Phosphate and potassium-solubilizing bacteria effect on the growth of rice

Bakhshandeh, Esmaeil; Pirdashti, Hemmatollah; Lendeh, Khadijeh Shahsavarpour

doi:10.1016/j.ecoleng.2017.03.008

Cited by 127 publications

(46 citation statements)

References 12 publications

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“…Rice seedlings (cv. Pajohesh, an improved cultivar) were inoculated with each bacterial suspension at room temperature (25°C) for 5 h (Bakhshandeh et al 2017). Control rice seedlings were also treated in the same way with noninoculated NB medium before transplanting in the field and pot.…”

Section: Inoculantsmentioning

confidence: 99%

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Khanghahi¹,

Pirdashti²,

Rahimian³

et al. 2019

Photosynt.

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The current research was performed to investigate the effects of three potassium-solubilizing bacteria (KSB) strains (Pantoea agglomerans, Rahnella aquatilis, and Pseudomonas orientalis) on leaf photosynthetic characteristics in rice (Oryza sativa L. cv. Pajohesh). A pot and a field experiment were conducted in a paddy field. The results indicated that the KSB inoculums significantly enhanced chlorophyll (Chl) a, Chl a+b, SPAD value, and stomatal conductance as compared to the control in both experiments, especially when applied along with half the recommended dose of the potassium chemical fertilizer. KSB inoculations, alone or combined with K fertilizer, significantly increased the value of photochemical quenching, photosynthetic electron transport rate, and the effective quantum efficiency as compared to the control. In conclusion, these native KSB strains could be used as inoculants to reduce consumption of K chemical fertilizer and improve the efficiency of photosynthesis for rice production under the flooding irrigation conditions.

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Section: Inoculantsmentioning

confidence: 99%

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Khanghahi¹,

Pirdashti²,

Rahimian³

et al. 2019

Photosynt.

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“…For example, Osman (2009) used only the solid Aleksandrov medium for isolation of KRB, whereas Meena et al (2015) and Zhang & Kong (2014) followed primary isolation of KRB in solid media with liquid assays in the Aleksandrov broth medium. In some studies, efficiency of K-releasing bacteria has been assessed not only in in vitro conditions (Liu et al, 2006;Meena et al, 2015) but this potential has also been checked after inoculation of target plants with isolated KRB (Basak & Biswas, 2010;Zhang & Kong, 2014;Bakhshandeh et al, 2017). Twelve KRB were isolated from the rhizosphere of common Kharif crops based on their ability to solubilize waste mica (muscovite and biotite) in a plate assay.…”

Section: Plant Growth and K Uptake By Tomato In The Presence Of Krbmentioning

confidence: 99%

Isolation and identification of potassium‐releasing bacteria in soil and assessment of their ability to release potassium for plants

Sarikhani

Oustan

Ebrahimi

et al. 2018

European J Soil Science

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Summary The application of potassium (K)‐releasing microorganisms is a promising approach for increasing K availability in soil. The objectives of this study were to isolate and characterize the K‐releasing bacteria (KRB) and to evaluate their contribution to the solubilization of K from muscovite and biotite, and to the assimilation of released K by tomato in a pot culture experiment. Soil samples were screened in both solid and liquid Aleksandrov media to isolate bacteria with the potential to release K from biotite and muscovite. Our results from in‐vitro experiments revealed that more K was released in treatments with KRB than in the uninoculated media (control). Under the best conditions an increase of 188 and 127% was obtained for biotite and muscovite, respectively; among the isolates with the largest releasing ability it was 49 mg l−1. The most efficient bacteria were identified as the Pseudomonas genus. Results of the pot culture experiment showed that the concentration and content of K in plant tissue were considerably more than those in any of the controls with no living organisms present. Results revealed that significantly more biomass was accumulated and K acquired in most pots treated with bacterial strains than in the control, especially for Pseudomonas sp. strain S10‐3. This treatment increased K concentation and content by more than 50 and 70%, respectively, in tomato aerial tissue. Further research is necessary to examine the effects of these bacterial strains on the mobilization of K‐bearing minerals under field conditions. Highlights The aim was to determine if bacterial isolates can accelerate K release from micas for plants. We investigated the potential of some isolated bacteria to solubilize K from muscovite and biotite. Identification of efficient isolates showed that KRB belonged to the Pseudomonas genus. Pseudomonas sp. strain S10‐3 increased K concentration in tomato aerial tissue by more than 50%.

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“…The KSB micro‐organisms can promote K‐solubilization from silicate mineral are very important to enhance the fertility status of soils (Bakhshandeh et al . ; Basak et al . ; Nath et al .…”

Section: Introductionmentioning

confidence: 99%

“…Strains belonged to Enterobacter aerogenes, Pantoea agglomerans, Agrobacterium tumefaciens, Microbacterium foliorum, Myroidesod oratimimus and Burkholderia cepacia which has been isolated from tobacco rhizosphere were capable of solubilizing K-feldspar powder in solid and liquid media. The KSB micro-organisms can promote K-solubilization from silicate mineral are very important to enhance the fertility status of soils (Bakhshandeh et al 2017;Basak et al 2017;Nath et al 2017). Inoculation of Mesorhizobium sp., Paenibacillus sp.…”

Section: Introductionmentioning

confidence: 99%

Impact of plant growth promoting rhizobacteria on different forms of soil potassium under wheat cultivation

Khani

Enayatizamir

Masir

2019

Lett Appl Microbiol

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This study aimed to investigate the effect of some plant growth promoting rhizobacteria with potassium dissolution ability on different forms of potassium in soil under the cultivation of wheat. The factorial experiment was conducted as a randomized complete design with three replications in greenhouse conditions. The treatments consisted of bacterium inoculation (without inoculation, Enterobacter cloacae Rhizo_33, Pseudomonas sp. Rhizo_9, consortium of Enterobacter cloacae Rhizo_33 and Pseudomonas sp. Rhizo_9), potassium application (2·87 mg K kg−1 of soil and without potassium application).The results indicated that soils treated with Enterobacter cloacae Rhizo_33, either receiving potassium or not, maintain a higher amount of exchangeable K (337 mg kg−1) and water‐soluble K (1·25 and 1·31 meq L−1 with and without K application respectively). The nonexchangeable K and nitric acid‐extractable K values were decreased by inoculating bacterial strains. The grain yield was significantly enhanced by the inoculation of bacterial strains irrespective of rates of potassium application. About 19·16% increase of grain yield was recorded by inoculation of Enterobacter cloacae Rhizo_33 and without potassium application. A significantly greater amount of K uptake in grain was obtained in soils treated with Enterobacter cloacae Rhizo_33, with and without the application of potassium (28·7 and 30·7 mg per pot respectively). There was a significant (P < 0·01) and positive correlation between grain yield and grain, shoot and root K uptake. Potassium uptake had a positive significant correlation with water‐soluble K and exchangeable K; it was negatively correlated with K (HNO3). The data suggested that inoculation of soil with mentioned bacteria can improve plant growth and potassium uptake. Significance and Impact of the Study As one of the macronutrients, Potassium is the most abundant absorbed cation in most plants and exists in soil in different forms. Soluble and exchangeable forms of potassium (K) are important with regard to plant uptake. K‐solubilizing bacteria can convert insoluble potassium to soluble forms; therefore using K‐solubilizing bacteria as biofertilizers is a sustainable solution for the improvement of plant growth, nutrition, root growth, plant competitiveness and reducing the use of potassium chemical fertilizer.

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Phosphate and potassium-solubilizing bacteria effect on the growth of rice

Cited by 127 publications

References 12 publications

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Isolation and identification of potassium‐releasing bacteria in soil and assessment of their ability to release potassium for plants

Impact of plant growth promoting rhizobacteria on different forms of soil potassium under wheat cultivation

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