当前位置: X-MOL 学术Plant Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Surprising absence of association between flower surface microstructure and pollination system.
Plant Biology ( IF 4.2 ) Pub Date : 2019-12-12 , DOI: 10.1111/plb.13071
M Kraaij 1 , C J van der Kooi 1
Affiliation  

The epidermal cells of flowers come in different shapes and have different functions, but how they evolved remains largely unknown. Floral micro-texture can provide tactile cues to insects, and increases in surface roughness by means of conical (papillose) epidermal cells may facilitate flower handling by landing insect pollinators. Whether flower microstructure correlates with pollination system remains unknown. Here, we investigate the floral epidermal microstructure in 29 (congeneric) species pairs with contrasting pollination system. We test whether flowers pollinated by bees and/or flies feature more structured, rougher surfaces than flowers pollinated by non-landing moths or birds and flowers that self-pollinate. In contrast with earlier studies, we find no correlation between epidermal microstructure and pollination system. The shape, cell height and roughness of floral epidermal cells varies among species, but is not correlated with pollinators at large. Intriguingly, however, we find that the upper (adaxial) flower surface that surrounds the reproductive organs and often constitutes the floral display is markedly more structured than the lower (abaxial) surface. We thus conclude that conical epidermal cells probably play a role in plant reproduction other than providing grip or tactile cues, such as increasing hydrophobicity or enhancing the visual signal.

中文翻译:


令人惊讶的是花表面微观结构和授粉系统之间没有关联。



花朵的表皮细胞有不同的形状和不同的功能,但它们是如何进化的仍然很大程度上未知。花朵的微纹理可以为昆虫提供触觉提示,并且通过圆锥形(乳头状)表皮细胞增加表面粗糙度可以通过着陆昆虫传粉者来促进花朵处理。花的微观结构是否与授粉系统相关仍不清楚。在这里,我们研究了具有对比授粉系统的 29 个(同类)物种对的花表皮微观结构。我们测试由蜜蜂和/或苍蝇授粉的花朵是否比由非着陆飞蛾或自花授粉的鸟类和花朵授粉的花朵具有更结构化、更粗糙的表面。与早期的研究相比,我们发现表皮微观结构与授粉系统之间没有相关性。花表皮细胞的形状、细胞高度和粗糙度因物种而异,但与整个授粉昆虫无关。然而,有趣的是,我们发现围绕生殖器官并通常构成花卉展示的上(近轴)花表面明显比下(远轴)表面更有结构。因此,我们得出结论,圆锥形表皮细胞除了提供抓握或触觉提示(例如增加疏水性或增强视觉信号)之外,可能在植物繁殖中发挥作用。
更新日期:2019-12-12
down
wechat
bug