0000000001056157
AUTHOR
Raphaël Boussageon
Services provided by soil microorganisms to improve plant phosphate nutrition
Since the first Green Revolution, agricultural practices have been based on the massive use of synthetic fertilisers and plant protection products. Since then, global consumption of phosphate fertilisers has more than tripled, reaching 47 million tonnes in 2019. Current projections estimate that phosphate rock stocks (natural phosphorus resources for fertiliser production) could be depleted within the next century, leading us to change our agricultural practices. In soils, P is mainly present in complexed forms that are not easily accessible to plants. To reduce the use of phosphate fertilisers, it is necessary to make this complexed phosphate accessible to plants. This can be done by benef…
Le coup de crayon qui nous rend tous un peu scientifiques. Article sur la bande déssinée "Voyage au centre de la Pomme de terre"
National audience
Bacillus consortium positively impacts arbuscular mycorrhizal fungi community, plant phosphate nutrition and potato yield in Solanum tuberosum cv. Jazzy
Many agricultural soils are naturally poor in plant available phosphorus (P), although total P stocks can exceed plant requirements by more than 100-fold. The reason for such apparent contradiction is that P is complexed under organic and inorganic forms, but only free inorganic orthophosphate (Pi) ions are available to plants and soil organisms. The high immobility of Pi in soil, the low soil solution circulation associated with a rapid root absorption lead to the development of a depletion zone around the roots. As a consequence, P is frequently a limiting factor for plant growth and development.Arbuscular mycorrhizal (AM) fungi are estimated to colonize the vast majority of crop plants a…
Impact of double symbiosis (arbuscular mycorrhiza and nodulation) on nitrogen uptake in the Papilionoideae subfamily
The study of plant-microbe associations through nutrient exchanges has significantly improved our understanding of plant microbiome. Leguminous plants establish mutualistic associations with both rhizobial bacteria and arbuscular mycorrhizal fungi. These symbioses improve mineral plant nutrition and increase plant resistance against biotic and abiotic stresses. Plant-microbe associations provide key features for the current agricultural and environmental challenges.In Poaceae plant, inductions of specific ammonium transporters (AMT) genes and nitrogen/peptide transporters (NRF) genes have already been described during arbuscular mycorrhiza symbiosis. Similarly, in Papilionoideae, AMT and NR…