Phosphorus Mobilizing Capacity of Selected Grain Legumes Grown Under Phosphorus-Deficient Conditions

Thennegedara, T. G. R. M.; Dissanayaka, D. M. S. B.

doi:10.4038/tar.v32i4.8413

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…This reduces the use of synthetic N fertilisers for plant fertilisation and, consequently, the cost of growing crops [4,5]. Some legume species are also able to take up mineral phosphorus compounds that are difficult to dissolve in soil and incorporate them into their biological cycles [6,7]. In addition to these benefits, the harvesting of legumes also leaves a large amount of aboveand below-ground residues in the field, which can supplement the C org and N stock in soil after mineralisation.…”

Section: Introductionmentioning

confidence: 99%

Organic Carbon, Nitrogen Accumulation and Nitrogen Leaching as Affected by Legume Crop Residues on Sandy Loam in the Eastern Baltic Region

Tripolskaja

Kazlauskaite-Jadzevice

Razukas

2023

Plants

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Legumes have a wide range of positive effects on soil properties, including nitrogen and carbon storage, soil structure and the phytosanitary condition of crops. From an agronomic point of view, legumes are most valued for their ability to take up atmospheric nitrogen in symbiosis with nitrogen-fixing bacteria. The aim of this research was to determine the effect of legume residues (peas, fodder beans, narrow-leaved lupins) on the N (Ntotal) and organic carbon (Corg) accumulation in soil and N leaching under temperate climate conditions. The experiment was carried out in lysimetric equipment in 2016–2023. The effect of legumes on Corg and Ntotal accumulation in soil and N leaching were studied in a Fabaceae–Cereals sequence. Three species of legumes—peas, fodder beans and narrow-leaved lupines—were tested; spring barley (Hordeum vulgare L.) was grown as a control treatment. The lysimeter surface area was 1.75 m2 and the experimental soil layer was 0.60 m (sand loam Haplic Luvisol). It was found that after harvesting, more residues were incorporated into the soil with lupines (p < 0.05), which, compared to pea and bean residues, increased Ntotal and Corg concentrations in the soil. There was a strong correlation (r = 0.95) between the Ntotal concentration in the soil and the N amount incorporated with residues. Mineral N released during residue decomposition was leached from the humic horizon under conditions of excess moisture in the autumn–winter period and increased the nitrate concentration in the lysimeter water. The increase in concentration was recorded within 5 to 6 months after the application of the residues. As a result, the N leaching losses increased on average by 24.7–33.2% (p < 0.05) during the year of legume cultivation. In the following year, after legume residue incorporation, the effect of residues on nitrate concentration and N leaching decreased and did not differ significantly from that of barley residues.

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Section: Introductionmentioning

confidence: 99%

Organic Carbon, Nitrogen Accumulation and Nitrogen Leaching as Affected by Legume Crop Residues on Sandy Loam in the Eastern Baltic Region

Tripolskaja

Kazlauskaite-Jadzevice

Razukas

2023

Plants

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“…Increasing evidence ascertains that some plant species efficiently utilize certain sparingly accessible P sources, determining morphological, physiological and biochemical modifications of the rhizosphere (Thennegedara and Dissanayaka 2021;Wang et al 2011;Zhang et al 2011;Zhou et al 2021). These include adjustments of root traits and architecture such as length, surface area, fineness, and root hair density (Rao et al 1999), rhizosphere acidification through the release of protons (H + ), root exudation of organic acid anions, upregulation of genes encoding high-affinity P transporters (PHOSPHATE TRANS-PORTER, PHT), enhanced production and secretion of P-hydrolyzing enzymes, and symbiotic associations with mycorrhizal fungi (Adu-Gyamfi et al 2009;Akhtar et al 2008;Jin et al 2014;Wang and Lambers 2020;Zhang et al 2011;Zhou et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Tomato plant responses induced by sparingly available inorganic and organic phosphorus forms are modulated by strigolactones

et al. 2022

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Background and aims Phosphorus (P) is an essential nutrient for plant growth, but is also one of the least accessible in soil. Plants have evolved several strategies to cope with P deficiency and recently the role of the phytohormones strigolactones (SLs) in modulating tomato plants acclimation to P shortage has been described. How SLs regulate the use of P from sparingly accessible P sources, such as organic P or precipitated metal-P systems, is however still unknown in tomato. Methods In this study, we compared P acquisition strategies of wild-type (WT) and SL-depleted tomato plants grown hydroponically in the presence of dissolved inorganic phosphate (Pi), dissolved myo-inositol hexaphosphate (myoInsP6), or their coprecipitated form following Fe(II) oxidative precipitation. Results Irrespective of the P treatment, SL-depleted plants accumulated more P in their tissues than the WT, possibly due to the constitutively higher expression of high-affinity P transporters and activity of P-hydrolyzing enzymes. Wild-type plants were conversely more effective at acidifying their growth medium and exuding more organic compounds in the presence of dissolved myoInsP6 or coprecipitated forms of P, but this behaviour did not translate into a higher P acquisition. Conclusions The two genotypes activated different subsets of responses to bypass low P bioavailability, although the P acquisition efficiency (PAE) was not effectively increased. Strigolactone-depleted plants achieved higher PAE values than WT plants regardless of the applied P form, highlighting a central role of SLs in controlling P uptake and optimizing the cost/benefit ratio of P acquisition.

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Phosphorus Mobilizing Capacity of Selected Grain Legumes Grown Under Phosphorus-Deficient Conditions

Cited by 2 publications

References 29 publications

Organic Carbon, Nitrogen Accumulation and Nitrogen Leaching as Affected by Legume Crop Residues on Sandy Loam in the Eastern Baltic Region

Organic Carbon, Nitrogen Accumulation and Nitrogen Leaching as Affected by Legume Crop Residues on Sandy Loam in the Eastern Baltic Region

Tomato plant responses induced by sparingly available inorganic and organic phosphorus forms are modulated by strigolactones

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