Phosphorus Solubilization: Mechanisms, Recent Advancement and Future Challenge

Emami‐Karvani, Zarrindokht; Chitsaz-Esfahani, Zahra

doi:10.1007/978-3-030-73507-4_4

Cited by 7 publications

(3 citation statements)

References 179 publications

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“…The vigorous microbial activities in the soil optimize nutrient cycling and maximize the efficiency of their use in agronomy [71]. A recent extensive review [72] of greenhouse and field trials showed a marked improvement in the growth responses of various crops to inoculation with phosphate-solubilizing microorganisms.…”

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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“…Immobilized cell technology was also applied in SmF with P-solubilizing filamentous fungi combining the advantages of both the immobilization state of the cells and the repeated-batch fermentations [66,95] (Figure 2). In many cases, these biofertilizers demonstrated high P-solubilizing activity but also multifunctional properties, for example, biocontrol [96,97]. Due to the continuous efforts of many scientists, the progress in fungal P-solubilization in fermentation conditions during the last 20-30 years is impressive.…”

Section: Alternative Approach To Application Of P-solubilizing Fungimentioning

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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“…Although there are many types of phosphorus-containing minerals, most of them exist in nature in the form of insoluble phosphates, and the availability of soluble phosphorus is limited to meet the needs of plants [ 4 , 5 ]. However, the main limiting factor for more than 40% of global cropland crop productivity is phosphorus deficiency [ 6 , 7 ]. Low-phosphorus stress affects the synthesis of plant carbohydrates, hindering cell division, inhibiting plant growth and development, and strongly reducing plant physiological activity [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Aspergillus niger Fermentation Broth Promotes Maize Germination and Alleviates Low Phosphorus Stress

Tian

Zhang

et al. 2023

Microorganisms

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Aspergillus niger is a type of soil fungus with the ability to dissolve insoluble phosphate and secrete organic metabolites such as citric acid. However, whether cell-free Aspergillus niger fermentation broth (AFB) promotes maize growth and alleviates low-phosphorus stress has not been reported. In this study, we explored their relationship through a hydroponics system. The results indicated that either too low or too high concentrations of AFB may inhibit seed germination potential and germination rate. Under low phosphorus conditions, all physiological indexes (biomass, soluble sugar content, root length, etc.) increased after AFB was applied. A qRT-PCR analysis revealed that the expression of the EXPB4 and KRP1 genes, which are involved in root development, was upregulated, while the expression of the CAT2 and SOD9 genes, which are keys to the synthesis of antioxidant enzymes, was downregulated. The expression of LOX3, a key gene in lipid peroxidation, was down-regulated, consistent with changes in the corresponding enzyme activity. These results indicate that the application of AFB may alleviate the oxidative stress in maize seedlings, reduce the oxidative damage caused by low P stress, and enhance the resistance to low P stress in maize seedlings. In addition, it reveals the potential of A. niger to promote growth and provides new avenues for research on beneficial plant-fungal interactions.

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Phosphorus Solubilization: Mechanisms, Recent Advancement and Future Challenge

Cited by 7 publications

References 179 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

Aspergillus niger Fermentation Broth Promotes Maize Germination and Alleviates Low Phosphorus Stress

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