Number of the records: 1
ZnO nanoparticle effects on hormonal pools in Arabidopsis thaliana
- 1.
SYSNO ASEP 0476522 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title ZnO nanoparticle effects on hormonal pools in Arabidopsis thaliana Author(s) Vaňková, Radomíra (UEB-Q) RID, ORCID
Landa, Přemysl (UEB-Q) RID, ORCID
Podlipná, Radka (UEB-Q) RID, ORCID
Dobrev, Petre (UEB-Q) RID, ORCID
Přerostová, Sylva (UEB-Q) RID, ORCID, SAI
Langhansová, Lenka (UEB-Q) RID, ORCID
Gaudinová, Alena (UEB-Q) ORCID
Moťková, Kateřina (UEB-Q) ORCID
Knirsch, Vojtěch (UEB-Q) ORCID
Vaněk, Tomáš (UEB-Q) RID, ORCIDNumber of authors 10 Source Title Science of the Total Environment. - : Elsevier - ISSN 0048-9697
Roč. 593, SEP 1 (2017), s. 535-542Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords Abscisic acid ; Cytokinin ; Plant hormone ; ZnO nanoparticle Subject RIV DN - Health Impact of the Environment Quality OECD category Plant sciences, botany R&D Projects LD14125 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LD14120 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 8G15003 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEB-Q - RVO:61389030 UT WOS 000401201800055 EID SCOPUS 85016151955 DOI 10.1016/j.scitotenv.2017.03.160 Annotation At present, nanoparticles have been more and more used in a wide range of areas. However, very little is known about the mechanisms of their impact on plants, as both positive and negative effects have been reported. As plant interactions with the environment are mediated by plant hormones, complex phytohormone analysis has been performed in order to characterize the effect of ZnO nanoparticles (mean size 30 nm, concentration range 0.16–100 mg L − 1 ) on Arabidopsis thaliana plants. Taking into account that plant hormones exhibit high tissue-specificity as well as an intensive cross-talk in the regulation of growth and development as well as defense, plant responses were followed by determination of the content of five main phytohormones (cytokinins, auxins, abscisic acid, salicylic acid and jasmonic acid) in apices, leaves and roots. Increasing nanoparticle concentration was associated with gradually suppressed biosynthesis of the growth promoting hormones cytokinins and auxins in shoot apical meristems (apices). In contrast, cis-zeatin, a cytokinin associated with stress responses, was elevated by 280% and 590% upon exposure to nanoparticle concentrations 20 and 100 mg L − 1 , respectively, in roots. Higher ZnO nanoparticle doses resulted in up-regulation of the stress hormone abscisic acid, mainly in apices and leaves. In case of salicylic acid, stimulation was found in leaves and roots. The other stress hormone jasmonic acid (as well as its active metabolite jasmonate isoleucine) was suppressed at the presence of nanoparticles. The earliest response to nanoparticles, associated with down-regulation of growth as well as of cytokinins and auxins, was observed in apices. At higher dose, up-regulation of abscisic acid, was detected. This increase, together with elevation of the other stress hormone salicylic acid, indicates that plants sense nanoparticles as severe stress. Gradual accumulation of cis-zeatin in roots may contribute to relatively higher stress resistance of this tissue. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2018
Number of the records: 1