Safety Level of Microorganism-Bearing Products Applied in Soil-Plant Systems

Mocali, Stefano; Canfora, Loredana; Malusà, Eligio; Moral, L. F. García del; Martos, Vanessa; Flor-Peregrín, Elena; Vassilev, Nikolay

doi:10.3389/fpls.2022.862875

Cited by 10 publications

(4 citation statements)

References 89 publications

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“…Most studies have been conducted with bacteria; however, although they are the main decomposers of organic matter and dictate soil carbon and other elements, the role of fungi is the subject of relatively few studies. Many fungi can solubilize insoluble phosphates or facilitate P acquisition by plants; and therefore, they form an important part of commercial microbial products, with Aspergillus, Penicillium, and Trichoderma being the most efficient [73].…”

Section: Discussionmentioning

confidence: 99%

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Arias,

Heredia Abarca,

del Carmen Perea Rojas

et al. 2023

Plants

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The use of phosphate-solubilizing fungi in coffee cultivation is an alternative to the use of traditional fertilizers. The objective of this study was to analyze the mechanisms involved in the phosphorus solubilization of fungal strains and to evaluate the effect of a phosphate-solubilizing strain on coffee plants. For this, phosphorus-solubilizing fungal strains were selected for evaluation of their solubilization potential and phosphatase activity. Coffee plants were inoculated in the field with a phosphate-solubilizing strain, and the soil and foliar soluble phosphorus contents, as well as coffee bean yield, were quantified. Of the 151 strains analyzed, Sagenomella diversispora, Penicillium waksmanii, and Penicillium brevicompactum showed the highest solubilization. Aspergillus niger and P. waksmanii presented the highest soluble phosphorus values; however, P. brevicompactum showed the highest phosphatase activity. The P. brevicompactum strain inoculated on the coffee plants did not favor the foliar phosphorus content but increased the soil soluble phosphorus content in two of the coffee plantations. The plants inoculated with the phosphate-solubilizing strain showed an increase in coffee bean weight on all plantations, although this increase was only significant in two of the three selected coffee plantations.

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Section: Discussionmentioning

confidence: 99%

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Arias,

Heredia Abarca,

del Carmen Perea Rojas

et al. 2023

Plants

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“…This diversity of variables means that one approach for the production and application of fungal P-solubilizers cannot fit all the different contexts, but that different and interconnected strategies should be investigated (Figure 2). Based on the scientific literature, a strong wave of novel strategies and wider application of fungal biofertilizers are expected in the near future including in the field of fungal P-solubilization, always looking for safe and healthy final products [106,107].…”

Section: Discussionmentioning

confidence: 99%

Fungi, P-Solubilization, and Plant Nutrition

Mendes

Deriu

Benedetto³

et al. 2022

Microorganisms

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The application of plant beneficial microorganisms is widely accepted as an efficient alternative to chemical fertilizers and pesticides. It was shown that annually, mycorrhizal fungi and nitrogen-fixing bacteria are responsible for 5 to 80% of all nitrogen, and up to 75% of P plant acquisition. However, while bacteria are the most studied soil microorganisms and most frequently reported in the scientific literature, the role of fungi is relatively understudied, although they are the primary organic matter decomposers and govern soil carbon and other elements, including P-cycling. Many fungi can solubilize insoluble phosphates or facilitate P-acquisition by plants and, therefore, form an important part of the commercial microbial products, with Aspergillus, Penicillium and Trichoderma being the most efficient. In this paper, the role of fungi in P-solubilization and plant nutrition will be presented with a special emphasis on their production and application. Although this topic has been repeatedly reviewed, some recent views questioned the efficacy of the microbial P-solubilizers in soil. Here, we will try to summarize the proven facts but also discuss further lines of research that may clarify our doubts in this field or open new perspectives on using the microbial and particularly fungal P-solubilizing potential in accordance with the principles of the sustainability and circular economy.

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“…The loss of soils biodiversity and health affects the quality and quantity of yields. We are aware, confirmed by numerous scientific studies, that the value of the soil is primarily determined by its biocomponents, including microbiota currently considered one of the most important factors in the health of the soil and the plants grown in it (Vassileva et al, 2022). It is indicated that the potential threats to microorganisms caused by NPs include, among others, their removal from the rhizosphere, disturbance of important biological functions, such as nitrogen fixation, phosphate solubilisation, potassium uptake, nodulation and hormone synthesis (Ameen et al, 2021).…”

Section: Introductionmentioning

confidence: 96%

Comparative effect of silver nanoparticles on maize rhizoplane microbiome in initial phase of plants growth

Gorczyca,

Przemieniecki,

Oćwieja

2024

Int. Agrophys.

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The aim of the experiments was to evaluate shifts in the prokaryotic and eukaryotic microbiome of maize rhizoplanes treated with five forms silver nanoparticles with different surface properties, produced by chemical reduction of silver(V) nitrate. Metagenomic studies were performed using appropriate procedures to create NGS libraries and sequences to species. All silver nanoparticles forms used moderately limited the growth of maize, without significantly affecting normalized difference vegetation indexes. Significant shifts in the taxa of the microbiome while preserving biodiversity were noted under the influence of silver nanoparticles, and the reaction of bacteria and eukaryotes was different. The eukaryotic microbiome, richer in the studied substrate, turned out to be more sensitive, showing greater qualitative and quantitative changes than the bacteriome. silver nanoparticles did not reduce the occurrence of mycorrhizal fungi, enriched the occurrence of Acidobacteriota and, with the exception of trisodium citrate reduction/sodium borohydride stabilization type, enriched the beneficial bacteria of Devosia. Within silver nanoparticles, distinct effects have been demonstrated for type with trisodium citrate reduction/sodium borohydride stabilization versus cysteamine reduction/trisodium citrate stabilization versus group: hydroxylamine hydrochloride reduction, tannic acid reduction and trisodium citrate reduction. The beneficial changes in maize rhizoplane microbiome can be attributed special to silver nanoparticles reduced using hydroxylamine hydrochloride.K e y w o r d s: maize, soil, microbiome, silver nanoparticles

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Safety Level of Microorganism-Bearing Products Applied in Soil-Plant Systems

Cited by 10 publications

References 89 publications

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Selection and Characterization of Phosphate-Solubilizing Fungi and Their Effects on Coffee Plantations

Fungi, P-Solubilization, and Plant Nutrition

Comparative effect of silver nanoparticles on maize rhizoplane microbiome in initial phase of plants growth

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