mill. cuttings was evaluated in this study. Fifteen distinctive and fast growing rhizobacterial colonies (strains) were chosen to inoculate the Rosa cuttings by dipping in them. Growth parameters like shoot length, new shoot fresh weight, new shoot dry weight, root length, root fresh weight and root dry weight showed highly significant results while mortality percentage of cutting was non-significant. Results of the pot experiments revealed that most of the isolates showed growth promoting activities in Rosa cuttings except the isolates B5 which was proved to be growth limiting strain as it gave 20-40% less result for all parameters. The most prominent results were produced by isolated strains F6 (Pseudomonas fluorescens), LSI19 (Rhizobium leguminosarum) and LC4 (Vibrios vulnificus). Isolate LSI19 showed maximum shoot length, new shoot fresh and dry weights with an increase (over un-inoculated control) of 51.6%, 55.2% and 48.0%, respectively. Root growth was positively influenced by isolate F6 with maximum root length and root fresh and dry weights (173.0%, 68.7% and 124.7%, respectively). All the other strains enhanced cutting growth characters up to 30-60% compared to control. Strains LSI19, F6 and LC4 were proved to be superior strains in all growth attributes. Results on the bases of total score obtained by each strain in all growth parameters showed that strains LSI19, F6 and LC4 got first three positions. Therefore, these three strains (LSI19, F6 and LC4) were selected for further studies.

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Section: Discussionmentioning

confidence: 99%

Screening of PGPR Isolates for Plant Growth Promotion of Rosa damascena

Tariq¹,

Riaz²,

Jaskani³

et al. 2016

IJAB

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show abstract

“…from Solanum tuberosum (Ahmed and Hasnain, 2010), Pseudomonas sp. from apple rhizosphere (Sharma et al 2014), Pseudomonas fluorescens from Gossypium hirsutum (Nehra et al 2014), Fluorescens pseudomonads from Oryza sativa (Suresh et al 2014) and P. fluorescens and P. putida from Hordeum vulgaris (Meliani et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Extraction of Indole-3-acetic Acid from Plant Growth Promoting Rhizobacteria of Bamboo Rhizosphere and Its Effect on Biosynthesis of Chlorophyll in Bamboo Seedlings

Maya

Gauchan

Khanal

et al. 2020

IJARe

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Background: Indole-3-acetic acid (IAA), a principal phytohormone, controls several crucial physiological processes of plants. It ameliorates plant growth by stimulating cell elongation, root initiation, seed germination and seedling growth. Alteration of IAA level by plant growth promoting rhizobacteria leads to varied impacts on plant growth and development. Methods: Soil samples were collected from bamboo (Bambusa tulda, B. nutans subsp. cupulata, B. balcooa and Dendrocalamus strictus) rhizosphere. Altogether five bacterial isolates were screened by serial dilution method and subjected to biochemical analysis. The isolate BUX1 with high IAA production capacity was optimized for IAA production. IAA was partially purified and quantified from the bacterial extract by thin layer chromatography (TLC). The influence of extracted bacterial IAA on chlorophyll biosynthesis in bamboo seedlings of B. tulda was compared with uninoculated control plants. Results: Biochemical analysis revealed that all the isolates belonged to genus Bacillus which were found capable of producing IAA. During optimization, BUX1 isolate produced 99.13 µg ml-1 of IAA at 37°C, pH 7, 3 mg l-1 concentration of L-tryptophan and 150 rpm agitation rate after 192 hour of incubation. The Rf value of the bacterial IAA during TLC was identical to that of standard IAA (0.425) indicating that IAA was present in crude extract of Bacillus (BUX1). The influence of bacterial IAA on chlorophyll biosynthesis in bamboo seedlings was significant in comparison to uninoculated plants. Therefore, this isolate could be a prospective candidate to be employed as biofertilizer.

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Morphology characterization of bioactivator microorganisms in product of septick tank phosphate degradator

Amalia

Fibriana

astuti

et al. 2020

J. Phys.: Conf. Ser.

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Septic Tank is a shelter for solid materials of human waste (faeces) which will quickly fill up when there is no decomposition process by bacteria decomposers. The amount of bacterial decomposers in a septic tank is generally less compared to the accumulation rate, so it is necessary to supply bacteria decomposers. The addition of these microorganisms is very cheap when compared to the cost of desludging or drying beside being practical, healthy and environmentally friendly. The decomposing bacteria (microorganisms) will decompose the solid materials in the septic tank into water (H2O) and some gas (CO2).Microorganisms that can decompose or degrade human faeces are PAOs (polyphosphate accumulating organisms) by degrading the polyphosphate into phosphate. Microorganisms that play a role in the decrease of phosphates are bacteria and fungi. Aerobic bacteria such as Pseudomonas sp. is one of the phosphate-degrading microorganisms. This research used the Pour Plate and gram staining method for microscopic observation to find the morphology of Pseudomonas sp.

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Potential plant growth promoting activity ofPseudomonas fluorescenssp. isolated from cotton (Gossypium hirsutum) crop

Cited by 3 publications

References 29 publications

Screening of PGPR Isolates for Plant Growth Promotion of Rosa damascena

Screening of PGPR Isolates for Plant Growth Promotion of Rosa damascena

Extraction of Indole-3-acetic Acid from Plant Growth Promoting Rhizobacteria of Bamboo Rhizosphere and Its Effect on Biosynthesis of Chlorophyll in Bamboo Seedlings

Morphology characterization of bioactivator microorganisms in product of septick tank phosphate degradator

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