Adhesion of the mucilage envelope of Ocimum basilicum seeds probed by sum frequency generation spectroscopy.

IF 2.9 3区 化学 Q3 CHEMISTRY, PHYSICAL
Soft Matter Pub Date : 2024-12-12 DOI:10.1039/d4sm01057d
Mette H Rasmussen, Mikkel Bregnhøj, Agnieszka Kreitschitz, Stanislav N Gorb, Tobias Weidner
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引用次数: 0

Abstract

The attachment of seeds to natural surfaces is important for the reproductive success of plants. This study investigates the adhesion mechanisms of Ocimum basilicum seed mucilage to CaF2 and polystyrene surfaces, using sum frequency generation (SFG) vibrational spectroscopy and pull-off force measurements. The results show that the adhesion is driven by the formation of crystalline cellulose at the interface. Initially, cellulose within the mucilage envelope is disordered due to strong cellulose-water interactions. As water evaporates, cellulose interactions with the substrate increase, leading to a more ordered molecular structure, with the degree of order varying between substrates. The CaF2 surface promotes a more crystalline cellulose assembly, whereas polystyrene results in a less ordered structure. Despite the reduced order, adhesion strength is higher on the polystyrene surface, suggesting that molecular disorder enhances the ability of the mucilage to absorb mechanical stress, thereby improving adhesion. These findings highlight the significant role of substrate chemistry in seed adhesion.

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来源期刊
Soft Matter
Soft Matter 工程技术-材料科学:综合
CiteScore
6.00
自引率
5.90%
发文量
891
审稿时长
1.9 months
期刊介绍: Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.
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