Temperature alters susceptibility of Picea abies seedlings to airborne pollutants: The case of CdO nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F19%3A00506604" target="_blank" >RIV/86652079:_____/19:00506604 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081715:_____/19:00506604 RIV/00159816:_____/19:00072486 RIV/00216305:26620/19:PU136145

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0269749119303227?token=809AF84CD9D88C571611D638E47320160B12F13EB917228D401467235C8A6A70B42A553C58498A4E3BC8EB8B36B8B6E1" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0269749119303227?token=809AF84CD9D88C571611D638E47320160B12F13EB917228D401467235C8A6A70B42A553C58498A4E3BC8EB8B36B8B6E1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2019.07.061" target="_blank" >10.1016/j.envpol.2019.07.061</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Temperature alters susceptibility of Picea abies seedlings to airborne pollutants: The case of CdO nanoparticles

Popis výsledku v původním jazyce

Although plants are often exposed to atmospheric nanoparticles (NPs), the mechanism of NP depositionand their effects on physiology and metabolism, and particularly in combination with other stressors, arenot yet understood. Exploring interactions between stressors is particularly important for understandingplant responses in urban environments where elevated temperatures can be associated with air pollu-tion. Accordingly, 3-year-old spruce seedlings were exposed for 2 weeks to aerial cadmium oxide (CdO)NPs of environmentally relevant size (8e62 nm) and concentration (2 105cm 3). While half theseedlings were initially acclimated to high temperature (35 C) and vapour pressure deficit (VPD,2.81 kPa), the second half of the plants were left under non-stressed conditions (20 C, 0.58 kPa). Atomicabsorption spectrometry was used to determine Cd content in needles, while gas and liquid chroma-tography was used to determine changes in primary and secondary metabolites. Photosynthesis-relatedprocesses were explored with gas-exchange and chlorophyllfluorescence systems. Our work supportsthe hypothesis that atmospheric CdO NPs penetrate into leaves but high temperature and VPD reducesuch penetration due to stomatal closure. The hypothesis that atmospheric CdO NPs influences physi-ological and metabolic processes in plants was also confirmed. This impact strengthens with increasingtime of exposure. Finally, we found evidence that plants acclimated to stress conditions have differentsensitivity to CdO NPs compared to plants not so acclimated. Thesefindings have important conse-quences for understanding impacts of global warming on plants and indicates that although the effects ofelevated temperatures can be deleterious, this may limit other forms of plant stress associated with airpollution.

Název v anglickém jazyce

Temperature alters susceptibility of Picea abies seedlings to airborne pollutants: The case of CdO nanoparticles

Popis výsledku anglicky

Although plants are often exposed to atmospheric nanoparticles (NPs), the mechanism of NP depositionand their effects on physiology and metabolism, and particularly in combination with other stressors, arenot yet understood. Exploring interactions between stressors is particularly important for understandingplant responses in urban environments where elevated temperatures can be associated with air pollu-tion. Accordingly, 3-year-old spruce seedlings were exposed for 2 weeks to aerial cadmium oxide (CdO)NPs of environmentally relevant size (8e62 nm) and concentration (2 105cm 3). While half theseedlings were initially acclimated to high temperature (35 C) and vapour pressure deficit (VPD,2.81 kPa), the second half of the plants were left under non-stressed conditions (20 C, 0.58 kPa). Atomicabsorption spectrometry was used to determine Cd content in needles, while gas and liquid chroma-tography was used to determine changes in primary and secondary metabolites. Photosynthesis-relatedprocesses were explored with gas-exchange and chlorophyllfluorescence systems. Our work supportsthe hypothesis that atmospheric CdO NPs penetrate into leaves but high temperature and VPD reducesuch penetration due to stomatal closure. The hypothesis that atmospheric CdO NPs influences physi-ological and metabolic processes in plants was also confirmed. This impact strengthens with increasingtime of exposure. Finally, we found evidence that plants acclimated to stress conditions have differentsensitivity to CdO NPs compared to plants not so acclimated. Thesefindings have important conse-quences for understanding impacts of global warming on plants and indicates that although the effects ofelevated temperatures can be deleterious, this may limit other forms of plant stress associated with airpollution.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

—

Svazek periodika

253

Číslo periodika v rámci svazku

OCT 2019

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

646-654

Kód UT WoS článku

000483406700066

EID výsledku v databázi Scopus

—