Maryška Lukáš, Jindřichová Barbora, Siegel Jakub, Záruba Kamil, Burketová Lenka
Institute of Experimental Botany, The Czech Academy of Sciences, Rozvojová 313, 165 02, Prague 6 - Lysolaje, Czech Republic.
University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6 - Dejvice, Czech Republic.
AoB Plants. 2023 Feb 2;15(2):plad004. doi: 10.1093/aobpla/plad004. eCollection 2023 Feb.
The technological exploitation of palladium or palladium nanoparticles (PdNPs) is increasing, and their wider usage relates to an unwanted release of pollutants into the environment, raising public health concerns about the infiltration of palladium into the consumption chain. This study focuses on the effect of spherical gold-cored PdNPs of 50 ± 10 nm diameter stabilized by sodium citrate on the interaction between an oilseed rape () and the fungal pathogen Pretreatment of cotyledons with PdNPs suspension 24 h before but not 24 h after inoculation with resulted in a decrease in the extent of disease symptoms; however, this effect was caused by Pd ions (35 mg l or 70 mg l). Tests to determine any direct antifungal activity on demonstrated that the residual Pd ions present in the PdNP suspension were responsible for the antifungal activity and that PdNPs themselves do not contribute to this effect. plants did not show any symptoms of palladium toxicity in any form. PdNPs/Pd slightly increased the chlorophyll content and the transcription of indicating the activation of the plant defence system. We conclude that the only toxic effect of the PdNP suspension was on via ions and that PdNPs/Pd did not have any deleterious effect on the plants.
钯或钯纳米颗粒（PdNPs）的技术应用正在增加，其更广泛的使用导致污染物意外释放到环境中，引发了公众对钯渗入消费链的健康担忧。本研究聚焦于由柠檬酸钠稳定的直径为50±10 nm的球形金核PdNPs对油菜（）与真菌病原体之间相互作用的影响。在接种前24小时而非接种后24小时用PdNPs悬浮液预处理子叶，可导致病害症状程度降低；然而，这种效应是由钯离子（35 mg l或70 mg l）引起的。对进行任何直接抗真菌活性测试表明，PdNP悬浮液中存在的残留钯离子是抗真菌活性的原因，而PdNPs本身对此效应没有贡献。植物未表现出任何形式的钯毒性症状。PdNPs/Pd略微增加了叶绿素含量和的转录，表明植物防御系统被激活。我们得出结论，PdNP悬浮液的唯一毒性作用是通过离子对产生的，而PdNPs/Pd对植物没有任何有害影响。
