Phosphate solubilizing bacteria can significantly contribute to enhance P availability from polyphosphates and their use efficiency in wheat

Khourchi, Said; Elhaissoufi, Wissal; Loum, Mohamed; Ibnyasser, Ammar; Haddine, Meryam; Ghani, Rachid; Barakat, Abdellatif; Zeroual, Youssef; Rchiad, Zineb; Delaplace, Pierre; Bargaz, Adnane

doi:10.1016/j.micres.2022.127094

Cited by 32 publications

(32 citation statements)

References 69 publications

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“…However, phosphorus uptake by plants, in the form of phosphate ions, depends on soil physicochemical parameters (Pereira et al, 2020), the application method and its frequency (Rady et al, 2018;Chtouki et al, 2022), the root exudation and architecture (Khourchi et al, 2022a), and the rhizosphere microbial activity (Wahid et al, 2020). In this regard, different studies have proven the effectiveness of phosphate solubilizing bacteria (PSB) in improving crop yield due to improved P levels in the soil (Khourchi et al, 2022b). Kohler et al (2009) found that Pseudomonas mendocina enhanced the salt tolerance of lettuce plants resulting in a reduction of catalase activity with an increase in shoot dry weight and proline concentration in leaves.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic performance and nutrient uptake under salt stress: Differential responses of wheat plants to contrasting phosphorus forms and rates

et al. 2022

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Salt stress impacts phosphorus (P) bioavailability, mobility, and its uptake by plants. Since P is involved in many key processes in plants, salinity and P deficiency could significantly cause serious damage to photosynthesis, the most essential physiological process for the growth and development of all green plants. Different approaches have been proposed and adopted to minimize the harmful effects of their combined effect. Optimising phosphorus nutrition seems to bring positive results to improve photosynthetic efficiency and nutrient uptake. The present work posed the question if soluble fertilizers allow wheat plants to counter the adverse effect of salt stress. A pot experiment was performed using a Moroccan cultivar of durum wheat: Karim. This study focused on different growth and physiological responses of wheat plants grown under the combined effect of salinity and P-availability. Two Orthophosphates (Ortho-A & Ortho-B) and one polyphosphate (Poly-B) were applied at different P levels (0, 30 and 45 ppm). Plant growth was analysed on some physiological parameters (stomatal conductance (SC), chlorophyll content index (CCI), chlorophyll a fluorescence, shoot and root biomass, and mineral uptake). Fertilized wheat plants showed a significant increase in photosynthetic performance and nutrient uptake. Compared to salt-stressed and unfertilized plants (C+), CCI increased by 93%, 81% and 71% at 30 ppm of P in plants fertilized by Poly-B, Ortho-B and Ortho-A, respectively. The highest significant SC was obtained at 45 ppm using Ortho-B fertilizer with an increase of 232% followed by 217% and 157% for both Poly-B and Ortho-A, respectively. The Photosynthetic performance index (PItot) was also increased by 128.5%, 90.2% and 38.8% for Ortho-B, Ortho-A and Poly B, respectively. In addition, Poly-B showed a significant enhancement in roots and shoots biomass (49.4% and 156.8%, respectively) compared to C+. Fertilized and salt-stressed plants absorbed more phosphorus. The P content significantly increased mainly at 45 ppm of P. Positive correlations were found between phosphorus uptake, biomass, and photosynthetic yield. The increased photochemical activity could be due to a significant enhancement in light energy absorbed by the enhanced Chl antenna. The positive effect of adequate P fertilization under salt stress was therefore evident in durum wheat plants.

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Section: Introductionmentioning

confidence: 99%

Photosynthetic performance and nutrient uptake under salt stress: Differential responses of wheat plants to contrasting phosphorus forms and rates

et al. 2022

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“…Root functions related to phosphate foraging such as number of roots, root hair, lateral roots, frequency of root tips, branching intensity etc. have shown to be increased under the influence of PSR [101].…”

Section: Effect Of Psr On Root System Architecturementioning

confidence: 94%

Phosphate Solubilizing Rhizobacteria as Sustainable Management Strategy in Agrobiology

Tariq¹,

Ahmed²

2023

Environmental Sciences

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Phosphorous limits agricultural productivity due to its limited plant availability. Use of synthetic phosphate fertilizers disturbs soil fertility and ecosystem ecology as it contaminates environment. Plants have developed certain mechanisms to respond to P-scarcity, which involve release of specific chemical messengers through root exudates that attract rhizospheric phosphorbacteria to colonize plant root vicinity. Thus, use of phosphate-solubilizing bacteria/rhizobacteria (PSB/PSR) as biofertilizers is a safer approach toward sustainable agrobiology. These PSR are capable of solubilizing soil phosphate from insoluble to plant available form. Due to instability and slow movement of available phosphates in soils, they readily get incorporated with soil particles or chelates as metal complexes. In this scenario, PSR provide continuous chain of soluble phosphate to plants. PSR direct plant root system architecture toward available phosphate zones in soils. Moreover, there is an increased number of roots, root hair and lateral root, increase root absorbing surface area by increasing contact to soil particles. Hence, PSR-based root system morphology is a significant trait in measuring their agronomic efficiency. Moreover, PSB also possess phytostimulatory properties that significantly contribute to agricultural efficiency. Hence, the use of phosphate-solubilizing bacteria can improve crop productivity by increasing soil P-mobility and soil fertility.

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“…Therefore, it is crucial to design agronomic approaches that can mobilize legacy P in soil to maintain agricultural and environmental sustainability. Diversi cation strategies focus on the development of P-e cient crops, controlled-release fertilizers, P-solubilizing microorganisms, P biofertilizers, and appropriate fertilization practices to enhance the comprehensive use e ciency of P (Bovill et al 2013; Khourchi et al 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Legumes have a better use P ability from sparingly soluble soil P fractions to supply P to maize, especially in soils with high Pxation capacity (Horst et al 2001). Various factors such as temperature, pH, soil texture, moisture, enzymes, rhizosphere microbes, and earthworm in uence P solubilization and promote plant growth through biochemical, chemical, and physiochemical reactions (Beltran-Medina et al 2023; Dick and Tabatabai 1986;Elhaissou et al 2022;Melo et al 2018;Zhong et al 2017). Organic anions released by legumes, such as citrate, malate, and malonate, effectively facilitate the desorption, chelation, and complexation of iron (Fe) and aluminum (Al) oxides (Jones 1998; Nuruzzaman et al 2006;Zhou et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, roots and microorganisms secrete enzymes such as phosphatases, pyrophosphatases, and polyphosphatases to hydrolyze polyphosphate (PolyP) (Elhaissou et al 2022). Phosphatase, particularly extracellular enzymes, play a vital role in the process of facilitating the mineralization of organic P (Po) to orthophosphate (OrthP) (Nannipieri et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Soil Legacy Phosphorus Transformation in Long-term Fertilized Phaeozems Soil under Maize/Soybean Intercropping

Li,

Zhao,

Chen

et al. 2024

Preprint

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Root exudate could improve crop productivity and phosphorus (P) acquisition in maize/soybean intercrops. However, the synergistic effects between intercropped plants, the regulation of soil phosphatase activity, and P transformation corresponding to it remain elusive. Three kinds of root separation treatments, solid barrier (SB), mesh barrier (MB), and no barrier (NB), using pot experiment, were conducted to quantify the effects of plants, rhizosphere exudates exchange and the complete root interaction. Sequential extraction and 31P-NMR spectroscopic analysis methods complement each other, which can better explain the combination forms of P elements. This work suggests that maize under NB stimulated a decrease in NH4F-inorganic P (Pi, 7.91%) and occluded Pi (7.46%) compared to those under SB. In the presence of maize signaling chemicals (MB treatment), the percentage of mononucleotides was enriched, while neo-inositol hexakisphosphate, β-glycerophosphate, and phosphocholine declined in the soybean rhizosphere compared to SB. Under both two plants, phosphodiesterase (PDE) activity was negatively correlated with pyrophosphate. The activity of alkaline phosphatase (ALP) was the highest in the MB treatment of maize and soybean, which increased from 33.80 to 44.5 and 41.92 (ug g− 1 h− 1) compared with bulk soil. Maize under monocropping mainly mobilizes acid phosphatase (ACP), but it is converted to ALP and PDE when intercropping with soybean. Knowledge of P species in P-rich soils helps assess P potential transfer and provides new evidence for the value of cereal-legume intercrops in reducing fertilizer input.

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Phosphate solubilizing bacteria can significantly contribute to enhance P availability from polyphosphates and their use efficiency in wheat

Cited by 32 publications

References 69 publications

Photosynthetic performance and nutrient uptake under salt stress: Differential responses of wheat plants to contrasting phosphorus forms and rates

Photosynthetic performance and nutrient uptake under salt stress: Differential responses of wheat plants to contrasting phosphorus forms and rates

Phosphate Solubilizing Rhizobacteria as Sustainable Management Strategy in Agrobiology

Soil Legacy Phosphorus Transformation in Long-term Fertilized Phaeozems Soil under Maize/Soybean Intercropping

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