Labile organic matter intensifies phosphorous mobilization in paddy soils by microbial iron (III) reduction

Khan, Imran; Fahad, Shah; Wu, Lianghuan; Zhou, Wei; Xu, Peng; Sun, Zheng; Salam, Abdus; Imran, Muhammad; Jiang, Mengdie; Kuzyakov, Yakov; Hu, Ronggui

doi:10.1016/j.geoderma.2019.06.011

Cited by 53 publications

(24 citation statements)

References 66 publications

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“…Soil pH is a pivotal factor in ascertaining the immobilization of phosphorus in soil (Zhu et al 2018). Moreover, labile organic carbon, which acts as a source of energy for microorganisms, is also one of the prominent factors that magnify the phosphorus mobilization in paddy soil through microbial iron (III) reduction (Khan et al 2019a). For healthy crop growth Table 1 World phosphate fertilizer demand (thousand tonnes P 2 O 5 ) forecast (FAO 2019) and yield, a critical (optimum) phosphorus concentration in soil should be maintained, as presented in Table 2.…”

Section: Phosphorus Pool In Soilmentioning

confidence: 99%

Phosphate-Solubilizing Microorganisms: Mechanism and Their Role in Phosphate Solubilization and Uptake

Rawat

Das

Shankhdhar

et al. 2020

J Soil Sci Plant Nutr

280

130

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Phosphorus is the second most critical macronutrient after nitrogen required for metabolism, growth, and development of plants. Despite the abundance of phosphorus in both organic and inorganic forms in the soil, it is mostly unavailable for plant uptake due to its complexation with metal ions in the soil. The use of agrochemicals to satisfy the demand for phosphorus to improve crop yield has led to the deterioration of the ecosystem and soil health, as well as an imbalance in the soil microbiota. Consequently, there is a demand for an alternate cost-effective and eco-friendly strategy for the biofortification of phosphorus. One such strategy is the application of phosphate-solubilizing microorganisms which can solubilize insoluble phosphates in soil by different mechanisms like secretion of organic acids, enzyme production, and excretion of siderophores that can chelate the metal ions and form complexes, making phosphates available for plant uptake. These microbes not only solubilize phosphates but also promote plant growth and crop yield by producing plant-growth-promoting hormones like auxins, gibberellins, and cytokinins, antibiosis against pathogens, 1-aminocyclopropane-1-carboxylic acid deaminase which enhances plant growth under stress conditions, improving plant resistance to heavy metal toxicity, and so on. Pyrroloquinoline quinine (pqq) and glucose dehydrogenase (gcd) are the representative genes for phosphorus solubilization in microorganisms. The content presented in this review paper focuses on different mechanisms and modes of action of phosphate-solubilizing microorganisms, their contribution to phosphorus solubilization, growth-promoting attributes in plants, and the molecular aspects of phosphorus solubilization.

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Section: Phosphorus Pool In Soilmentioning

confidence: 99%

Phosphate-Solubilizing Microorganisms: Mechanism and Their Role in Phosphate Solubilization and Uptake

Rawat

Das

Shankhdhar

et al. 2020

J Soil Sci Plant Nutr

280

130

View full text Add to dashboard Cite

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“…Further, additional element or ion concentrations in pore water are of interest with respect to plant nutrient availability, toxicity for plants and microbes (e.g., Al 3+ ), element mobilization or dislocation, and thus leaching potential of plant nutrients such as nitrate (NO 3 – )‐N, which may also contaminate water bodies. Also, dissolved organic C (DOC) concentration can enhance the effect of reducing conditions and thus could contribute to P mobilization (Khan et al., 2019). Already single factors such as the O 2 status of soil or plant nutrient concentrations in pore water are known to affect plant productivity (Poulton, Johnston, & White, 2013; Steffens, Hütsch, Eschholz, Lošák, & Schubert, 2005).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus cycling and spring barley crop response to varying redox potential

Baumann

Nastah

Shaheen

et al. 2020

Vadose Zone Journal

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For arable soils, it is not clear whether closing a controlled drainage system leads to P mobilization due to water table rise and associated changes in redox-induced biogeochemical processes. Therefore, we investigated P mobilization at different redox conditions using three spring barley (Hordeum vulgare L.) cropped lysimeters filled with monoliths of arable northeastern German soil profiles. Pore water samples were collected weekly from three different depths, and dissolved (<0.45 μm) element concentrations of total C, P, Al, Fe, Mn, Ca, Mg, and K, as well as inorganic and organic C (DIC and DOC) and P (P i and P o), SO 4 2−-S, and NO 2 −-N and NO 3 −-N were determined. The total P concentration in pore water collected from a given lysimeter at a given time was 1.8 mg P L − 1 maximum. Organic P concentrations in subsoil solutions were positively correlated with Fe concentrations. Grain yield of spring barley ranged between 5.6 and 6.5 Mg ha − 1, and total biomass P uptake was negatively correlated with the stable P stocks of the soil profiles. Results suggest that reductive conditions in subsoils led to dissolution of pedogenic Fe-(oxy)hydroxides and release of P o compounds, the latter of which were more important for biomass P uptake than P released from stable P compounds. Overall, closing the drainage at the field site could represent a moderate P mobilization risk, which would probably be lower compared with a P mobilization risk caused by a heavy rainfall event. Abbreviations: DIC, dissolved inorganic carbon; DOC, dissolved organic carbon; DRW, drying and rewetting; Eh, redox potential; ICP-OES, inductively coupled plasma-optical emission spectroscopy; P i , inorganic phosphorus; P o , organic phosphorus; PVC, polyvinyl chloride; TC, total carbon. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…5) suggest an imminent decline in the ecosystem services provided by the impacted mangrove forests, especially regarding carbon sequestration and contaminant immobilization. As Fe oxyhydroxides contribute to soil organic matter stabilization (Dicen et al 2019;Sun et al 2019; Fujitake 2020), the lower Fe content in the dead mangrove soils (Fig. 7) may affect this stabilization mechanism.…”

Section: Environmental Consequencesmentioning

confidence: 99%

“…The MRFe leads to the dissolution Fe oxyhydroxides and the subsequent release of the previously sorbed elements (e.g., phosphorus and/or metals) (Du Pan et al, 2019;. In fact, several studies have reported the increase of P and metals availability in wetland soils and waters as a result of MRFe (Khan et al, 2019;Li et al, 2012;Hesterberg, 2006 Du Laing et al, 2009;Miao et al, 2006;Tack et al, 2006;Zhang et al, 2012).…”

Section: General Introductionmentioning

confidence: 99%

“…Conversely, the sulfate reduction process may act as a sink for trace metals, as the produced sulfides (e.g., mackinawite, greigite, pyrite, and other metallic sulfides) decrease the bioavailability of trace metals (Lin and Morse 1991;Huerta-Diaz and Morse 1992;Liamleam and Annachhatre 2007;Ye et al 2010;) via co-precipitation. Additionally, Fe oxyhydroxides favor soil organic matter stabilization by enhancing organo-mineral interactions (Sun et al 2019;…”

Section: Introductionmentioning

confidence: 99%

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Iron geochemistry in tropical estuarine soils affected by anthropic and natural disasters

Queiroz¹

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Labile organic matter intensifies phosphorous mobilization in paddy soils by microbial iron (III) reduction

Cited by 53 publications

References 66 publications

Phosphate-Solubilizing Microorganisms: Mechanism and Their Role in Phosphate Solubilization and Uptake

Phosphate-Solubilizing Microorganisms: Mechanism and Their Role in Phosphate Solubilization and Uptake

Phosphorus cycling and spring barley crop response to varying redox potential

Iron geochemistry in tropical estuarine soils affected by anthropic and natural disasters

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