Wang Yiwen, Carballo Rocío Gallego, Moussian Bernard
Genetik der Tiere, Universität Tübingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany.
Angewandte Zoologie, TU Dresden, Zellescher Weg 20b, 01069 Dresden, Germany
J Exp Biol. 2017 Apr 15;220(Pt 8):1396-1399. doi: 10.1242/jeb.156679. Epub 2017 Feb 6.
The integument protects the organism against penetration of xenobiotics and water that would potentially interfere with homeostasis. In insects that play key roles in a variety of agricultural and ecological habitats, this inward barrier has barely been investigated. In order to advance knowledge in this field, we studied integumental barrier (cuticle) permeability in the two global pests (greenhouse whitefly) and (bedbug), applying a simple dye-penetration assay. In agreement with our recent findings in , we show that the surface of these insects is regionalised. We also show that, in contrast to the single barrier in , two barriers with distinct temperature-sensitive and lipid-based physico-chemical material properties act in parallel to protect these insects against penetration of hydrophilic molecules. These findings imply the existence of unexplored mechanisms by which the cuticle acts as a protective coat against the penetration of water and xenobiotics, including pollutants and insecticides.
体表保护生物体免受可能干扰体内平衡的异生物质和水的侵入。在各种农业和生态栖息地中发挥关键作用的昆虫中，这种向内的屏障几乎未被研究过。为了增进该领域的知识，我们通过一种简单的染料渗透试验，研究了两种全球害虫（温室白粉虱）和（臭虫）的体表屏障（角质层）通透性。与我们最近在[具体研究对象]中的发现一致，我们表明这些昆虫的体表是分区的。我们还表明，与[另一研究对象]中的单一屏障不同，具有不同温度敏感性和基于脂质的物理化学物质特性的两个屏障并行起作用，以保护这些昆虫免受亲水分子的侵入。这些发现意味着存在尚未被探索的机制，通过这些机制角质层作为一种保护涂层，防止水和异生物质（包括污染物和杀虫剂）的侵入。
