Repositorio UFRO · Omeka S

Physiological and molecular effects of TiO2 nanoparticle application on UV-A radiation stress responses in Solanum lycopersicum L.

Primer Autor	Tighe-Neira, Ricardo
Co-autores	Sanchez-Campos, Yissel Carcamo-Fincheira, Paz Gonzalez-Villagra, Jorge Jorquera-Fontena, Emilio Acevedo, Patricio Soto-Cerda, Braulio Nunes-Nesi, Adriano Inostroza-Blancheteau, Claudio
Título	Physiological and molecular effects of TiO2 nanoparticle application on UV-A radiation stress responses in Solanum lycopersicum L.
Editorial	SPRINGER WIEN
Revista	PROTOPLASMA
Lenguaje	en
Resumen	Nanoparticles (NPs) of titanium dioxide (TiO2) alter photosynthetic and biochemical parameters in Solanum lycopersicum L., possibly due to their photocatalytic properties given by energy absorption in the UV-A range, however, the joint effects TiO2 NPs and UV-A radiation are not well understood. This work evaluates the combined responses of TiO2 NPs and UV-A radiation at the physiological and molecular levels in S. lycopersicum. In a split growth chamber, the presence (UV-A +) and absence (UV-A -) of UV-A were combined with 0 (water as a control), and 1000 and 2000 mg L-1 of TiO2 NPs applied at sowing. At the end of exposure (day 30 after sowing), the photosynthetic performance was determined, and biochemical and molecular parameters were evaluated in leaf tissues. Better photochemical performance in UV-A + than UV-A - in control plants was observed, but these effects decreased in 1000 and 2000 mg TiO2 L-1, similar to net CO2 assimilation. A clear increase in photosynthetic pigment levels was recorded under UV-A + compared to UV-A - that was positively correlated with photosynthetic parameters. A concomitant increase in total phenols was observed on adding TiO2 in UV-A - conditions, while a decreasing trend in lipid peroxidation was observed for the same treatments. There was an increase in psbB gene expression under TiO2/UV-A + treatments, and a reduced expression of rbcS and rbcL under UV-A - . These results suggest that the reduction in photosynthetic performance on applying high doses of TiO2 NPs is probably due to biochemical limitation, while UV-A achieves the same result via the photochemical component.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1007/s00709-023-01868-0
Formato Recurso	PDF
Palabras Claves	Photosynthesis Titanium dioxide Gene expression Antioxidant system
Ubicación del archivo	http://dx.doi.org/10.1007/s00709-023-01868-0
Categoría OCDE	Ciencias vegetales Biología celular
Materias	Fotosíntesis Dióxido de titanio La expresion genica Sistema antioxidante
Página de inicio (Recomendado-único)	1527.0
Página final (Recomendado-único)	1537
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	restringido
Access Rights	restringido
Id de Web of Science	WOS:000999953200001
ISSN	0033-183X
Tipo de ruta	verde / hibrido
Categoría WOS	Ciencias vegetales Biología celular
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID-FONDECYT 1201749 UCT VIPUCT No2019 EM-RT-05 ANID FEQUIP2018-CI-04 ANID FONDECYT 1201749 UCT VIP 2019 EM-RT-05