Sphingomonas sediminicola Is an Endosymbiotic Bacterium Able to Induce the Formation of Root Nodules in Pea ( Pisum sativum L.) and to Enhance Plant Biomass Production

The application of bacterial bio-inputs is a very attractive alternative to the use of mineral fertilisers. In ploughed soils including a crop rotation pea, we observed an enrichment of bacterial communities with ( .) . Inoculation experiments, cytological studies, and sequencing were used to invest...

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Published in:Microorganisms (Basel) 2023-01, Vol.11 (1), p.199
Main Authors: Mazoyon, Candice, Hirel, Bertrand, Pecourt, Audrey, Catterou, Manuella, Gutierrez, Laurent, Sarazin, Vivien, Dubois, Fréderic, Duclercq, Jérôme
Format: Article
Language:English
Subjects:
Agricultural practices
Agricultural production
Agriculture
Bacteria
Bacteroids
Biodiversity
Biomass
Cell differentiation
Crop rotation
Experiments
Fertilization
Fertilizers
Genomes
Inoculation
Legumes
Life Sciences
Mineral fertilizers
Nitrogenase
nodulation
Nodules
Peas
PGRP
Phylogeny
Pisum sativum
Plant biomass
Plant growth
Plant resistance
rhizobacteria
Root nodules
Seeds
Sphingomonas
Sphingomonas sediminicola
Sustainable agriculture
Sustainable development
Sustainable practices
Vegetal Biology
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Summary:The application of bacterial bio-inputs is a very attractive alternative to the use of mineral fertilisers. In ploughed soils including a crop rotation pea, we observed an enrichment of bacterial communities with ( .) . Inoculation experiments, cytological studies, and sequencing were used to investigate the beneficial role of in pea. is able to colonise pea plants and establish a symbiotic association that promotes plant biomass production. Sequencing of the genome revealed the existence of genes involved in secretion systems, Nod factor synthesis, and nitrogenase activity. Light and electron microscopic observations allowed us to refine the different steps involved in the establishment of the symbiotic association, including the formation of infection threads, the entry of the bacteria into the root cells, and the development of differentiated bacteroids in root nodules. These results, together with phylogenetic analysis, demonstrated that is a non-rhizobia that has the potential to develop a beneficial symbiotic association with a legume. Such a symbiotic association could be a promising alternative for the development of more sustainable agricultural practices, especially under reduced N fertilisation conditions.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms11010199