As a part of the lecture series “Friday lectures at 15h” organized by the Institute for Adriatic crops, dr. sc. Tomislav Radić held a presentation of the project “Arbuscular mycorrhiza potential to modify grapevine defense against viruses” funded by the Croatian Science Foundation. Dr. Radić clarified to his audience the term “arbuscular mycorrhiza”, familiarized them with the setup of the experiment, pointed out the importance of this topic on a global and regional scale, and gave answers to many interesting questions that emerged through discussion.