Towards Better Understanding of the Interactions and Efficient Application of Plant Beneficial Prebiotics, Probiotics, Postbiotics and Synbiotics

Flor-Peregrín, Elena; Malusà, Eligio; Vassilev, Nikolay

doi:10.3389/fpls.2020.01068

Cited by 41 publications

(43 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, K solubilization in the soil could produce additional benefits for plants due to other microbial mechanisms of plant-growth promotion, such as the production of phytohormones, phosphate solubilization, and stress relief (Araújo et al, 2020;Batista et al, 2018;Gupta and Pandey, 2019;Lubna et al, 2018;Zhang and Kong, 2014). Nevertheless, this strategy requires the development of formulations to allow efficient colonization and activity of the inoculated microorganism in the highly competitive soil environment (Herrmann and Lesueur, 2013;Malusá et al, 2012;Vassileva et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Potassium extraction from the silicate rock Verdete using organic acids

Duarte

Xavier

Rossati

et al. 2022

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Although Brazil is one of the world's leading exporter of agricultural products, the country is highly dependent on the importation of potassic fertilizers. K-bearing silicate rocks are reported as potential solutions to reduce external K dependency. This work evaluated K extraction from silicate Verdete rock, a glauconite-bearing rock containing 10 % of K 2 O, by solubilization with organic acids. Firstly, Verdete rock was reacted during 3-120 h with solutions of citric or oxalic acid at 2 % (m/v) in Erlenmeyer flasks by shaking. Oxalic acid extracted 6.5 % of K in Verdete, while citric acid extracted 2.3 %. Another experiment was performed to evaluate the effect of various oxalic acid concentrations (2, 4, 6, 8, and 10 %) and differing reaction times (12, 24, 48, and 72 h) on K extraction from Verdete rock. Soluble K concentration nearly doubled with the increase of reaction time from 12 to 72 h, rising from 20 to 37 mg L -1 . Increments in K extraction were obtained by increasing oxalic acid concentrations up to 6 % and above this concentration, no significant gain was observed. The X-ray diffraction data showed that K extraction resulted from the formation of oxalate-metal complexes with metals in Verdete rock.

show abstract

Section: Resultsmentioning

confidence: 99%

Potassium extraction from the silicate rock Verdete using organic acids

Duarte

Xavier

Rossati

et al. 2022

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

show abstract

“…The overall biotechnological process depends on the type/form of the final formulated inoculant product. At the end of the fermentation process, microbial biomass and/or spores can further be used to formulate a solid commercial product based on solid carriers [10]. Alternatively, liquid formulations of plant beneficial microorganisms can be formed by the addition of substances directly to the fermentation cells-bearing broth to ensure long storage life of the commercial products maintaining high cell numbers/mL and metabolic activity enhancement [21].…”

Section: Single Batch Operationsmentioning

confidence: 99%

“…Microorganisms with industrial/commercial interest, which demonstrate plant beneficial properties, are mainly bacteria (Bacillus, Pseudomonas, Rhizobium, and Azotobacter, among others) and fungi (Aspergillus, Penicillium, Trichoderma, Beauveria, Metarhizium, Clonostachys, and mycorrhizal fungi) [4][5][6]. Generally, these microorganisms are involved in the decomposition of the soils' organic matter, nutrient cycling and management of soil minerals, solubilization of insoluble nutrients, such as phosphate-or potassium-bearing materials, releasing of plant stimulating metabolites, such as phyto-hormones, and the suppression of plant pathogens [7][8][9][10]. It should be noted that many of these manifest more than one of the above activities, as they possess multifunctional properties [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Biotechnology offers a wide array of techniques leading to bioformulates: starting from selection of promising microbial strains, characterizing their morphological, physiological and biochemical properties, testing their activity under fermentation and soil conditions and, finally, formulating them into commercial products [15][16][17][18]. Scientific literature is abundant with studies on bioinoculants mainly oriented towards isolation and screening of beneficial microorganisms, but studies on fermentation processes and formulation techniques are still lacking [10,19]. Results of a recent analysis in the field of plant beneficial microorganisms suggest a more integrated view of soil inoculants, with a special emphasis on the inoculant production process, including fermentation and formulation processes, and additives [19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fermentation Strategies to Improve Soil Bio-Inoculant Production and Quality

et al. 2021

Self Cite

View full text Add to dashboard Cite

The application of plant beneficial microorganisms has been widely accepted as an efficient alternative to chemical fertilizers and pesticides. Isolation and selection of efficient microorganisms, their characterization and testing in soil-plant systems are well studied. However, the production stage and formulation of the final products are not in the focus of the research, which affects the achievement of stable and consistent results in the field. Recent analysis of the field of plant beneficial microorganisms suggests a more integrated view on soil inoculants with a special emphasis on the inoculant production process, including fermentation, formulation, processes, and additives. This mini-review describes the different groups of fermentation processes and their characteristics, bearing in mind different factors, both nutritional and operational, which affect the biomass/spores yield and microbial metabolite activity. The characteristics of the final products of fermentation process optimization strategies determine further steps of development of the microbial inoculants. Submerged liquid and solid-state fermentation processes, fed-batch operations, immobilized cell systems, and production of arbuscular mycorrhiza are presented and their advantages and disadvantages are discussed. Recommendations for further development of the fermentation strategies for biofertilizer production are also considered.

show abstract

“…Nevertheless, we believe that the research activity that is currently endeavored to better understand the biochemical and molecular mechanisms involved in plant–microbe–soil interactions, paralleled with their impact on the plant metabolomics and the interactions with endophytes, should also support the progress in manufacturing and the regulatory development, leading to the design and use of safe bioproducts with greater efficacy in enhancing the productivity of sustainable crops. To this aim, exploitation of endophytes ( Fadiji and Babalola, 2020 ), or of pre-, pro-, and post-biotic approaches ( Vassileva et al, 2020 ) as well as of the plants’ capacity to “Cry for Help,” i.e., recruit and subsequent assembly of protective specific microbiota ( Bakker et al, 2018 ; Rodriguez and Durán, 2020 ), could represent possible research avenues to be explored.…”

Section: Regulatory Future Perspectives Of Multifunctional Bioproductmentioning

confidence: 99%

Field Exploitation of Multiple Functions of Beneficial Microorganisms for Plant Nutrition and Protection: Real Possibility or Just a Hope?

et al. 2020

Self Cite

View full text Add to dashboard Cite

Bioproducts, i.e., microbial based pesticides or fertilizers (biopesticides and biofertilizers), should be expected to play an ever-increasing role and application in agricultural practices worldwide in the effort to implement policies concerned with sustainable agriculture. However, several microbial strains have proven the capacity to augment plant productivity by enhancing crop nutrition and functioning as biopesticides, or vice-versa. This multifunctionality is an issue that is still not included as a concept and possibility in any legal provision regarding the placing on the market of bioproducts, and indicates difficulties in clearly classifying the purpose of their suitability. In this review, we overview the current understanding of the mechanisms in plant-microbe interactions underlining the dual function of microbial strains toward plant nutrition and protection. The prospects of market development for multifunctional bioproducts are then considered in view of the current regulatory approach in the European Union, in an effort that wants to stimulate a wider adoption of the new knowledge on the role played by microorganisms in crop production.

show abstract

Towards Better Understanding of the Interactions and Efficient Application of Plant Beneficial Prebiotics, Probiotics, Postbiotics and Synbiotics

Cited by 41 publications

References 44 publications

Potassium extraction from the silicate rock Verdete using organic acids

Potassium extraction from the silicate rock Verdete using organic acids

Fermentation Strategies to Improve Soil Bio-Inoculant Production and Quality

Field Exploitation of Multiple Functions of Beneficial Microorganisms for Plant Nutrition and Protection: Real Possibility or Just a Hope?

Contact Info

Product

Resources

About