Silicon increases phosphorus (P) uptake by wheat under low P acid soil conditions

Kostic, Ljiljana; Nikolić, Nina; Bosnić, Dragana; Samardžić, Jelena; Nikolić, Miroslav

doi:10.1007/s11104-017-3364-0

Cited by 167 publications

(118 citation statements)

References 39 publications

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“…Kostic et al. () have shown Si to affect P acquisition of plants due to upregulation of P i ‐transporter genes and enhanced organic acid exudation. This is still an area of great debate ( Coskun et al., ), but the results of our study did not support the idea of silicate‐promoted enhanced phosphate availability in soil.…”

Section: Discussionmentioning

confidence: 99%

“…Prevalence of silica ions has been linked to enhanced phosphate availability in soil (Singh et al, 2005;Tubana et al, 2016;Kostic et al, 2017). As the rocks weather, silicic acid is released to the soil.…”

Section: Phosphorusmentioning

confidence: 99%

“…In the literature there is a debate as to whether increased phosphate availability is a direct causality of ion competition for specific sorption sites as suggested by Brown and Mahler (1989), a causality of pH changes or caused by physiological changes in plants. Kostic et al (2017) have shown Si to affect P acquisition of plants due to upregulation of P i -transporter genes and enhanced organic acid exudation. This is still an area of great debate (Coskun et al, 2019), but the results of our study did not support the idea of silicate-promoted enhanced phosphate availability in soil.…”

Section: Phosphorusmentioning

confidence: 99%

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Glacially abraded rock flour from Greenland: Potential for macronutrient supply to plants

Gunnarsen

Jensen

Gómez‐Muñoz

et al. 2019

J. Plant Nutr. Soil Sci.

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Rock flour (RF) is a fine‐grained material produced naturally by glacial movement and resulting bedrock abrasion. In Greenland fluvial transported RF from the inland ice sheet sediments in riverbeds and marine outflows. This fine‐sized RF (50% < 9.8 µm) has a high reactivity and may therefore potentially be used to rejuvenate nutrient poor soils and provide nutrients to plants. The aim of this study was to evaluate the ability of a RF from Greenland to supply P, K, Mg, and S to plants. A double‐pot system was used, in which ryegrass (Lolium perenne L.) could take up nutrients from both a hydroponic solution and a soil‐compartment with or without RF amendment; a soil mixture or pure sand was used in the soil‐compartment to estimate RF‐soil interaction effects. Omission of single nutrients from the hydroponic solution allowed assessment of which nutrients the RF in the soil‐compartment was able to supply. Ryegrass biomass was harvested four times during 62 days. We found that RF could supply K continuously to plants grown in soil or sand, but insufficient to fully circumvent K deficiency. During 62 days 5.8% and 4.3% of the applied K from RF was accumulated in the aboveground plant tissue in soil and sand, respectively. Mg was supplied from RF to plants in sand, but no significant effects were observed in soil, possibly due to background soil Mg availability. The amounts of P and S supplied to plants were insignificant. These results indicate the potential of Greenland RF to act as a slow release K and Mg fertilizer.

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Section: Discussionmentioning

confidence: 99%

Section: Phosphorusmentioning

confidence: 99%

Section: Phosphorusmentioning

confidence: 99%

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Glacially abraded rock flour from Greenland: Potential for macronutrient supply to plants

Gunnarsen

Jensen

Gómez‐Muñoz

et al. 2019

J. Plant Nutr. Soil Sci.

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“…Remarkably, Si has been reported to alleviate a wide range of abiotic stresses, including radiation (Shen et al ., ), lodging (Savant et al ., ), wounding (Kim et al ., ), temperature (Muneer et al ., ), hypoxia (Fleck et al ., ), salinity (Flam‐Shepherd et al ., ), drought (Liu et al ., ), nutrient deficiency, such as that of iron (Fe; Pavlovic et al ., ), P (Kostic et al ., ) and K (Chen et al ., ), and metal toxicity (e.g. cadmium (Cd), Shao et al ., ; manganese (Mn), Che et al ., ; arsenic (As), Sanglard et al ., ; aluminum (Al), Wang et al ., ; and copper (Cu), Mateos‐Naranjo et al ., ).…”

Section: Silicon and Abiotic Stress: A Proliferation Of Proposed Mechmentioning

confidence: 99%

The controversies of silicon's role in plant biology

et al. 2018

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Contents Summary 67 I. Introduction 68 II. Silicon transport in plants: to absorb or not to absorb 69 III. The role of silicon in plants: not just a matter of semantics 71 IV. Silicon and biotic stress: beyond mechanical barriers and defense priming 76 V. Silicon and abiotic stress: a proliferation of proposed mechanisms 78 VI. The apoplastic obstruction hypothesis: a working model 79 VII. Perspectives and conclusions 80 Acknowledgements 81 References 81 SUMMARY: Silicon (Si) is not classified as an essential plant nutrient, and yet numerous reports have shown its beneficial effects in a variety of species and environmental circumstances. This has created much confusion in the scientific community with respect to its biological roles. Here, we link molecular and phenotypic data to better classify Si transport, and critically summarize the current state of understanding of the roles of Si in higher plants. We argue that much of the empirical evidence, in particular that derived from recent functional genomics, is at odds with many of the mechanistic assertions surrounding Si's role. In essence, these data do not support reports that Si affects a wide range of molecular-genetic, biochemical and physiological processes. A major reinterpretation of Si's role is therefore needed, which is critical to guide future studies and inform agricultural practice. We propose a working model, which we term the 'apoplastic obstruction hypothesis', which attempts to unify the various observations on Si's beneficial influences on plant growth and yield. This model argues for a fundamental role of Si as an extracellular prophylactic agent against biotic and abiotic stresses (as opposed to an active cellular agent), with important cascading effects on plant form and function.

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“…Although salinity usually decreases P levels in plant tissues, 49 several previous studies have shown that salinity either increased or had no effect on P uptake. 50,51 Therefore, it could be assumed that several parameters are involved in P uptake such as temperature, water availability in root environment, the species and even the cultivar. 52 Concerning the leaf nutrient content, results revealed that Ca content did not vary, regardless of the tested treatments.…”

Section: Postharvest Applicationsmentioning

confidence: 99%

Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

et al. 2019

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BACKGROUND Using water with high salinity for plant fertigation may have detrimental effects on plant development and total yield and on the quality of the crop produced. As a possible means to alleviate the negative effects of salinity, silicon (Si) can be incorporated in the nutrient solution supplied to plants. In the present study, hydroponically grown tomato (Solanum lycopersicum Mill.) plants were subjected to two different salinity levels (0 and 50 mmol L−1 NaCl) with and without the application of Si (0 and 2 mmol L−1 K2SiO3) in order to evaluate its possible positive impact on mitigation of salinity stress‐induced symptoms. An additional experiment was implemented with postharvest Si application (sodium silicate) to investigate effects on the shelf‐life of tomato fruit. RESULTS Salinity (50 mmol L−1 NaCl) decreased plant size, total yield and fresh fruit weight while a high percentage of blossom end rot symptoms of tomato fruit was also observed. The application of Si in the nutrient solution counteracted these detrimental effects, generating a higher yield and healthier fruit (lower blossom end rot incidence) compared to the untreated plants (no application of Si). Salinity improved several quality‐related traits in tomato fruit, resulting in higher marketability, whereas the addition of Si (pre‐ and postharvest) maintained fruit firmness following storage thereby increasing the shelf‐life of tomato fruit. CONCLUSIONS These findings indicate that Si application (pre‐ and postharvest) could provide an effective means of alleviating the unfavorable effects of using low‐quality water in plant fertigation on tomato plant development, fruit yield and post‐harvest quality, through increased fruit firmness. © 2019 Society of Chemical Industry

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Silicon increases phosphorus (P) uptake by wheat under low P acid soil conditions

Cited by 167 publications

References 39 publications

Glacially abraded rock flour from Greenland: Potential for macronutrient supply to plants

Glacially abraded rock flour from Greenland: Potential for macronutrient supply to plants

The controversies of silicon's role in plant biology

Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

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