Fermented Biofertilizer Production and Application

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Industrial Fermentation".

Deadline for manuscript submissions: 20 August 2026 | Viewed by 742

Special Issue Editor


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Guest Editor
Institut Méditerranéen de Biodiversité et d’Ecologie Marine et Continentale, UMR 7263 (CNRS, AMU, IRD, AU), Avenue Escadrille Normandie Niemen, 13397 Marseille, France
Interests: biofertilizers; fermented forest litters; microbial communities; organic matter composition

Special Issue Information

Dear Colleagues,

The excessive use of chemicals in intensive agriculture has had a negative impact on soil diversity and fertility. A strategy for developing sustainable agriculture may be predicated on the use of microbial-based fertilizers, plant stimulators and related microbial applications.

This Special Issue aims to highlight advances in bioprocess engineering and fermentation technology in order to produce bio-inputs to restore soil fertility and soil structure and clean up polluted agricultural soils damaged by intensive conventional practices, considering nature-based solutions and a circular economy. Special attention will be given to the following topics:

(i) Innovative fermentation processes;

(ii) Alternative substrates that could be used;

(iii) The eventual pre-treatment of raw materials (pre-heating, grinding, mixing, etc.);

(iv) Microbiological aspects;

(v) Specific applications for developing countries.

Dr. Pierre Christen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fermentation is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fermentation
  • nature-based solutions
  • biofertilizer
  • circular economy
  • agricultural by-products
  • microorganisms

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Published Papers (1 paper)

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Research

16 pages, 1908 KB  
Article
Isolation, Characterization, and Genomic Elucidation of HRY1: An Unconventional but Highly Efficient Phosphate-Solubilizing Escherichia coli
by Ruiyan He, Sa Zhang and Yuanwang Liu
Fermentation 2026, 12(2), 113; https://doi.org/10.3390/fermentation12020113 - 15 Feb 2026
Viewed by 591
Abstract
Phosphate-solubilizing bacteria (PSB) are pivotal in the cycling of phosphorus within terrestrial ecosystems and hold great promise for sustainable agriculture. In this study, we report the isolation of HRY1—a highly efficient phosphate-solubilizing strain—identified as Escherichia coli, a bacterium not traditionally recognized for [...] Read more.
Phosphate-solubilizing bacteria (PSB) are pivotal in the cycling of phosphorus within terrestrial ecosystems and hold great promise for sustainable agriculture. In this study, we report the isolation of HRY1—a highly efficient phosphate-solubilizing strain—identified as Escherichia coli, a bacterium not traditionally recognized for plant-beneficial traits. Under optimized conditions (glucose as carbon source, (NH4)2SO4 as nitrogen source, pH 7.0, 1% inoculum, and 5 g/L Ca3(PO4)2), HRY1 consistently solubilized ~16% of inorganic phosphorus, with peak activity coinciding with its stationary growth phase (14 h). Whole-genome sequencing revealed a comprehensive genetic toolkit for phosphorus mobilization, including eight genes implicated in organic acid-mediated mineral dissolution, five high-affinity phosphate transporter genes (pit and pst gene cluster), and three two-component regulatory systems responsive to phosphate starvation (e.g., phoBR). The functional integration of these systems suggests a multifaceted strategy combining acidification, active uptake, and adaptive regulation to thrive under phosphorus limitation. Our findings redefine the ecological scope of E. coli and uncover an unconventional yet potent PSB candidate with significant potential for biofertilizer development and soil phosphorus activation. This discovery reveals E. coli’s untapped potential for phosphorus solubilization, with HRY1’s novelty residing in its high efficiency under optimized conditions and its practical promise as a biofertilizer. Full article
(This article belongs to the Special Issue Fermented Biofertilizer Production and Application)
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