Just recently, the "horizontal natural product transfer" was unveiled: alkaloids, which have been leached out from decomposing alkaloidal donor plants, are taken up by the roots of acceptor plants. In the same manner, many other natural products, such as coumarins or stilbenes, are also taken up from the soil. Recent research outlined that alkaloids are transferred also from a living donor plant to plants growing in their vicinity. In the acceptor plants, the imported natural products might be modified by hydroxylation and glucosylation. These insights will strongly impact our understanding of contamination of plantderived commodities as well as plant−plant interactions.
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