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首页> 外文期刊>European Chemical Bulletin >PHYTOTOXICITY OF CARBON NANOTUBES IS ASSOCIATED WITH DISTURBANCES OF ZINC HOMEOSTASIS
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PHYTOTOXICITY OF CARBON NANOTUBES IS ASSOCIATED WITH DISTURBANCES OF ZINC HOMEOSTASIS

机译：碳纳米管的植物毒性与锌稳态的扰动有关

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Effects of short-term seed treatments with multi-walled carbon nanotubes (MWCNTs) on seedling development in soil culture and of root-exposure in hydroponics were studied on soybean, considered as model plant system. At 8 days after sowing and in later stages of seedling development, stunted growth and poor fine root production were detected. More detailed investigations revealed zinc (Zn) deficiency as a major growth-limiting factor. The growth of affected plants was recovered by foliar application of ZnSO 4 or by cultivation in nutrient solution supplied with soluble ZnSO 4 . Since Zn is an important co-factor of enzymes involved in detoxification of reactive oxygen species (ROS), such as copper-zinc superoxide dismutases, stunted plant growth in response to MWCNTs treatments may be related to oxidative damage associated with lipid peroxidation and excessive oxidative degradation of auxin as growth hormone important for lateral root formation and leaf expansion.
机译：以大豆为模型植物，研究了多壁碳纳米管（MWCNTs）短期种子处理对土壤培养中幼苗生长和水培法根系暴露的影响。播种后第8天和幼苗发育的后期，检测到发育迟缓和细根生产不佳。更详细的研究表明锌（Zn）缺乏是主要的生长限制因素。通过叶面施用ZnSO 4或在提供有可溶性ZnSO 4的营养液中培养来恢复受影响植物的生长。由于锌是参与活性氧（ROS）排毒的酶的重要辅助因子，例如铜锌超氧化物歧化酶，因此响应MWCNTs处理而生长受阻的植物生长可能与脂质过氧化和过度氧化相关的氧化损伤有关。生长素作为生长激素的降解对于侧根形成和叶片扩张很重要。

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