Mechanics of Inactive Swelling and Bursting of Porate Pollen Grains (CROSBI ID 717060)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Šiber, Antonio
engleski
Mechanics of Inactive Swelling and Bursting of Porate Pollen Grains
The mechanical structure of pollen grains, typically characterized by soft apertures in an otherwise stiff exine shell, determines their response to changes in the humidity of the environment. These changes can lead to grain infolding but also to excessive swelling and even bursting of pollen grains. We use an elastic model to explore the mechanics of pollen grain swelling and the role that soft, circular apertures (pores) play in this process. We identify and explore a mechanical weakness of the pores, which are prone to a huge inflation once the grain swells to a critical extent. This transition leads to the bursting of the grain and the release of its content. Our results shed light on the inactive part of the mechanical response of pollen grains to hydration once they land on a stigma as well as on bursting of airborne pollen grains when the air humidity increases.
pollen, bursting, humidity, swelling
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Podaci o prilogu
18-18.
2022.
objavljeno
Podaci o matičnoj publikaciji
15th Easter Biophysics Workshop (EBW2022)
Bonthuis, Douwe ; Jennings, James ; Semeraro, Enrico F ; Pabst, Georg
Graz: Uni Graz
Podaci o skupu
15th Easter Biophysics Workshop
predavanje
19.04.2022-20.04.2022
Tainach, Austrija