Facebook post by University of Helsinki

Trees, potatoes, carrots... This study ends the near 150-year-old debate on the location and essence of the stem cells responsible for radial growth. Botany textbooks around the world will need to update their descriptions of how the two types of vascular tissues in plants form, differentiate and grow. Researchers identified key regulatory networks controlling how plants grow ‘outwards’. This could help us to grow trees to be more efficient carbon sinks and increase vegetable crop yields.
Researchers unlock the secrets of plants' radial growth helsinki.fi

A 150-year-old debate over plant growth has officially ended.