Pregled bibliografske jedinice broj: 1191102
Mechanics of Inactive Swelling and Bursting of Porate Pollen Grains
Mechanics of Inactive Swelling and Bursting of Porate Pollen Grains // 15th Easter Biophysics Workshop (EBW2022) / Bonthuis, Douwe ; Jennings, James ; Semeraro, Enrico F ; Pabst, Georg (ur.).
Graz: Uni Graz, 2022. str. 18-18 (predavanje, nije recenziran, sažetak, znanstveni)
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Naslov
Mechanics of Inactive Swelling and Bursting of
Porate Pollen Grains
Autori
Šiber, Antonio
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
15th Easter Biophysics Workshop (EBW2022)
/ Bonthuis, Douwe ; Jennings, James ; Semeraro, Enrico F ; Pabst, Georg - Graz : Uni Graz, 2022, 18-18
Skup
15th Easter Biophysics Workshop
Mjesto i datum
Tainach, Austrija, 20.04.2022. - 21.04.2022
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
pollen, bursting, humidity, swelling
Sažetak
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.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
