Compost biofortification with diazotrophic and P‐solubilizing bacteria improves maturation process and P availability

Busato, Jader Galba; Zandonadi, Daniel Basílio; Mól, Alan Ribeiro; Souza, Rafaela; Aguiar, Kamilla Pereira; Júnior, Fábio B Reis; Olivares, Fábio Lopes

doi:10.1002/jsfa.7819

Cited by 14 publications

(12 citation statements)

References 36 publications

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“…From a biotechnological perspective, microbial survival and activity in the absence of a host plant represent an ecological advantage that can be used as a strategy to enrich substrates with nutrients, boosting plant growth and development (i.e. plant substrate biofortification) [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Genome sequencing and assessment of plant growth-promoting properties of a Serratia marcescens strain isolated from vermicompost

et al. 2018

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BackgroundPlant-bacteria associations have been extensively studied for their potential in increasing crop productivity in a sustainable manner. Serratia marcescens is a species of Enterobacteriaceae found in a wide range of environments, including soil.ResultsHere we describe the genome sequencing and assessment of plant growth-promoting abilities of S. marcescens UENF-22GI, a strain isolated from mature cattle manure vermicompost. In vitro, S. marcescens UENF-22GI is able to solubilize P and Zn, to produce indole compounds (likely IAA), to colonize hyphae and counter the growth of two phytopathogenic fungi. Inoculation of maize with this strain remarkably increased seedling growth and biomass under greenhouse conditions. The S. marcescens UENF-22GI genome has 5 Mb, assembled in 17 scaffolds comprising 4662 genes (4528 are protein-coding). No plasmids were identified. S. marcescens UENF-22GI is phylogenetically placed within a clade comprised almost exclusively of non-clinical strains. We identified genes and operons that are likely responsible for the interesting plant-growth promoting features that were experimentally described. The S. marcescens UENF-22GI genome harbors a horizontally-transferred genomic island involved in antibiotic production, antibiotic resistance, and anti-phage defense via a novel ADP-ribosyltransferase-like protein and possible modification of DNA by a deazapurine base, which likely contributes to its competitiveness against other bacteria.ConclusionsCollectively, our results suggest that S. marcescens UENF-22GI is a strong candidate to be used in the enrichment of substrates for plant growth promotion or as part of bioinoculants for agriculture.Electronic supplementary materialThe online version of this article (10.1186/s12864-018-5130-y) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Genome sequencing and assessment of plant growth-promoting properties of a Serratia marcescens strain isolated from vermicompost

et al. 2018

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“…Increases in the HA content and decreases in FA with the evolution of vermicomposting were also showed by Busato et al . (2012, 2017) and Zhao et al . (2017) and, according to Ko et al .…”

Section: Discussionmentioning

confidence: 95%

“…Vermicomposting is a variation of the composting in which earthworms are added aiming to accelerate the degradation and enrich the final product (Busato et al . 2012, 2017). Both are ecological solutions to transform part of the organic residues generated by the contemporary society in a high agricultural value product, recycling organic matter and plant nutrients.…”

Section: Introductionmentioning

confidence: 99%

“…2017) and increase the content of nitrogen in the final product (Busato et al . 2012, 2017; Alikhani et al . 2017).…”

Section: Introductionmentioning

confidence: 99%

“…In a line with emerging possibilities, MIT has been also tested to increase the solubilization of hard rock phosphate (RP) (Busato et al . 2012, 2017; Wei et al . 2018).…”

Section: Introductionmentioning

confidence: 99%

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Trichodermastrains accelerate maturation and increase available phosphorus during vermicomposting enriched with rock phosphate

et al. 2020

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Aims To suggest microbial inoculation as a tool to shorten organic residues stabilization and increase rock phosphate (RP) solubilization through vermicomposting, thus increasing nutrient content in plants and making it more appealing to farmers. Two Trichoderma strains were inoculated alone or combined in a RP apatite‐enriched vermicompost. Stability and plant‐available phosphorus levels were monitored for 120 days. Methods and Results Observable higher total organic carbon reduction in the treatment with the combined Trichoderma strains, followed by the inoculation with T. asperellum and T. virens. Combined Trichoderma and inoculation with T. virens increased humic acids (HA) content in 38·2 and 25·0%, respectively; non‐inoculated vermicompost with T. asperellum increased it by 15·0%. The combined Trichoderma strains and T. virens achieved the stability index based on the humic/fulvic acids (HA/FA) ratio after 120 days. T. asperellum, combined Trichoderma and T. virens increased the citric acid soluble‐P content in 83·2, 62·2 and 49·5%, respectively, compared to the non‐inoculated vermicompost. Conclusions Inoculation with combined T. asperellum and T. virens efficiently accelerated vermicompost stabilization; T. asperellum increased the citric acid soluble‐P in the final product. Significance and Impact of the Study Combined Trichoderma inoculation and RP enrichment improves the vermicompost quality, increasing HA and citric acid soluble‐P, recycling organic waste nutrients and reducing agricultural dependence on phosphate fertilizers.

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Rock Phosphate Vermicompost with Microbial Inoculation Potential in Organic Soil Fertility

Ajibade

Mupambwa

Simon

et al. 2023

Vermicomposting for Sustainable Food Systems in Africa

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Compost biofortification with diazotrophic and P‐solubilizing bacteria improves maturation process and P availability

Abstract: Burkholderia silvatlantica and H. seropedicae in RP-enriched compost may represent an important biotechnological tool to reduce the overall time required for composting and increase the supply of P from poorly soluble sources. © 2016 Society of Chemical Industry.

Cited by 14 publications

References 36 publications

Genome sequencing and assessment of plant growth-promoting properties of a Serratia marcescens strain isolated from vermicompost

Genome sequencing and assessment of plant growth-promoting properties of a Serratia marcescens strain isolated from vermicompost

Trichodermastrains accelerate maturation and increase available phosphorus during vermicomposting enriched with rock phosphate

Rock Phosphate Vermicompost with Microbial Inoculation Potential in Organic Soil Fertility

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