Plants regulate their growth and development using hormones, including a group called strigolactones that prevent excessive budding and branching. For the first time, scientists led by UC Riverside have synthesized strigolactones from microbes. The work is published in the open-access journal, Science Advances.
source https://phys.org/news/2021-09-yeast-bacteria-biosynthesize-hormones-weed.html