https://experts.arizona.edu/en/publications/how-roots-control-the-flux-of-carbon-to-the-rhizosphere/
How roots control the flux of carbon to the rhizosphere - University of Arizona
roots controlflux
https://www.mpg.de/26064803/signals-from-the-roots-control-pollen-development?c=12642841
Signals from the roots control pollen development | Max-Planck-Gesellschaft
Researchers discover that small RNAs from maternal tissue act as mobile messengers and influence pollen maturation over long distances.
from the rootsmax plancksignalscontrolpollen