The importance of the mycorrhizal symbiosis to plant growth has led to a large body of research into their formation and function, yet there are critical unanswered questions. Howard Berg, director of the Imaging and Microscopy Facility at the Donald Danforth Plant Science Center and his collaborators have discovered a previously unknown compartment within these symbiotic cortical root cells that could be important for nutrient exchange and molecular communication between the symbiotic partners.
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