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Statements

Subject Item
n2:RIV%2F00027006%3A_____%2F12%3A00002262%21RIV13-MZE-00027006
rdf:type
n10:Vysledek skos:Concept
dcterms:description
The effect of exposure to 100 mg/L zinc oxide (nZnO), fullerene soot (FS) or titanium dioxide (nTiO2)nanoparticles on gene expression in Arabidopsis thaliana roots was studied using microarrays. After 7 d,nZnO, FS, or nTiO2 exposure resulted in 660 up- and 826 down-regulated genes, 232 up- and 189 downregulated genes, and 80 up- and 74 down-regulated genes, respectively (expression difference > 2-fold; p[t test] < 0.05). The genes induced by nZnO and FS include mainly ontology groups annotated as stress responsive, including both abiotic (oxidative, salt, water deprivation) and biotic (wounding and defense to pathogens) stimuli. The down-regulated genes upon nZnO exposure were involved in cell organization and biogenesis, including translation, nucleosome assembly and microtubule based process. FS largely repressed the transcription of genes involved in electron transport and energy pathways. Only mild changes in gene expression were observed upon nTiO2 exposure, which resulted in up- and downregulation of genes involved mainly in responses to biotic and abiotic stimuli. The data clearly indicie that the mechanisms of phytotoxicity are highly nanoparticle dependent despite of a limited overlap in gene expression response. The effect of exposure to 100 mg/L zinc oxide (nZnO), fullerene soot (FS) or titanium dioxide (nTiO2)nanoparticles on gene expression in Arabidopsis thaliana roots was studied using microarrays. After 7 d,nZnO, FS, or nTiO2 exposure resulted in 660 up- and 826 down-regulated genes, 232 up- and 189 downregulated genes, and 80 up- and 74 down-regulated genes, respectively (expression difference > 2-fold; p[t test] < 0.05). The genes induced by nZnO and FS include mainly ontology groups annotated as stress responsive, including both abiotic (oxidative, salt, water deprivation) and biotic (wounding and defense to pathogens) stimuli. The down-regulated genes upon nZnO exposure were involved in cell organization and biogenesis, including translation, nucleosome assembly and microtubule based process. FS largely repressed the transcription of genes involved in electron transport and energy pathways. Only mild changes in gene expression were observed upon nTiO2 exposure, which resulted in up- and downregulation of genes involved mainly in responses to biotic and abiotic stimuli. The data clearly indicie that the mechanisms of phytotoxicity are highly nanoparticle dependent despite of a limited overlap in gene expression response.
dcterms:title
Nanoparticle-specific changes in Arabidopsis thaliana gene expression after exposure to ZnO, TiO2, and fullerene soot Nanoparticle-specific changes in Arabidopsis thaliana gene expression after exposure to ZnO, TiO2, and fullerene soot
skos:prefLabel
Nanoparticle-specific changes in Arabidopsis thaliana gene expression after exposure to ZnO, TiO2, and fullerene soot Nanoparticle-specific changes in Arabidopsis thaliana gene expression after exposure to ZnO, TiO2, and fullerene soot
skos:notation
RIV/00027006:_____/12:00002262!RIV13-MZE-00027006
n10:predkladatel
n19:ico%3A00027006
n5:aktivita
n7:P n7:V n7:Z
n5:aktivity
P(LH11047), V, Z(AV0Z50380511)
n5:cisloPeriodika
November
n5:dodaniDat
n9:2013
n5:domaciTvurceVysledku
n11:9998950
n5:druhVysledku
n8:J
n5:duvernostUdaju
n13:S
n5:entitaPredkladatele
n12:predkladatel
n5:idSjednocenehoVysledku
152955
n5:idVysledku
RIV/00027006:_____/12:00002262
n5:jazykVysledku
n17:eng
n5:klicovaSlova
Microarray; Nanoparticles; Gene expression; Stress reaction; Arabidopsis
n5:klicoveSlovo
n6:Stress%20reaction n6:Nanoparticles n6:Gene%20expression n6:Microarray n6:Arabidopsis
n5:kodStatuVydavatele
NL - Nizozemsko
n5:kontrolniKodProRIV
[D845E3ED591A]
n5:nazevZdroje
Journal of Hazardous Materials
n5:obor
n14:EB
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
8
n5:projekt
n20:LH11047
n5:rokUplatneniVysledku
n9:2012
n5:svazekPeriodika
241
n5:tvurceVysledku
Andrlová, J. White, J. Vaňková, R. Hodek, Jan Maršík, P. Landa, P. Vaněk, T. Štorchová, H.
n5:wos
000313088300004
n5:zamer
n18:AV0Z50380511
s:issn
0304-3894
s:numberOfPages
8
n15:doi
10.1016/j.jhazmat.2012.08.059