Biologists Find Stem-Cell-Like Functions In Ordinary Cells
mattrandy123 writes with news that scientists from NYU and Utrecht University have discovered ordinary plant cells can fulfill some of the same regenerative functions previously attributed to stem cells. Quoting: “In the study, the researchers cut off the plant’s root tip, thereby excising the stem cell niche, and examined the return of cell identities by measuring all gene activity. The results suggested that stem cells returned quite late in regeneration after other cells were already replaced. The researchers then used mutant plants in which the stem cell niche no longer functions to confirm their initial observations. Despite the absence of the stem cell niche, the plant’s ordinary cells worked to regenerate all the major tissues constituting the root tip — a process that began hours after it had been removed. However, researchers found that plants without functional stem cell niches could not resume normal growth, showing that other cells did not replace all functions of stem cells.”
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