Plant Beneficial Microorganisms as Novel Additives for Sustainable Agriculture

A special issue of Antibiotics (ISSN 2079-6382).

Deadline for manuscript submissions: closed (15 May 2022) | Viewed by 3041

Special Issue Editor

Department of Microbiology, Institute of Integrative Biology of the Cell (I2BC), UMR 9198 CNRS, University Paris Saclay, 91190 Gif sur Yvette, France
Interests: Regulation of antibiotic biosynthesis; energetic metabolism; function of antibiotics for the producing bacteria; Streptomyces
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Special Issue Information

Dear Colleagues,

Microorganisms have long been known to be major contributors of soil fertility and plant nutrition as organic matter decomposers. However, in recent decades, several studies have revealed that they also greatly contribute to plant health and fitness via leur their ability to produce molecules limiting the growth of phytopathogens belonging to various kingdoms (bacteria, fungi, insects, worms...), as well as phytohormones. They can even contribute to rescuing agricultural soils sterilized by repeated applications of pesticides or of chemical phosphorus amendements often rich in heavy metals thanks to their ability to degrade xenobiotics, to solubilize immobilized phosphate and to store minerals. These interesting properties raise the question of the opportunity, efficiency and safety of the development of novel agricultural pratices and the novel bio-based economy based on the large-scale cultivation of these beneficial micro-organisms for their spreading in agrictural fields as a new kind of intrans.

Dr. Marie-Joëlle Virolle
Guest Editor

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Keywords

  • bio-control
  • bio-fertilizer
  • PGPR
  • phosphorus solubilization
  • heavy metal
  • xenobiotic degradation
  • antibiotics
  • phytopathogen
  • parasites
  • endosymbiotes

Published Papers (1 paper)

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Research

9 pages, 1009 KiB  
Article
A Molecule of the Viridomycin Family Originating from a Streptomyces griseus-Related Strain Has the Ability to Solubilize Rock Phosphate and to Inhibit Microbial Growth
by Hanane Hamdali, Ahmed Lebrihi, Marie Carmen Monje, Ahmed Benharref, Mohamed Hafidi, Yedir Ouhdouch and Marie Joëlle Virolle
Antibiotics 2021, 10(1), 72; https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10010072 - 14 Jan 2021
Cited by 7 | Viewed by 2334
Abstract
Some soil-borne microorganisms are known to have the ability to solubilize insoluble rock phosphate and this process often involves the excretion of organic acids. In this issue, we describe the characterization of a novel solubilizing mechanism used by a Streptomyces strain related to [...] Read more.
Some soil-borne microorganisms are known to have the ability to solubilize insoluble rock phosphate and this process often involves the excretion of organic acids. In this issue, we describe the characterization of a novel solubilizing mechanism used by a Streptomyces strain related to Streptomyces griseus isolated from Moroccan phosphate mines. This process involves the excretion of a compound belonging to the viridomycin family that was shown to play a major role in the rock phosphate bio weathering process. We propose that the chelation of the positively charged counter ions of phosphate constitutive of rock phosphate by this molecule leads to the destabilization of the structure of rock phosphate. This would result in the solubilization of the negatively charged phosphates, making them available for plant nutrition. Furthermore, this compound was shown to inhibit growth of fungi and Gram positive bacteria, and this antibiotic activity might be due to its strong ability to chelate iron, a metallic ion indispensable for microbial growth. Considering its interesting properties, this metabolite or strains producing it could contribute to the development of sustainable agriculture acting as a novel type of slow release bio-phosphate fertilizer that has also the interesting ability to limit the growth of some common plant pathogens. Full article
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