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izvor podataka: crosbi

Physiological, ultrastructural and proteomic responses of tobacco seedlings exposed to silver nanoparticles and silver nitrate (CROSBI ID 252820)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Peharec Štefanić, Petra ; Cvjetko, Petra ; Biba, Renata ; Domijan, Ana-Marija ; Letofsky-Papst, Ilse ; Tkalec, Mirta ; Šikić, Sandra ; Cindrić, Mario ; Balen, Biljana Physiological, ultrastructural and proteomic responses of tobacco seedlings exposed to silver nanoparticles and silver nitrate // Chemosphere, 209 (2018), 640-653. doi: 10.1016/j.chemosphere.2018.06.128

Podaci o odgovornosti

Peharec Štefanić, Petra ; Cvjetko, Petra ; Biba, Renata ; Domijan, Ana-Marija ; Letofsky-Papst, Ilse ; Tkalec, Mirta ; Šikić, Sandra ; Cindrić, Mario ; Balen, Biljana

engleski

Physiological, ultrastructural and proteomic responses of tobacco seedlings exposed to silver nanoparticles and silver nitrate

Since silver nanoparticles (AgNPs) are a dominant nanomaterial in consumer products, there is growing concern about their impact on the environment. Although numerous studies on the effects of AgNPs on living organisms have been conducted, the interaction of AgNPs with plants has not been fully clarified. To reveal the plant mechanisms activated after exposure to AgNPs and to differentiate between effects specific to nanoparticles and ionic silver, we investigated the physiological, ultrastructural and proteomic changes in seedlings of tobacco (Nicotiana tabacum) exposed to commercial AgNPs and ionic silver(AgNO3) from the seed stage. A higher Ag content was measured in seedlings exposed to AgNPs than in those exposed to the same concentration of AgNO3. However, the results on oxidative stress parameters obtained revealed that, in general, higher toxicity was recorded in AgNO3-treated seedlings than in those exposed to nanosilver. Ultrastructural analysis of root cells confirmed the presence of silver in the form of nanoparticles, which may explain the lower toxicity of AgNPs. However, the ultrastructural changes of chloroplasts as well as proteomic study showed that both AgNPs and AgNO3 can affect photosynthesis. Moreover, the majority of the proteins involved in the primary metabolism were up-regulated after both types of treatments, indicating that enhanced energy production, which can be used to reinforce defensive mechanisms, enables plants to cope with silver-induced toxicity.

Silver nanoparticles ; Nicotiana tabacum ; Phytotoxicity ; Ultrastructure ; Proteomics

European Union Seventh Framework Programme under Grant Agreement 312483 - ESTEEM2 (Integrated Infrastructure InitiativeeI3)

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Podaci o izdanju

209

2018.

640-653

objavljeno

0045-6535

1879-1298

10.1016/j.chemosphere.2018.06.128

Povezanost rada

Biologija

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