Warts / fungus / yellow leaf
I've had this Dracaena sanderiana for about 8 years. I didn't really know how to treat it, I just gave it water from time to time.
Recently I noticed the "curl" in the plant began turning brown. I took out the plant and found some very bad smelling slime around the roots. I rinsed it off, cleaned the stones that were in the vase, put fresh water in the vase, and waited for a couple of weeks.
The curl (stem) was getting browner and browner and couldn't bear the weight anymore.
I cut off the branches it had and put them separately in a small vase. None of them have developed roots until now (two weeks now?).
Now things seem to be getting worse. At this moment I see three problems:
1. Small warts on the stem. See attached picture.
2. Fine threads on the stem (fungus?)
3. Some leafs are turning brown.
What are those warts? What about these threads? Can I still save this plant? How?
More pictures will follow.