Foliar exposure of grapevine (Vitis vinifera L.) to TiO2 nanoparticles under field conditions

Photosynthetic response and flavonol profile

P. Teszlák, M. Kocsis, A. Scarpellini, G. Jakab, L. Kõrösi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In the past decade, utilization of nanostructured materials has increased intensively in a wide range of applications. Titanium dioxide nanoparticles (TiO2 NPs), for instance, can be applied for the inactivation of various pathogens through photo-induced generation of reactive oxygen species. Although TiO2 NPs with high antimicrobial activity are of great importance, in practice, their phytotoxic effects have not yet been fully clarified. In this study, we investigated the potential phytotoxicity of TiO2 NPs on grapevine (Vitis vinifera L.) under field conditions. After foliar exposure, two particularly stress-sensitive parameters, photosynthetic function and the flavonol profile, were examined. Micro- and macroelement composition of the leaves was also studied by ICP-AES measurements. We found that TiO2 NPs significantly decreased the net CO2 assimilation and increased stomatal conductance, indicating metabolic (nonstomatal) inhibition of the photosynthesis. The lower electron transport rate and lower nonphotochemical quenching in treated leaves are indicative of diminished photoprotective processes.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalPhotosynthetica
DOIs
Publication statusAccepted/In press - Jun 21 2018

Fingerprint

Nanostructures
Vitis
Photosynthesis
nanoparticles
Electron Transport
flavonols
Vitis vinifera
Nanoparticles
Reactive Oxygen Species
titanium dioxide
nanomaterials
phytotoxicity
electron transfer
stomatal conductance
leaves
reactive oxygen species
assimilation (physiology)
inactivation
anti-infective agents
carbon dioxide

ASJC Scopus subject areas

  • Physiology
  • Plant Science

Cite this

Foliar exposure of grapevine (Vitis vinifera L.) to TiO2 nanoparticles under field conditions : Photosynthetic response and flavonol profile. / Teszlák, P.; Kocsis, M.; Scarpellini, A.; Jakab, G.; Kõrösi, L.

In: Photosynthetica, 21.06.2018, p. 1-9.

Research output: Contribution to journalArticle

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