Fungal Enzymes Hijack Plant Immune Systems, Paving the Way for Innovative Medical and Agricultural Solutions

**Researchers from the University of Cologne's CEPLAS Cluster of Excellence** have uncovered how two fungal enzymes facilitate the colonization of plant roots by manipulating the plant's immune system. The study focused on the beneficial root fungus *Serendipita indica* and its interaction with the model plant *Arabidopsis thaliana*. Initially, the fungus enters living root cells and triggers controlled cell death in the host plant with minimal damage. **The study identified two specific enzymes, NucA and E5NT,** that produce the molecule deoxyadenosine (dAdo). This molecule, released in the extracellular apoplast space, penetrates plant cells via the membrane transporter ENT3, inducing cell death. This mechanism mirrors processes in human patients where *Staphylococcus aureus* interacts with immune cells. **The conserved nature of this microbial mechanism** across different organisms suggests a universal strategy for successful colonization, presenting opportunities for innovative interventions in both agriculture and medicine. By understanding these processes, **researchers aim to devise effective strategies** to manage microbial interactions affecting plant health and crop production, as well as human health.