5 results on '"Vinci, Giovanni"'
Search Results
2. An alternative to mineral phosphorus fertilizers: The combined effects of Trichoderma harzianum and compost on Zea mays, as revealed by 1H NMR and GC-MS metabolomics.
- Author
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Vinci, Giovanni, Cozzolino, Vincenza, Mazzei, Pierluigi, Monda, Hiarhi, Spaccini, Riccardo, and Piccolo, Alessandro
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FERTILIZERS for corn , *PHOSPHATE fertilizers , *TRICHODERMA harzianum , *METABOLOMICS , *NUCLEAR magnetic resonance spectroscopy , *GAS chromatography/Mass spectrometry (GC-MS) - Abstract
The ability of Trichoderma harzianum (strain OMG-08) as plant growth promoting fungus (PGPF), was tested on Zea mays plants grown in soil pots added with different inorganic (triple superphosphate and rock phosphate) and organic (cow and horse manure composts) P fertilizers. The effect of treatments was evaluated by following the variations of plants dry biomass and nutrient content, as well as the metabolic changes in plant leaves by both GC-MS and NMR spectroscopy. A synergic effect was observed in treatments with both composts and fungus inoculation, in which not only plant growth and P uptake were enhanced, but also the expression of different metabolites related to an improved photosynthetic activity. Conversely, the combination of Trichoderma with inorganic fertilizers was less effective and even showed a reduction of plants shoot biomass and N content. The corresponding plant metabolome revealed metabolic compounds typical of biotic or abiotic stresses, which may be attributed to a reduced capacity of inorganic fertilizers to provide a sufficient P availability during plant growth. Our findings also indicate that the molecular composition of compost differentiated the Trichoderma activity in sustaining plant growth. The positive effects of the combined Trichoderma and compost treatment suggest that it may become an alternative to the phosphorus mineral fertilization. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
3. The molecular properties of biochar carbon released in dilute acidic solution and its effects on maize seed germination.
- Author
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Sun, Jingling, Drosos, Marios, Mazzei, Pierluigi, Savy, Davide, Todisco, Daniele, Vinci, Giovanni, Pan, Genxing, and Piccolo, Alessandro
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BIOCHAR , *BIOMASS , *SEEDS , *CORN , *SOIL amendments - Abstract
It is not yet clear whether the carbon released from biochar in the soil solution stimulates biological activities. Soluble fractions (AQU) from wheat and maize biochars, whose molecular content was thoroughly characterized by FTIR, 13 C and 1 H NMR, and high-resolution ESI-IT-TOF-MS, were separated in dilute acidic solution to simulate soil rhizospheric conditions and their effects evaluated on maize seeds germination activity. Elongation of maize-seeds coleoptile was significantly promoted by maize biochar AQU, whereas it was inhibited by wheat biochar AQU. Both AQU fractions contained relatively small heterocyclic nitrogen compounds, whose structures were accounted by their spectroscopic properties. Point-of-Zero-Charge (PZC) values and van Krevelen plots of identified masses of soluble components suggested that the dissolved carbon from maize biochar behaved as humic-like supramolecular material capable to adhere to seedlings and deliver bioactive molecules. These findings contribute to understand the biostimulation potential of biochars from crop biomasses when applied in agricultural production. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
4. Cooperation among phosphate-solubilizing bacteria, humic acids and arbuscular mycorrhizal fungi induces soil microbiome shifts and enhances plant nutrient uptake
- Author
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Vincenza Cozzolino, Giovanni Vinci, Hiarhi Monda, Vincenzo Di Meo, Kornelia Smalla, Davide Savy, Cozzolino, Vincenza, Hiarhi, Monda, Savy, Davide, Vinci, Giovanni, DI MEO, Vincenzo, and Kornelia, Smalla
- Subjects
0106 biological sciences ,Humic substance ,Plant growth-promoting microorganism ,Bacillus amyloliquefaciens ,Microorganism ,Biological fertility ,Humic substances ,Plant growth-promoting microorganisms ,Arbuscular mycorrhizal fungi ,engineering.material ,01 natural sciences ,Biochemistry ,Nutrient ,Pseudomonas ,biology ,Chemistry ,Compost ,fungi ,Agriculture ,Bacillus amyloliquefacien ,04 agricultural and veterinary sciences ,biology.organism_classification ,Phosphate solubilizing bacteria ,Maize ,Horticulture ,Microbial population biology ,040103 agronomy & agriculture ,engineering ,0401 agriculture, forestry, and fisheries ,Agronomy and Crop Science ,Bacteria ,Temperature gradient gel electrophoresis ,010606 plant biology & botany ,Food Science ,Biotechnology - Abstract
Background Increasing the presence of beneficial soil microorganisms is a promising sustainable alternative to support conventional and organic fertilization and may help to improve crop health and productivity. If the application of single bioeffectors has shown satisfactory results, further improvements may arise by combining multiple beneficial soil microorganisms with natural bioactive molecules. Methods In the present work, we investigated in a pot experiment under greenhouse conditions whether inoculation of two phosphate-solubilizing bacteria, Pseudomonas spp. (B2) and Bacillus amyloliquefaciens (B3), alone or in combination with a humic acids (HA) extracted from green compost and/or a commercial inoculum (M) of arbuscular mycorrhizal fungi (AMF), may affect maize growth and soil microbial community. Phospholipid fatty acid (PLFA) and denaturing gradient gel electrophoresis (DGGE) fingerprinting analysis were performed to detect changes in the microbial community composition. Results Plant growth, N and P uptake, and mycorrhizal root colonization were found to be larger in all inoculated treatments than in the uninoculated control. The greatest P uptake was found when B. amyloliquefaciens was applied in combination with both HA and arbuscular mycorrhizal fungi (B3HAM), and when Pseudomonas was combined with HA (B2HA). The PLFA-based community profile revealed that inoculation changed the microbial community composition. Gram+/Gram− bacteria, AMF/saprotrophic fungi and bacteria/fungi ratios increased in all inoculated treatments. The greatest values for the AMF PLFA marker (C16:1ω5) and AMF/saprotrophic fungi ratio were found for the B3HAM treatment. Permutation test based on DGGE data confirmed a similar trend, with most significant variations in both bacterial and fungal community structures induced by inoculation of B2 or B3 in combination with HA and M, especially in B3HAM. Conclusions The two community-based datasets indicated changes in the soil microbiome of maize induced by inoculation of B2 or B3 alone or when combined with humic acids and mycorrhizal inoculum, leading to positive effects on plant growth and improved nutrient uptake. Our study implies that appropriate and innovative agricultural management, enhancing the potential contribution of beneficial soil microorganisms as AMF, may result in an improved nutrient use efficiency in plants.
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- 2021
5. The molecular properties of biochar carbon released in dilute acidic solution and its effects on maize seed germination
- Author
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Davide Savy, Pierluigi Mazzei, Jingling Sun, Marios Drosos, Genxing Pan, Alessandro Piccolo, Giovanni Vinci, Daniele Todisco, Sun, Jingling, Drosos, Mario, Mazzei, Pierluigi, Savy, Davide, Todisco, Daniele, Vinci, Giovanni, Pan, Genxing, and Piccolo, Alessandro
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Environmental Engineering ,chemistry.chemical_element ,Germination ,010501 environmental sciences ,Zea mays ,01 natural sciences ,Biostimulation ,Soil ,Supramolecular ,Biochar ,Environmental Chemistry ,Point of zero charge ,Waste Management and Disposal ,Organic carbon ,0105 earth and related environmental sciences ,Maize ,Wheat ,Total organic carbon ,Chemistry ,04 agricultural and veterinary sciences ,Pollution ,Nitrogen ,Coleoptile ,Agronomy ,Charcoal ,Environmental chemistry ,Seeds ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Carbon - Abstract
It is not yet clear whether the carbon released from biochar in the soil solution stimulates biological activities. Soluble fractions (AQU) from wheat and maize biochars, whose molecular content was thoroughly characterized by FTIR, (13)C and (1)H NMR, and high-resolution ESI-IT-TOF-MS, were separated in dilute acidic solution to simulate soil rhizospheric conditions and their effects evaluated on maize seeds germination activity. Elongation of maize-seeds coleoptile was significantly promoted by maize biochar AQU, whereas it was inhibited by wheat biochar AQU. Both AQU fractions contained relatively small heterocyclic nitrogen compounds, whose structures were accounted by their spectroscopic properties. Point-of-Zero-Charge (PZC) values and van Krevelen plots of identified masses of soluble components suggested that the dissolved carbon from maize biochar behaved as humic-like supramolecular material capable to adhere to seedlings and deliver bioactive molecules. These findings contribute to understand the biostimulation potential of biochars from crop biomasses when applied in agricultural production.
- Published
- 2017
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