Tiny molecules preserve stem cells: Researchers shows what makes constant plant growth possible

Human life is dependent on the constant growth of plants, and it is the job of stem cells to see to it that this occurs. They are found at the tips of the shoots and roots, the so-called meristems. Stem cells can transform themselves into other types of cells and develop new organs, such as leaves, fruits, and twigs, throughout the entire lifespan of the plant. However, in order for the plant to continue growing and developing organs, several cells at the tips of the shoots and roots have to remain stem cells. In order to ensure that this is the case, the cells need signals to help them identify their position in the plant and trigger the appropriate developmental program.

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