This question will probably reveal my ignorance in plant physiology,
but, I was curious what general types of compounds do plants secrete
from their roots. I ask this because I saw some plants (eg lettuce,
carrots, etc) growing in sterile medium the other day. The medium
became increasingly more turbid and brown as the culture grew. Is
this protein, alkaloids or some other secondary metabolite. Any
help would be appreciated.
skorycd at ncaur1.ncaur.gov