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首页> 美国卫生研究院文献>Nanomaterials >Carbon Nanotubes Improved the Germination and Vigor of Plant Species from Peatland Ecosystem Via Remodeling the Membrane Lipidome
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Carbon Nanotubes Improved the Germination and Vigor of Plant Species from Peatland Ecosystem Via Remodeling the Membrane Lipidome

机译：碳纳米管通过改造膜脂质体通过改造蛋白质生态系统改善植物物种的萌发和活力

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Application of the nanopriming technique to alleviate seed dormancy has shown promising results in various agricultural crop species. However, there is a dearth of knowledge regarding its potential use in native peatland boreal forest species to alleviate seed dormancy and improve their propagation or vigor for forest reclamation activities. Herein, we demonstrate the use of nanopriming with carbon nanotubes (CNT) to alleviate seed dormancy, improved seed germination, and seedling vigor in two boreal peatland species. Bog birch (Betula pumila L.) and Labrador tea (Rhododendron groenlandicum L.) seeds with embryo or seed coat dormancy were nanoprimed with either 20 or 40 µg/mL CNT, cold stratified at 2–4 °C for 15 days, and allowed to germinate at room temperature. The emerged seedlings’ lipidome was assessed to decipher the role of lipid metabolism in alleviating seed dormancy. We observed significant (p < 0.05) improvement in seedling germination and seedling vigor in seeds primed with multiwalled carbon nanotubes functionalized with carboxylic acids. Phosphatidylcholine (PC 18:1/18:3), phosphatidylglycerol (PG 16:1/18:3), and lysophosphatidylcholine (LPC 18:3) molecular species (C18:3 enriched) were observed to be highly correlated with the increased seed germination percentages and the enhanced seedling vigor. Mechanistically, it appears that carbon nanoprimed seeds following stratification are effective in mediating seed dormancy by remodeling the seed membrane lipids (C18:3 enriched PC, PG, and LPC) in both peatland boreal forest species. The study results demonstrate that nanopriming may provide a solution to resolve seed dormancy issues by enhancing seed germination, propagation, and seedling vigor in non-resource boreal forest species ideally suited for forest reclamation following anthropogenic disturbances.
机译：纳米那药技术在缓解种子休眠中的应用表明了各种农业作物物种的有希望的结果。然而，有些关于其在天然泥炭巨林林种中潜在使用的知识，以减轻种子休眠，改善森林填海活动的传播或活力。在此，我们证明了用碳纳米管（CNT）使用纳米莫米米，以缓解种子休眠，改善种子萌发和两种北方泥炭地物种中的幼苗活力。 Bog Birch（Betula Pumila L.）和拉布拉多茶（Rhododendron Groenlandic L.）种子与胚胎或种子涂层休眠的种子用20或40μg/ ml CNT，冷分层在2-4℃下15天，并允许在室温下发芽。评估出现的幼苗的脂质体以破译脂质代谢在减轻种子休眠方面的作用。在用羧酸官能化的多壁碳纳米管的种子中，观察到幼苗萌发和幼苗活力的显着（P <0.05）改善。磷脂酰胆碱（PC 18：1/18：3），磷脂酰甘油（PG 16：1/18：3）和溶血磷酰氨基（LPC 18：3）分子种（C18：3富集）与种子增加高度相关发芽百分比和增强的幼苗活力。机械地，似乎在分层后的碳纳米离子种子通过在泥炭地北方森林物种中重塑种子膜脂质（C18：3富集的PC，PG和LPC）是有效的介导种子休眠。该研究结果表明，NanoMiming可以通过增强非资源巨林物种中的种子萌发，繁殖和幼苗活力来解决种子休眠问题的溶液，其在人为紊乱后的森林填海层的非资源博林种。

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