Repositorio
Institucional

Inostroza-Blancheteau, Claudio

Tighe-Neira, Ricardo#Carmora, Erico#Recio, Gonzalo#Nunes-Nesi, Adriano#Reyes-Diaz, Marjorie#Alberdi, Miren#Rengel, Zed

Metallic nanoparticles influence the structure and function of the photosynthetic apparatus in plants

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER

PLANT PHYSIOLOGY AND BIOCHEMISTRY

en

The applications of nanoparticles continue to expand into areas as diverse as medicine, bioremediation, cosmetics, pharmacology and various industries, including agri-food production. The widespread use of nano particles has generated concerns given the impact these nanoparticles mostly metal-based such as CuO, Ag, Au, CeO2, TiO2, ZnO, Co, and Pt - could be having on plants. Some of the most studied variables are plant growth, development, production of biomass, and ultimately oxidative stress and photosynthesis. A systematic appraisal of information about the impact of nanoparticles on these processes is needed to enhance our understanding of the effects of metallic nanoparticles and oxides on the structure and function on the plant photosynthetic apparatus. Most nanoparticles studied, especially CuO and Ag, had a detrimental impact on the structure and function of the photosynthetic apparatus. Nanoparticles led to a decrease in concentration of photosynthetic pigments, especially chlorophyll, and disruption of grana and other malformations in chloroplasts. Regarding the functions of the photosynthetic apparatus, nanoparticles were associated with a decrease in the photosynthetic efficiency of photosystem H and decreased net photosynthesis. However, CeO2 and TiO2 nanoparticles may have a positive effect on photosynthetic efficiency, mainly due to an increase in electron flow between the photo systems II and I in the Hill reaction, as well as an increase in Rubisco activity in the Calvin and Benson cycle. Nevertheless, the underlying mechanisms are poorly understood. The future mechanistic work needs to be aimed at characterizing the enhancing effect of nanoparticles on the active generation of ATP and NADPH, carbon fixation and its incorporation into primary molecules such as photo-assimilates.

Artículo de revisión

This work was funded by the Bio-Nanomaterials Research Group No201GI-CI-01, VIP Universidad Catolica de Temuco and CONICYT-PCHA/Doctorado Nacional/2016-21160984 scholarships.

Este trabajo fue financiado por el Grupo de Investigación en Bio-Nanomateriales No201GI-CI-01, VIP Universidad Católica de Temuco y becas CONICYT-PCHA/Doctorado Nacional/2016-21160984.

10.1016/j.plaphy.2018.07.024

pdf

Photo catalysis# Oxidative stress# Photosystems# Electron transport chain

http://dx.doi.org/10.1016/j.plaphy.2018.07.024

Plant Sciences

Fotocatálisis# Estrés oxidativo# Fotosistemas# Cadena de transporte de electrones

Nanomateriales (Producción y Propiedades)

Biotecnología agrícola

Agricultura

WOS:000444789200040

Metallic nanoparticles influence the structure and function of the photosynthetic apparatus in plants

Artículo de revisión

version publicada

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER

PLANT PHYSIOLOGY AND BIOCHEMISTRY

Ciencias de las plantas

0981-9428

en

UCT#ANID CONICYT-PCHA/Doctorado Nacional/2016 21160984#Bio-Nanomaterials Research Group 201GI-CI-01

Bio-Nanomaterials Research Group 201GI-CI-01

UCT VIP

ANID CONICYT-PCHA/Doctorado Nacional 2016 21160984

This work was funded by the Bio-Nanomaterials Research Group No201GI-CI-01, VIP Universidad Catolica de Temuco and CONICYT-PCHA/Doctorado Nacional/2016-21160984 scholarships.

pdf

hibrida#verde

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