By Susan Milius, 13:34 PM October 30, 2013

A newly discovered structure where mouth-puckering compounds called tannins form inside plant cells. Plants from oak trees to corn make tannins, which discourage nibbling insects and reduce damage from UV light. Tannosomes are tiny organelles that arise in chloroplasts, structures that capture light energy. There, sacs of green pigment break into little spheres.

The chloroplast membrane creates a pocket around clusters of these spheres, and the pocket eventually breaks loose and shuttles to th...

Source URL: https://www.sciencenews.org/article/tannosome?mode=magazine&context=187368