Phosphate-Solubilizing Microbes and Biocontrol Agent for Plant Nutrition and Protection: Current Perspective

Mitra, Debasis; Anđelković, Snežana; Panneerselvam, P.; Senapati, Ansuman; Vasić, Tanja; Ganeshamurthy, A. N.; Chauhan, Manisha; Uniyal, Navendra; Mahakur, Bhaswatimayee; Radha, T.

doi:10.1080/00103624.2020.1729379

Cited by 68 publications

(27 citation statements)

References 73 publications

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“…In fact, P and K positively affect plant metabolisms and resistance to biotic and abiotic stresses, while leading to a better soil fertility and crop production [3][4][5]. According to Mitra et al [6] P availability also improves other vital plant functions such as cell division, cell enlargement, and transformation of starch and sugars. In this context, the direct application of rock phosphate (RP) and rock potassium (RK) is a promising solution to lower the cost and provide a sustainable complement to conventional fertilization practices, which are not always adapted to the specificities of the African agriculture [7].…”

Section: Introductionmentioning

confidence: 99%

The Screening of Potassium- and Phosphate-Solubilizing Actinobacteria and the Assessment of Their Ability to Promote Wheat Growth Parameters

et al. 2021

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Soil fertility and plant nutrition require an adequate management of essential macronutrients such as potassium (K) and phosphorus (P), which are mandatory for plant development. Bioleaching of K and P bearing minerals improves their chemical weathering and increases the performance of the biofertilization strategies. In this study, in vitro and greenhouse experiments were carried out to investigate P and K solubilization traits of nine Actinobacteria (P13, P14, P15, P16, P17, P18, BC3, BC10, and BC11) under fertilization with rock phosphate (RP). K and P solubilization were evaluated on Alexandrov and NBRIP media containing mica and six RP samples, respectively. The actinobacterial strains were able to solubilize K in Alexandrov medium supplemented with RP. However, when soluble P was used instead of RP, only four strains of Actinobacteria (Streptomyces alboviridis P18–Streptomyces griseorubens BC3–Streptomyces griseorubens BC10 and Nocardiopsis alba BC11) solubilized K. The solubilization values of K ranged from 2.6 to 41.45 mg/L while those of P varied from 0.1 to 32 mg/L. Moreover, all strains were able to produce IAA, siderophore, HCN, and ammonia and significantly improved the germination rate and the vigor index of wheat. The pot experiments revealed that four strains (Streptomyces alboviridis P18, Streptomyces griseorubens BC3, Streptomyces griseorubens BC10, and Nocardiopsis alba BC11) significantly improved the growth parameters of wheat, namely root length (1.75–23.84%), root volume (41.57–71.46%), root dry weight (46.89–162.41%), shoot length (8.92–23.56%), and shoot dry weight (2.56–65.68%) compared to the uninoculated control. These findings showed that Streptomyces griseorubens BC10 and Nocardiopsis alba BC11 are promising candidates for the implementation of efficient biofertilization strategies to improve soil fertility and plant yield under rock P and rock K fertilization.

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Section: Introductionmentioning

confidence: 99%

The Screening of Potassium- and Phosphate-Solubilizing Actinobacteria and the Assessment of Their Ability to Promote Wheat Growth Parameters

et al. 2021

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“…A cluster of biofertilizers comprising beneficial rhizobacteria identified as plant growth-promoting rhizobacteria (PGPR) strains from genera of Pseudomonas, Azospirillum, Azotobacter, Bacillus, Burkholdaria, Enterobacter, Rhizobium, Erwinia, and Flavobacterium (Vessey 2003). Free-living PGPRs have shown potential as effective biofertilizers (Mitra et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Screening and identification of novel halotolerant bacterial strains and assessment for insoluble phosphate solubilization and IAA production

Joshi

Kumar

Brahmachari³

2021

Bull Natl Res Cent

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Background Salinity is typical in seashore soils due to the interruption of seawater in the groundwater. Soil microbes of coastal regions play a vital role in increasing plant yields. Microbe-plant associated growth and its wide spectrum with soil environment remain one of the prime factors in agriculture for field application. Making such, in this study, very precise research work is outlined to serve microbial-based solution for solubilizing the insoluble phosphate under various harsh environmental conditions and IAA production. Salt-affected soils along the coast of Bay of Bengal, Sundarbans, India, have been collected. Results A total of five isolates effectively solubilize the considerable amount of Tri-calcium phosphate {TCP, (Ca3PO4)2} ranging from 50.67 to 116.66 P2O5 parts per million (ppm) under optimized conditions, i.e., pH 8.0, 5 to 10% saline and 30 °C temperature. Out of five, three produced Indole Acetic Acid (IAA) ranging from 0.054 to 0.183 (g l−1). Identification of isolates has been carried out by morphology, biochemical characterization and 16S rDNA sequencing. Among the sequenced isolates, 1 belonged to Firmicutes, 3 were Proteobacteria and 1 was Actinobacteria. Conclusion This is the first report which shows the presence of phosphate solubilizing activity by the member of the genus Halomonas and Halobacillus from the study site. These stress-tolerant bacteria will deliver reliable and cost-effective methods to overcome the existing scenario of saline-affected agriculture.

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“…Phosphorus (P) is the second-most important nutrient after nitrogen in terms of plant growth and development (Alori et al, 2017;Kalayu, 2019;Mitra et al, 2020;Pradhan et al, 2017). This nutrient element is important in virtually every metabolic process in plants from photosynthesis, biosynthesis of macromolecules, and respiration to energy transfer and signal transduction (Billah et al, 2019;M.…”

Section: Introductionmentioning

confidence: 99%

“…It is a fundamental component of enzymes, proteins, coenzymes, nucleotides, phospholipids, and nucleic acids (Alaylar et al, 2020;Kafle et al, 2019;Kalayu, 2019). According to Mitra et al, (2020), P availability also improves other basic plant functions such as cell division, cell enlargement, and transformation of starches and sugars.…”

Section: Introductionmentioning

confidence: 99%

“…According to Mahidi et al, (2011) and Alaylar al (2020), P anions are highly reactive get immobilized through complex formation with different cations like Mg 2+ , Al 3+ , Ca 2+ , and Fe 3+ , especially under low pH and the fraction that is available to plants is generally very low. Consequently, P is often a major limiting plant nutrient in most soils (Santana et al, 2016), and artificial P fertilizers have for long been employed to cater for P deficits in agricultural farms (Mitra et al, 2020;S. B. Sharma et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Phosphate-Solubilizing Rhizobacteria: Diversity, Mechanisms, and Prospects in Sustainable Agriculture

Aloo¹,

Makumba²,

Mbega³

2020

Preprint

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Phosphorus (P) is the second-most important element after nitrogen that is required for plant growth. Although this element is abundant in most soils, it is rarely available in plant-accessible forms since most of it normally exists in soil in insoluble forms such as phosphates. In conventional agriculture, P is normally supplied as chemical fertilizer to satisfy plant P requirements. This, to a large extent, boosts plant production. However, chemical fertilizers are costly, have a huge carbon footprint, and are environmentally-unsustainable owing to the high energy requirements during their synthesis. Besides, P-containing agricultural run-offs contribute hugely to the eutrophication of water bodies and environmental degradation. Moreover, plants can consume only a small amount of chemically-supplied P since between 75 and 90% of this form of P normally get precipitated into complexes and rapidly become fixed in soil. These issues and concerns necessitate research into alternative and viable ways of supplying P to plants. Rhizobacteria have for decades been investigated in vivo and in planta as suitable tools in sustainable agriculture due to the plant-growth-promoting activities such as nutrients’ solubilization, nitrogen fixation, and production of phytohormones. Although a lot of research has been done on different nutrients-solubilizing rhizobacteria and their potential in sustainable agriculture, their mechanisms of action and prospects in sustainable agriculture remain to be fully understood. This review particularly focuses on the P solubilizing rhizobacteria and evaluates their diversity, mechanisms of action, and prospects in sustainable agriculture based on the present and future scenario of their application. Such information is useful in determining their potential and evaluating their prospects in promoting sustainable agricultural systems.

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Phosphate-Solubilizing Microbes and Biocontrol Agent for Plant Nutrition and Protection: Current Perspective

Cited by 68 publications

References 73 publications

The Screening of Potassium- and Phosphate-Solubilizing Actinobacteria and the Assessment of Their Ability to Promote Wheat Growth Parameters

The Screening of Potassium- and Phosphate-Solubilizing Actinobacteria and the Assessment of Their Ability to Promote Wheat Growth Parameters

Screening and identification of novel halotolerant bacterial strains and assessment for insoluble phosphate solubilization and IAA production

Phosphate-Solubilizing Rhizobacteria: Diversity, Mechanisms, and Prospects in Sustainable Agriculture

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