Functionalities of Phosphate-Solubilizing Bacteria of Rice Rhizosphere: Techniques and Perspectives

Dash, Nilima; Pahari, Avishek; Dangar, Tushar Kanti

doi:10.1007/978-981-10-5275-0_7

Cited by 10 publications

(17 citation statements)

References 27 publications

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Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

“…A second and major component of soil P is organic matter which contains organic P forms which may constitute 15 -85% of the total P in most soils (Dash et al, 2017). The solubilization of organic P forms occurs through mineralization by several PSB (Dash et al, 2017). The mineralization process is mediated by enzymes such as phosphatases and phytases (Behera et al, 2016(Behera et al, , 2017Dash et al, 2017;Maougal et al, 2014).…”

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

“…The solubilization of organic P forms occurs through mineralization by several PSB (Dash et al, 2017). The mineralization process is mediated by enzymes such as phosphatases and phytases (Behera et al, 2016(Behera et al, , 2017Dash et al, 2017;Maougal et al, 2014). Phosphatases, which may be acid or alkaline in nature based on their pH optima (Jorquera et al, 2011), are nonspecific enzymes that are secreted by bacterial cells and require P as substrates (Beech et al, 2001) and function by dephosphorylating phospho-ester or phosphor-anhydride bonds of organic matter (Alori et al, 2017;Dash et al, 2017;S.…”

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

“…Bhattacharyya et al, 2020). Phytases, on the other hand, mediate the degradation of phytate or phytic acid which is the major component of organic P in soil (Dash et al, 2017;Pradhan et al, 2017). Plants generally cannot acquire phosphorus directly from phytate, however, the presence of PSM in the rhizosphere may compensate for this (Richardson & Simpson, 2011).…”

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

“…Khan et al, 2009). Other enzymes involved in organic P mineralization include phosphonatases (Dash et al, 2017;V. Kumar et al, 2013), and lyases (Dash et al, 2017;Salimpour et al, 2010) which function by cleaving organo-phosphonates.…”

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

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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Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

Section: Mechanisms Of P Solubilizing Plant Root Residing Bacteriamentioning

confidence: 99%

See 3 more Smart Citations

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

Aloo¹,

Makumba²,

Mbega³

2020

Preprint

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Phosphorus Solubilizing and Mineralizing Bacillus spp. Contribute to Rice Growth Promotion Using Soil Amended with Rice Straw

Gómez-Ramírez

Uribe-Vélez

2021

Curr Microbiol

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Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Kumar

Diksha

Sindhu

et al. 2022

Current Research in Microbial Sciences

220

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Highlights Agriculture plays an important role in a country's economy. In modern intensive agricultural practices, chemical fertilizers and pesticides are applied on large scale to increase crop production in order to meet the nutritional requirements of the ever-increasing world population. However, rapid urbanization with shrinking agricultural lands, dramatic change in climatic conditions and extensive use of agrochemicals in agricultural practices has been found to cause environmental disturbances and public health hazards affecting food security and sustainability in agriculture. Besides this, agriculture soils are continuously losing their quality and physical properties as well as their chemical (imbalance of nutrients) and biological health due to indiscriminate use of agrochemicals. Plant-associated microbes with their plant growth- promoting traits have enormous potential to solve these challenges and play a crucial role in enhancing plant biomass and crop yield under greenhouse and field conditions. The beneficial mechanisms of plant growth improvement include enhanced availability of nutrients (i.e., N, P, K, Zn and S), phytohormone modulation, biocontrol of phytopathogens and amelioration of biotic and abiotic stresses. This plant-microbe interplay is indispensable for sustainable agriculture and these microbes may perform essential role as an ecological engineer to reduce the use of chemical fertilizers. Various steps involved for production of solid-based or liquid biofertilizer formulation include inoculum preparation, addition of cell protectants such as glycerol, lactose, starch, a good carrier material, proper packaging and best delivery methods. In addition, recent developments of formulation include entrapment/microencapsulation, nano-immobilization of microbial bioinoculants and biofilm-based biofertilizers. Thus, inoculation with beneficial microbes has emerged as an innovative eco-friendly technology to feed global population with available resources. This review critically examines the current state-of-art on use of microbial strains as biofertilizers in different crop systems for sustainable agriculture and in maintaining soil fertility and enhancing crop productivity. It is believed that acquisition of advanced knowledge of plant-PGPR interactions, bioengineering of microbial communities to improve the performance of biofertilizers under field conditions, will help in devising strategies for sustainable, environment-friendly and climate smart agricultural technologies to deliver short and long terms solutions for improving crop productivity to feed the world in a more sustainable manner.

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Functionalities of Phosphate-Solubilizing Bacteria of Rice Rhizosphere: Techniques and Perspectives

Cited by 10 publications

References 27 publications

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

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

Phosphorus Solubilizing and Mineralizing Bacillus spp. Contribute to Rice Growth Promotion Using Soil Amended with Rice Straw

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

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