Biophysical characteristics of the stem and petiole surface of six hemlock (Tsuga) species and a hybrid: implications for resistance to Adelges tsugae
Biophysical characteristics of the stem and petiole surface of six hemlock (Tsuga) species and a hybrid: implications for resistance to Adelges tsugae
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六种铁杉及其杂种的茎和叶柄表面的生物物理特征：对铁杉抗性的影响
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发表时间：
2012
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影响因子：
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通讯作者：
F.P. Hain
中科院分区：
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作者：
K. Oten;G.R. Bauchan;J. Frampton;F.P. Hain
植物表面的特征显着影响植食性昆虫对寄主植物的选择。使用低温扫描电子显微镜研究了六种铁杉属（铁杉属）及其杂种的表面形态。观察重点是毛状体的存在和位置以及角质层厚度。这些特征是在物种水平寄主植物对铁杉毛状铁杉（半翅目：铁杉科）的抗性的背景下进行研究的，铁杉是一种外来昆虫，导致美国东部的东部铁杉（Tsuga canadensis (L.) Carr.）和卡罗莱纳铁杉（Tsuga caroliniana Engelm.）大量死亡。昆虫原生地的铁杉不会屈服于虫害，其抵抗机制尚不清楚。我们通过比较四种抗性铁杉物种和与两种易感铁杉物种的杂交种，探讨了植物表面形态在铁杉相互作用中的潜在作用。我们发现毛状体很可能...
Characteristics of the plant surface significantly affect host-plant selection by phytophagous insects. Surface morphology of six hemlock species (Tsuga spp.) and a hybrid was investigated using low-temperature scanning electron microscopy. Observations focused on trichome presence and placement and cuticle thickness. These characteristics were studied in the context of species-level host-plant resistance to the hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), an exotic insect causing massive mortality to eastern hemlocks (Tsuga canadensis (L.) Carr.) and Carolina hemlock (Tsuga caroliniana Engelm.) in the eastern United States. Hemlocks in the native range of the insect do not succumb to infestations and the mechanism of resistance is unknown. We addressed the potential role of plant surface morphology in the adelgid–hemlock interaction by comparing four adelgid-resistant hemlock species and a hybrid with the two adelgid-susceptible hemlock species. We found that trichomes are likely...