Subtle nudges

Most of us know penicillin as an antibiotic. It is made by the soil dwelling Penicillin rubens fungus. Now this fungus has many brothers and sisters, some of which like to nestle themselves between the cells of roots. For the plant this is positive as colonized plants grow more roots. Now a new study by Spanish a Czech researchers shows that Penicillin melinii enhances root growth with subtle…