Root or Shoot (IMAGE)

Salk Institute

Root or Shoot — Caption

During plant embryogenesis microRNAs, labeled green, play an important part in the tightly orchestrated choreography that determines what goes up and what goes down. They ensure that HD-ZIP III genes are only expressed in the shoot meristem, which gives rise to all the above-ground portions of a plant.

Credit

Image: Courtesy of Zachary R. Smith, Salk Institute for Biological Studies

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