15-month Postdoctoral Position – Microbial Ecology & Mycorrhizal Symbioses

Context
Arbuscular mycorrhizal fungi (G-AMF, Glomeromycotina) are well known for improving plant nutrition and resilience, yet their practical use in agriculture remains limited. Recent taxonomic reassessments have revealed that another group of fungi—Mucoromycotina forming arbuscule-like structures (M-FRE)—also colonize the roots of cultivated plants. Still largely understudied, these symbionts may surpass G-AMF in abundance and potentially in functional importance, particularly in agricultural systems. We aim to establish the foundations of this emerging research field by addressing three major needs: (1) understanding the environmental factors influencing the coexistence and complementarity of G-AMF and M-FRE; (2) validating the molecular identity of root-colonizing structures observed via histology; and (3) taking on a high-risk, high-reward challenge: isolating new Mucoromycotina strains forming arbuscule-like structures on angiosperms.
We (Dirk Redecker and Elisa Taschen) have been fascinated by M-FRE for several years and have gathered promising preliminary data that we now wish to explore further. If this project sparks your interest, don’t hesitate to reach out! The position is based primarily at Montpellier (UMR Eco&Sols – a joint research unit of INRAE, IRD and Cirad), with several short research stays planned in Dijon (UMR Agroecology).
Postdoc Objectives:
• Investigate the functional interactions between M-FRE and G-AMF under controlled conditions
• Validate molecular and microscopic identification using in situ PCR
• Isolate new M-FRE strains and assess their symbiotic potential
All experiments will be conducted with technical support from both teams and a 6-month MSc intern.
Required Skills:
• PhD in microbial ecology, plant biology, or mycology
• Experience in microbiology (bonus: experience in in vitro culture of G-AMF)
• Familiarity with controlled condition experiments (rhizotrons, pots, etc.)
• Proficiency in molecular biology techniques
• Knowledge of root symbioses or soil microbiomes is a plus
• Ability to work collaboratively across disciplines and between two locations (Montpellier & Dijon)
• Scientific rigor, autonomy, and good writing skills in English
🔬 Employer: INRAE (French National Research Institute for Agriculture, Food and Environment)
📍 Location: UMR Eco&Sols (Montpellier) + research stays at UMR Agroecology (Dijon)
📅 Duration: 15 months – Preferred start date: November 2025
📩 To apply: Please send your CV and a motivation letter to elisa.taschen@inrae.fr and dirk.redecker@inrae.fr
Application deadline : 21 September 2025