同步辐射X射线成像技术在攀缘植物粘附系统中的应用探索
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- 英文论文题名：Synchrotron X-ray imaging technique for the attachment systems of climbing plants
- 论文作者：杨小军 ; 陈公云 ; 陈佳琪 ; 龙梦影 ; 文妮 ; 邓文礼
- 英文论文作者：Xiaojun Yang ; Gongyun Chen ; Jiaqi Chen ; Mengying Long ; Ni Wen ; Wenli Deng ; South China University of Technology
- 年：2016
- 作者机构：华南理工大学;
- 论文关键词：同步辐射 ; 攀缘植物 ; 吸盘 ; 草酸钙晶体 ; X射线成像
- 英文论文关键词：synchrotron radiation ; climbing plants ; adhesive pads ; calcium oxalate crystals ; X-ray imaging
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十八分会：纳米生物效应与纳米药物化学
- 语种：中文
- 分类号：Q944
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十八分会 ; 纳米生物效应与纳米药物化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：2
- 文件大小：225k
- 原文格式：D
- 会议级别：全国
摘要
自达尔文时代开始,攀缘植物的粘附行为吸引了科学家特别是植物学家的长期关注~([1,2])。通过光学显微镜和电子显微镜,可以了解攀缘植物粘附器官的部分结构特征,从一定程度上阐明它们的界面粘附机制。然而,这些手段不能反映粘附系统内部的结构信息,不利于全面评估其粘附行为的稳定性。利用同步辐射X射线显微断层扫描技术,我们首次实现了攀缘植物爬山虎吸盘的无损三维成像,对吸盘的表界面特征及内部形态构筑有更为全面和系统的认识。实验探索发现爬山虎吸盘内部存在大量的草酸钙晶体,而且集中分布在靠近基底的腹部皮层细胞内。基于吸盘的三维结构特征,我们提出了一种多级的系统稳固机制,保证了吸盘与基底粘附的有效性、稳定性和持久性。同步辐射X射线成像技术有望应用到更多的攀缘植物粘附系统中,从而加深对生物粘附的认识和了解。
The attachment systems of climbing plants have intrigued scientist especially botanist since the Charles Darwin era~([1-2]). By means of light or electron microscopy, we can observe the structural details on the attachment organs of climbing plants and elucidate the attachment mechanisms from some content. However, these microscopic approaches can not enter into the interior of the attachment organs nondestructively and failed to assess the validity and stability of the attachment systems comprehensively. Herein, we firstly employ synchrotron radiation X-ray imaging to investigate the mature adhesive pads of Parthenocissus tricuspidata in their native adhered state. The results show the three-dimensional(3D) morphological architecture of the attachment system. The interior high X-ray-attenuation particles are identified as calcium oxalate crystals. We elucidate the 3D distribution and quantification of crystals that might serve as a shield for mechanical support and herbivory defense. Furthermore, a hierarchical systematic reinforcement mechanism is proposed to guarantee the stability and durability of the attachment. The synchrotron X-ray imaging strategy is prospective to investigate the miraculous attachment systems in other climbing plants, thus broadening our knowledge of biological adhesion.
The attachment systems of climbing plants have intrigued scientist especially botanist since the Charles Darwin era~([1-2]). By means of light or electron microscopy, we can observe the structural details on the attachment organs of climbing plants and elucidate the attachment mechanisms from some content. However, these microscopic approaches can not enter into the interior of the attachment organs nondestructively and failed to assess the validity and stability of the attachment systems comprehensively. Herein, we firstly employ synchrotron radiation X-ray imaging to investigate the mature adhesive pads of Parthenocissus tricuspidata in their native adhered state. The results show the three-dimensional(3D) morphological architecture of the attachment system. The interior high X-ray-attenuation particles are identified as calcium oxalate crystals. We elucidate the 3D distribution and quantification of crystals that might serve as a shield for mechanical support and herbivory defense. Furthermore, a hierarchical systematic reinforcement mechanism is proposed to guarantee the stability and durability of the attachment. The synchrotron X-ray imaging strategy is prospective to investigate the miraculous attachment systems in other climbing plants, thus broadening our knowledge of biological adhesion.
引文
[1]Darwin,C.J.Linn.Soc.London,Bot.1865,9:1–118.
[2]Yang,X.;Deng,W.Chin.Sci.Bull.2014,59:113–124.
[2]Yang,X.;Deng,W.Chin.Sci.Bull.2014,59:113–124.