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Accueil > Animation Scientifique > Séminaire d’Alexandre Jousset (Université d’Utrecht Pays Bas, invité équipe 3)

Séminaire d’Alexandre Jousset (Université d’Utrecht Pays Bas, invité équipe 3)

Séminaire d’Alexandre Jousset (Université d’Utrecht Pays Bas,invité équipe 3 ) intitulé « Soil protozoa : the overseen but powerful regulators of soil fertility and plant health »

Plant growth and health depends to a large extent on the interaction with soil bacterial communities. Many root-associated microbiota improve plant growth by mineralizing nutrients, producing growth hormones or inhibiting pathogens. Research has traditionally focused on bacteria and fungi as beneficial organisms. However, soil contain several other organisms that may drive soil fertility and plant growth. Here I will present protozoa as a group of organisms that bear a great potential as enhancer of the functionality of microbiome function and subsequently plant growth. Protozoa heavily feeding on soil microbes and have a considerable impact on community structure and composition. This property can be used to shape the rhizosphere microbiome to enhance plant health. Protozoa increase nutrient turnover and confer a competitive advantage to several plant-beneficial bacteria. Further, presence of protozoa can enhance the expression of traits linked to plant health, such as biocontrol secondary metabolites. I will here present an overview of the history of research on protozoa in the rhizosphere and the main mechanisms linking predation to plant-beneficial traits. I will then present recent examples on how protozoa can be used as an efficient biotechnological application to support plant growth and reduce diseases.

Voir en ligne : http://www.uu.nl/staff/ALCJousset/0