Seed Mucilage Promotes Dispersal of IPlantago asiatica/I Seeds by Facilitating Attachment to Shoes

Understanding the mechanisms underlying seed dispersal is a fundamental issue in plant ecology and vegetation management. Several species demonstrate myxospermy, a phenomenon where the seeds form mucilage after absorbing water. Mucilage is thought to act as a glue, enabling seeds to attach to the ex...

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Veröffentlicht in:Sustainability 2022-06, Vol.14 (11)
Hauptverfasser: Abe, Nanako, Koyama, Kohei, Okamoto, Azumi, Katayama, Kowa, Kato, Yura, Mimura, Natsuki, Okoshi, Shoji, Tanaka, Yuki
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container_issue 11
container_start_page
container_title Sustainability
container_volume 14
creator Abe, Nanako
Koyama, Kohei
Okamoto, Azumi
Katayama, Kowa
Kato, Yura
Mimura, Natsuki
Okoshi, Shoji
Tanaka, Yuki
description Understanding the mechanisms underlying seed dispersal is a fundamental issue in plant ecology and vegetation management. Several species demonstrate myxospermy, a phenomenon where the seeds form mucilage after absorbing water. Mucilage is thought to act as a glue, enabling seeds to attach to the external surfaces of dispersing agents. However, there have been no quantitative investigations of the efficacy of this function of seed mucilage. We performed a trampling and walking experiment to investigate the seed dispersal of a perennial herb, Asian plantain (Plantago asiatica L.), which forms polysaccharide mucilage upon hydration. Our experiment showed that: (1) after trampling, more seeds of P. asiatica attached to shoes in wet conditions (after rainfall), in which seed mucilage was created, than in dry conditions (no rainfall); and (2) after walking for 1000 m, more seeds remained attached to shoes in wet conditions than in dry conditions. Our results indicate that mucilage promotes the adherence of seeds to the surface of vectors. We therefore provide the first empirical evidence that seed mucilage facilitates epizoochory and human-mediated dispersal.
doi_str_mv 10.3390/su14116909
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title Seed Mucilage Promotes Dispersal of IPlantago asiatica/I Seeds by Facilitating Attachment to Shoes
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