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Thorium impact on tobacco root transcriptome
K. Mazari, P. Landa, S. Přerostová, K. Müller, R. Vaňková, P. Soudek, T. Vaněk,
Jazyk angličtina Země Nizozemsko
Typ dokumentu časopisecké články
- MeSH
- cyklopentany metabolismus MeSH
- down regulace MeSH
- fosfáty chemie MeSH
- fyziologický stres účinky léků MeSH
- kadmium metabolismus MeSH
- kořeny rostlin metabolismus MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- kyselina salicylová metabolismus MeSH
- listy rostlin metabolismus MeSH
- oxidační stres MeSH
- oxylipiny metabolismus MeSH
- reaktivní formy kyslíku metabolismus MeSH
- regulace genové exprese u rostlin * MeSH
- stanovení celkové genové exprese MeSH
- tabák účinky léků MeSH
- thorium farmakologie MeSH
- transkriptom * MeSH
- upregulace MeSH
- železo chemie MeSH
- Publikační typ
- časopisecké články MeSH
Thorium is natural actinide metal with potential use in nuclear energetics. Contamination by thorium, originated from mining activities or spills, represents environmental risk due to its radioactivity and chemical toxicity. A promising approach for cleaning of contaminated areas is phytoremediation, which need to be based, however, on detail understanding of the thorium effects on plants. In this study we investigated transcriptomic response of tobacco roots exposed to 200μM thorium for one week. Thorium application resulted in up-regulation of 152 and down-regulation of 100 genes (p-value <0.01, fold change ≥2). The stimulated genes were involved in components of jasmonic acid and salicylic acid signaling pathways and various abiotic (e.g. oxidative stress) and biotic stress (e.g. pathogens, wounding) responsive genes. Further, up-regulation of phosphate starvation genes and down-regulation of genes involved in phytic acid biosynthesis indicated that thorium disturbed phosphate uptake or signaling. Also expression of iron responsive genes was influenced. Negative regulation of several aquaporins indicated disturbance of water homeostasis. Genes potentially involved in thorium transport could be zinc-induced facilitator ZIF2, plant cadmium resistance PCR2, and ABC transporter ABCG40. This study provides the first insight at the processes in plants exposed to thorium.
Citace poskytuje Crossref.org
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