How to create an automatic "depended on by" column in a gantt?

I’m trying to create a “depended on by” column in a gantt that will automatically pull all of the tasks (text field) for which a given task is listed as a dependency (linked field). For example, if task 1 is listed as a dependency for 5 other tasks, I’d like this new field to automatically list those 5 tasks.

Does anyone know if this is possible/how to set this up?