Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162409
Title: Unraveling the distinct germination processes of sporopollenin-based pollen grains and spores through morphological analyses upon natural nano-architectonics process
Authors: Shi, Qian
Mohammed Shahrudin Ibrahim
Zhang, Xingyu
Hwang, Youngkyu
Chin, Hokyun
Chen, Shengyang
Tan, Wen See
Li, Hua
Song, Juha
Cho, Nam-Joon
Keywords: Engineering::Materials
Engineering::Bioengineering
Issue Date: 2022
Source: Shi, Q., Mohammed Shahrudin Ibrahim, Zhang, X., Hwang, Y., Chin, H., Chen, S., Tan, W. S., Li, H., Song, J. & Cho, N. (2022). Unraveling the distinct germination processes of sporopollenin-based pollen grains and spores through morphological analyses upon natural nano-architectonics process. Applied Materials Today, 27, 101471-. https://dx.doi.org/10.1016/j.apmt.2022.101471
Project: A1983c0031 
Journal: Applied Materials Today
Abstract: The outermost exine capsules of many pollen and spore grains are composed of a chemically inert yet mechanically robust sporopollenin biopolymer. These dynamically expansible and foldable capsules have great potential as renewable functional biomaterials with industrial applications. However, the mechanical and morphological variations in the shape, size, robustness, and apertural strength of the exine capsules across taxa of angiosperms and cryptogamic plants remains poorly understood. Thus, in this study, we unraveled the abortive microgel transformation of spores inspired by their germination mechanism, being compared with eudicot-based pollen microgels. After chemical treatments, significant mechanical degradation of exine was clearly observed for the Camellia pollen, whereas crosslinking density and modulus of spore exine remained almost constant. The significant volume expansion of Camellia pollen was observed akin to sunflower pollen; in contrast, the spores ballooned showed limited volume changes under equal levels of turgor pressure. Furthermore, spore underwent marked changes in volume when their aperture sutures were softened and ruptured, which are prerequisites for spore germination. Therefore, this study disentangled mechanical and morphological origins of biochemical pathways of pollen and spore germination, and germination-like hydration and desiccation, which will give clues about selection of pollen and spore species for potential biomaterial applications.
URI: https://hdl.handle.net/10356/162409
ISSN: 2352-9407
DOI: 10.1016/j.apmt.2022.101471
Rights: © 2022 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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