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Related Experiment Video

Updated: Apr 30, 2026

Poplar Adventitious Roots Induced by Stem Canker Pathogens: An Experimental System for Studying Roots Biology and Light Response-Related Processes
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Kin recognition by roots occurs in cycads and probably in conifers.

Root Gorelick, Thomas E Marler

    Communicative & Integrative Biology
    |April 30, 2014
    PubMed
    Summary

    Plant roots can recognize their relatives. This study confirms kin recognition in Cycas edentata, the first non-flowering plant found to exhibit this trait, suggesting it is an ancient plant behavior.

    Keywords:
    CycadaceaeCycadalesaltruismancient traitskin recognition

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    Area of Science:

    • Plant Biology
    • Evolutionary Biology
    • Ecology

    Background:

    • Kin recognition is a crucial factor in plant competition and cooperation.
    • Previous studies have primarily focused on angiosperms (flowering plants).

    Purpose of the Study:

    • To investigate kin recognition in the roots of Cycas edentata.
    • To determine if kin recognition occurs in gymnosperms, expanding the known phylogenetic range of this phenomenon.

    Main Methods:

    • Literature review to identify existing reports of kin recognition in spermatophytes.
    • Analysis of the Cycas edentata study as the first reported instance outside of angiosperms.

    Main Results:

    • Kin recognition by roots was demonstrated in Cycas edentata.
    • This is the first report of root kin recognition in a spermatophyte other than angiosperms.

    Conclusions:

    • Root kin recognition is not limited to angiosperms.
    • The phenomenon likely represents an ancient trait in spermatophytes, predating the evolution of flowering plants.