Perspectives of potassium solubilizing microbes in sustainable food production system: A review

Sattar, Adeel; Naveed, Muhammad; Ali, Mohsin; Zahir, Zahir A.; Nadeem, Sajid; Yaseen, Muhammad; Meena, Vijay Singh; Farooq, Muhammad; Singh, Ravender; Rahman, Mukhlesur; Meena, H. N.

doi:10.1016/j.apsoil.2018.09.012

Cited by 173 publications

(95 citation statements)

References 109 publications

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“…Enhanced crop productivity and improved nutritional quality grown on degraded soils are proposed to be the best solutions to combat malnutrition and hidden hunger [70,71]. Quinoa seeds are distinguished from cereals probably due to significant source of essential amino acids, vitamins and macro-and micro-nutrients [72,73].…”

Section: Plant Physiological and Biochemical Attributesmentioning

confidence: 99%

Alleviation of Salinity Induced Oxidative Stress in Chenopodium quinoa by Fe Biofortification and Biochar—Endophyte Interaction

et al. 2020

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Iron-biofortification is a sustainable food-based approach to combat iron deficiency by increasing iron content and bioavailability in agronomic crops. Siderophore producing microbes offer a sustainable and low-cost way to increase iron supply in crops. Also, certain substances released from organic amendments act as iron-chelators which increase the solubility as well as the availability of iron to plants. Present study investigated the role of siderophore-producing endophytic bacteria and biochar on iron-fortification of a novel crop quinoa in iron-limited saline conditions. The surface-disinfected seeds of quinoa were inoculated with Burkholderia phytofirmans PsJN (CFU = 109) and sown in saline soil (EC 20 dS m−1) amended with biochar (1% w/w). Results revealed that biochar and PsJN particularly when applied together significantly enhanced plant growth, grain yield, and grain nutrient contents of quinoa. Strikingly, iron concentration in quinoa grains was increased up to 71% by the combined application of biochar and PsJN. Moreover, plant physiological parameters were also improved significantly by the integrated application. However, enzymatic/non-enzymatic antioxidants activities were decreased by integrated treatment thus ameliorated salinity stress. Our study suggests that integrated application of siderophore-producing bacteria and biochar could be a promising, sustainable and cost-effective strategy which is easily integratable into the existing farming practices to achieve food fortification with micronutrients in developing countries.

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Section: Plant Physiological and Biochemical Attributesmentioning

confidence: 99%

Alleviation of Salinity Induced Oxidative Stress in Chenopodium quinoa by Fe Biofortification and Biochar—Endophyte Interaction

et al. 2020

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“…are capable of dissolving potassium bearing minerals, constituting a supply of K to plants. These potassium solubilizing microorganisms and their mechanisms have been recently reviewed (Sattar et al, 2019).…”

Section: Macronutrientsmentioning

confidence: 99%

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

Ferreira

Soares

2019

Science of The Total Environment

168

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In order to address the ever-increasing problem of the world's population food needs, the optimization of farming crops yield, the combat of iron deficiency in plants (chlorosis) and the elimination/reduction of crop pathogens are of key challenges to solve. Traditional ways of solving these problems are either unpractical on a large scale (e.g. use of manure) or are not environmental friendly (e.g. application of iron-synthetic fertilizers or indiscriminate use of pesticides). Therefore, the search for greener substitutes, such as the application of siderophores of bacterial source or the use of plant-growth promoting bacteria (PGPB), is presented as a very promising alternative to enhance yield of crops and performance. However, the use of microorganisms is not a risk-free solution and the potential biohazards associated with the utilization of bacteria in agriculture should be considered. The present work gives a current overview of the main mechanisms associated with the use of bacteria in the promotion of plant growth. The potentiality of several bacterial genera (Azotobacter, Azospirillum, Bacillus, Pantoea, Pseudomonas and Rhizobium) regarding to siderophore production capacity and other plant growth-promoting properties are presented. In addition, the field performance of these bacteria genera as well as the biosafety aspects related with their use for agricultural proposes are reviewed and discussed.

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“…Moreover, exchangeable K and solution K constitute 98% and 2% of the readily available forms of K in soils respectively. The release of nonexchangeable K to exchangeable form can occur when soil microbial activity increases (Sattar et al 2019) or the level of exchangeable and solution K decreases through crop removal and/or leaching (Sparks 1987). Soil minerals make up more than 90-98% of soil potassium exists in mineral structures (Sparks 1987).…”

Section: Introductionmentioning

confidence: 99%

“…Research into finding an alternative indigenous source of potassium for plant uptake as well as maintaining potassium status in soils for sustaining crop production has been highlighted. Therefore, the introduction of alternative ways to release potassium from potassium-bearing minerals such as microbial activation can effectively help cutting down on the use of chemical fertilizers (Zhang and Kong 2014;Sattar et al 2019).With regard to the strategic importance of wheat and its by-products in consumable commodities basket, the present study aimed at investigating the effect of potassium-solubilizing bacteria on different forms of potassium and its uptake by wheat.…”

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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Perspectives of potassium solubilizing microbes in sustainable food production system: A review

Cited by 173 publications

References 109 publications

Alleviation of Salinity Induced Oxidative Stress in Chenopodium quinoa by Fe Biofortification and Biochar—Endophyte Interaction

Alleviation of Salinity Induced Oxidative Stress in Chenopodium quinoa by Fe Biofortification and Biochar—Endophyte Interaction

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

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

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