Identification and characterization of potassium solubilizing bacteria (KSB) from Indo-Gangetic Plains of India

Saha, Madhumonti; Maurya, B. R.; Meena, Vijay Singh; Bahadur, Indra; Kumar, Ashok

doi:10.1016/j.bcab.2016.06.007

Cited by 150 publications

(34 citation statements)

References 43 publications

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“…These values were lower than those reported for the strain Bacillus mucilaginosus, AS1.153 when solubilizing K in motmorillonite, kaolinite and K-feldspar, with values ranging between 90 and 140 mg K L -1 . However, these values are higher than those obtained by Zhang and Kong (2014), where 17 isolates of KSB reached from 0.59 to 4.4 mg K L -1 , and by Pseudomonas azotoformans, which solubilized 6.03 mg K L -1 (Saha et al, 2016). The solubilization of K varies with the nature of the minerals (motmorillonite, kaolinite, K-feldspar, muscovite, biotite, illite, orthoclases) that contain K and aerobic conditions (Meena et al, 2015).…”

Section: Resultsmentioning

confidence: 76%

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Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Reyes-Castillo

Gerding²,

Oyarzúa³

et al. 2019

Chil. j. agric. res.

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Nitrogen, P and K are essential macronutrients that are not readily available to plants. Rhizobacteria are able to convert these unavailable forms for subsequent uptake by the plant, diverse species have been characterized as N2 fixers, P solubilizers and capable to solubilize mineral K from unavailable forms. The objective of this study was to select rhizobacteria capable of improving NPK availability and promoting tomato (Solanum lycopersicum L.) growth. Fifteen strains were studied. Four strains were selected for their capacity to fix N2, three for their ability to solubilize P, and six for their capacity to solubilize biotite and K-feldspar, isolated from tomato, lentil, chili pepper, faba bean and lettuce crops in Andisol and Alfisol soils. Through 16SrRNA sequencing, selected strains were identified as Pseudomonas gessardi, P. koreensis, P. brassicacearum, P. marginalis, Acinetobacter calcoaceticus and Rahnella aquatica. Phosphorus solubilizing strains did not show a positive effect on plant growth or an increase in available soil P. The N2 fixing bacteria Tmt-16 strain increased root growth in 23.57%; maintained the highest N content in plant tissue, 2.60%, higher amount of N available in the soil, 2.95 mg kg-1 , and a higher content of N-NH4 + 1.95 mg kg-1. The K solubilizing strains Ls-C21, Ltj-62 and LsC-58 reached 17.0 to 19.0 mg kg-1 available K and 0.04 to 0.05 mg kg-1 exchangeable K (p ≤ 0.05.). These four endemic rhizobacteria can be potentially used as biofertilizers, allowing a reduction in the use of chemical fertilizers and a more sustainable production of tomatoes.

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Section: Resultsmentioning

confidence: 76%

“…In fact, Pseudomonas is a widespread bacterial genus, which presents the highest P solubilizing activity in rhizosphere soil (Bahena et al, 2015). Pseudomonas azotoformans has also been reported as K solubilizing bacteria (Saha et al, 2016).…”

Section: Identification Of the Selected Bacteriamentioning

confidence: 99%

Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Reyes-Castillo

Gerding²,

Oyarzúa³

et al. 2019

Chil. j. agric. res.

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“…Bacillus licheniformis BHU18 was shown to solubilize potassium and produce IAA. The strain was found to tolerate various regimes of pH and hence can be an effective bioinoculant in both acidic and alkaline soils (Saha et al ). KSB are often applied with a mineral form of potash like mica waste.…”

Section: Role Of Bacillus In Potassium and Other Nutrients Uptakementioning

confidence: 99%

Bacillusspecies in soil as a natural resource for plant health and nutrition

et al. 2019

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The genus Bacillus is one of the predominant bacterial genera found in soil, and several species of this genus have been reported from diverse ecological niches. Endowed with tremendous genetic and metabolic diversity, Bacillus spp. serve multiple ecological functions in soil ecosystem from nutrient cycling to conferring stress tolerance to plants. Members of the genus Bacillus are known to have multiple beneficial traits which help the plants directly or indirectly through acquisition of nutrients, overall improvement in growth by production of phytohormones, protection from pathogens and other abiotic stressors. This functionally versatile genus is one of the most commercially exploited bacteria in the agro-biotechnology industry. Still its potential has not been realized sufficiently and requires an emphasis towards translating the relevant technologies from laboratory to land for the benefit of mankind.

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“…The KSB are effective in releasing K from inorganic and insoluble pools of total soil K through solubilization (Archana et al, 2013;Gundala et al, 2013;Keshavarz Zarjani et al, 2013;Meena et al, 2014;Meena et al, 2015b;Parmar and Sindhu, 2013;Saha et al, 2016;Zeng et al, 2012;Zhang et al, 2013). It has been reported that inoculation with KSB produced beneficial effect on growth of different plants (Ahmad et al, 2016;Bakhshandeh et al, 2017;Xiao et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Potassium solubilizing bacteria (KSB):: Mechanisms, promotion of plant growth, and future prospects A review

Etesami

Emami

Alikhani

2017

J. Soil Sci. Plant Nutr.

390

141

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Potassium (K) is considered as an essential nutrient and a major constituent within all living cells. Naturally, soils contain K in larger amounts than any other nutrients; however most of the K is unavailable for plant uptake. Application of chemical fertilizers has a considerably negative impact on environmental sustainability. It is known that potassium solubilizing bacteria (KSB) can solubilize K-bearing minerals and convert the insoluble K to soluble forms of K available to plant uptake. Many bacteria such as Acidothiobacillus ferrooxidans, Paenibacillus spp., Bacillus mucilaginosus, B. edaphicus, and B. circulans have capacity to solubilize K minerals (e.g., biotite, feldspar, illite, muscovite, orthoclase, and mica). KSB are usually present in all soils, although their number, diversity and ability for K solubilization vary depending upon the soil and climatic conditions. KSB can dissolve silicate minerals and release K through the production of organic and inorganic acids, acidolysis, polysaccharides, complexolysis, chelation, and exchange reactions. Hence, the production and management of biological fertilizers containing KSB can be an effective alternative to chemical fertilizers. This article presents an overview of current trends and challenges on KSB, mechanisms and their role in plant growth promotion, and eventually gives some perspectives for research on K in agriculture.Keywords: Bio-fertilizer, potassium bearing minerals; potassium solubilization, plant and bacteria interactions, PGPRs 898Etesami et al

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Identification and characterization of potassium solubilizing bacteria (KSB) from Indo-Gangetic Plains of India

Cited by 150 publications

References 43 publications

Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Bacillusspecies in soil as a natural resource for plant health and nutrition

Potassium solubilizing bacteria (KSB):: Mechanisms, promotion of plant growth, and future prospects A review

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Identification and characterization of potassium solubilizing bacteria (KSB) from Indo-Gangetic Plains of India

Cited by 150 publications

References 43 publications

Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Plant growth-promoting rhizobacteria able to improve NPK availability: selection, identification and effects on tomato growth

Bacillusspecies in soil as a natural resource for plant health and nutrition

Potassium solubilizing bacteria (KSB):: Mechanisms, promotion of plant growth, and future prospects ­ A review

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Potassium solubilizing bacteria (KSB):: Mechanisms, promotion of plant growth, and future prospects A review