ZnO nanoparticle effects on hormonal pools in Arabidopsis thaliana

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F17%3A00476522" target="_blank" >RIV/61389030:_____/17:00476522 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/17:10371916

Result on the web

<a href="http://dx.doi.org/10.1016/j.scitotenv.2017.03.160" target="_blank" >http://dx.doi.org/10.1016/j.scitotenv.2017.03.160</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2017.03.160" target="_blank" >10.1016/j.scitotenv.2017.03.160</a>

Result language

angličtina

Original language name

ZnO nanoparticle effects on hormonal pools in Arabidopsis thaliana

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Volume of the periodical

593

Issue of the periodical within the volume

SEP 1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

535-542

UT code for WoS article

000401201800055

EID of the result in the Scopus database

2-s2.0-85016151955