A substance that is produced by a different organism and triggers a reaction in another organism.
From Greek 'allo-' (other) + 'thigene' (produced by/from 'thigeneia'). The word combines the concept of 'other' with 'generated from,' describing molecules that originate from one organism but affect another. It's used in ecology and biochemistry to describe cross-organism chemical interactions.
Allothigenes are basically nature's chemical messages between strangers—like when a flower produces a scent that attracts a bee from another species, or when one plant releases chemicals to warn other plants about insect attacks. It's the chemical language of entire ecosystems!
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