Valorization of Moroccan Phosphate Sludge Through Isolation and Characterization of Phosphate Solubilizing Bacteria and Assessment of Their Growth Promotion Effect on Phaseolus vulgaris

Ait-Ouakrim, El Houcine; Chakhchar, Abdelghani; Modafar, Cherkaoui El; Douira, Allal; Amir, Soumia; Ibnsouda-Koraichi, Saad; Belkadi, Bouchra; Filali‐Maltouf, Abdelkarim

doi:10.1007/s12649-023-02054-2

Cited by 6 publications

(2 citation statements)

References 62 publications

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“…Previous research has demonstrated that the Bacillus genera dominate the cultivable rhizobacterial population in the rhizosphere and root nodules. Furthermore, the rhizosphere soil and root nodules of several plants, including rice, wheat, tobacco, Panax notoginseng (Chinese ginseng), and so on, have dominant cultivable members of the Bacillus species [25]. The selected endophytic isolates were tested against P. myriotylum for their antifungal potential.…”

Section: Discussionmentioning

confidence: 99%

Plant growth‐promoting and biocontrol traits of endophytic Bacillus licheniformis against soft rot causing Pythium myriotylum in ginger plant

Alarjani,

Elshikh

2024

J Basic Microbiol

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Bacterial endophytes from plants harbor diverse metabolites that play major roles in biocontrol and improve plant growth. In this study, a total of 12 endophytic bacteria were isolated from the ginger rhizome. The strain K3 was highly effective in preventing mycelia growth of Pythium myriotylum (78.5 ± 1.5% inhibition) in dual culture. The cell‐free extract (2.5%) of endophyte K3 inhibited 76.3 ± 4.8% mycelia growth, and 92.4 ± 4.2% inhibition was observed at a 5% sample concentration. The secondary metabolites produced by Bacillus licheniformis K3 showed maximum activity against Pseudomonas syringae (24 ± 1 mm zone of inhibition) and Xanthomonas campestris (28 ± 3 mm zone of inhibition). The strain K3 produced 28.3 ± 1.7 IU mL−1 protease, 28.3 ± 1.7 IU mL−1 cellulase, and 2.04 ± 0.13 IU mL−1 chitinase, respectively. The ginger rhizome treated with K3 in the greenhouse registered 53.8 ± 1.4% soft rot incidence, and the streptomycin‐treated pot registered 78.3 ± 1.7% disease incidence. The selected endophyte K3 improved ascorbate peroxidase (1.37 ± 0.009 µmole ASC min−1 mg−1 protein), catalase (8.7 ± 0.28 µmole min−1 mg−1 protein), and phenylalanine ammonia‐lyase (26.2 ± 0.99 Umg−1) in the greenhouse. In addition, K3 treatment in the field trial improved rhizome yield (730 ± 18.4 g) after 180 days (p < 0.01). The shoot length was 46 ± 8.3 cm in K3‐treated plants, and it was about 31% higher than the control treatment (p < 0.01). The lytic enzyme‐producing and growth‐promoting endophyte is useful in sustainable crop production through the management of biotic stress.

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Section: Discussionmentioning

confidence: 99%

Plant growth‐promoting and biocontrol traits of endophytic Bacillus licheniformis against soft rot causing Pythium myriotylum in ginger plant

Alarjani,

Elshikh

2024

J Basic Microbiol

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“…The use of these chemicals pollutes environment, become part of food chain and ultimately assimilate in living organisms. Thereby, use of organic fertilizers is considered best possible solution for their cheap and environmentally friendly nature (Ait-Ouakrim et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Phosphate solubilization potential of PSB: An advance approach to enhance phosphorous availability for phytostimulation

Tariq,

Ahmed

2023

Preprint

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Rhizosphere engineering approach is considered a quantum leap in plant sciences. The current study focused on investigating rhizobacterial efficiency to mobilize bioavailable phosphate from insoluble-phosphate source. Phosphate-solubilization potential of four efficient phosphate solubilizing bacterial strains i.e., Pseudomonas songnenensis (GR3), Stutzerimonas stutzeri (HH2), Bacillus bingmayongensis (KH3) and Achromobacter aegrifaciens (MH1) was analyzed. The bacterial strain GR3 was observed as most efficient phosphate solubilizer. Interactions between various physiological parameters and phosphate solubilization efficiency of isolates was evaluated using surface response methodology. In-vitro experiments revealed that glucose significantly facilitated phosphorus solubilization at 37 ℃, with media having pH 7 and 0.5% phosphorous. Additionally, positive correlation among P-solubilization potential, acids produced and pH variations was observed. Plant microbe-interaction analysis was performed to evaluate the efficiency of these bacterial strains on various morpho-physiological responses of Zea mays L. For this purpose, various concentrations of tricalcium phosphate were applied to plants in the presence and absence of bacterial strains. The results showed that, lower phosphate levels trigger shoot development, improve plant weight and leaf formation whereas higher phosphate concentrations stimulated the development of longer root system. The bacterial strains GR3 and HH2 were observed as efficient phosphate-solubilizing bacteria (PSB) that positively stimulated plant morphological responses by triggering various biochemical attributes such as plant protein content, phytohormone homeostasis, macromolecule content, solute content and pigment content. Hence, the current study reviled that the use of these phosphate solubilizing PGPR are efficient phytostimulators used for crop production in replacement of chemical fertilizers which are carcinogenic and deteriorating our eco-system.

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Valorization of phosphate sludge and its bacterial biomass as a potential bioformulation for improving tomato growth

Ait-Ouakrim,

Ziane,

Chakhchar

et al. 2023

Environ Sci Pollut Res

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Valorization of Moroccan Phosphate Sludge Through Isolation and Characterization of Phosphate Solubilizing Bacteria and Assessment of Their Growth Promotion Effect on Phaseolus vulgaris

Cited by 6 publications

References 62 publications

Plant growth‐promoting and biocontrol traits of endophytic Bacillus licheniformis against soft rot causing Pythium myriotylum in ginger plant

Plant growth‐promoting and biocontrol traits of endophytic Bacillus licheniformis against soft rot causing Pythium myriotylum in ginger plant

Phosphate solubilization potential of PSB: An advance approach to enhance phosphorous availability for phytostimulation

Valorization of phosphate sludge and its bacterial biomass as a potential bioformulation for improving tomato growth

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