This Tree Oozes Metal Sap

The video explores Pycnandra acuminata, a tree with unique teal sap due to high nickel content. It thrives in ultramafic soils, which are rich in nickel but typically toxic to plants. This tree is a metal hyperaccumulator, absorbing large amounts of nickel without harm. Scientists are investigating why such plants evolved to store metal, with theories suggesting defense against predators or allelopathy. These plants could help remove metal pollutants from soils, offering environmental benefits on Earth and potentially on Mars. However, the tree is rare and needs protection for further study.

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