Growth-promoting gold nanoparticles decrease stress responses in arabidopsis seedlings
Ferrari, Eleonora (Universität Tübingen. Zentrum für Molekularbiologie der Pflanzen)
Barbero, Francesco (Institut Català de Nanociència i Nanotecnologia)
Busquets-Fité, Martí (Applied Nanoparticles. S.L.)
Franz-Wachtel, Mirita (c Proteom Centrum)
Köhler, Heinz-R. (Institut für Evolution und Ökologie. Institut für Evolution und Ökologie)
Puntes, Víctor (Institut Català de Nanociència i Nanotecnologia)
Kemmerling, Birgit (Universität Tübingen. Zentrum für Molekularbiologie der Pflanzen)

Data:	2021
Resum:	The global economic success of man-made nanoscale materials has led to a higher production rate and diversification of emission sources in the environment. For these reasons, novel nanosafety approaches to assess the environmental impact of engineered nanomaterials are required. While studying the potential toxicity of metal nanoparticles (NPs), we realized that gold nanoparticles (AuNPs) have a growth-promoting rather than a stress-inducing effect. In this study we established stable short-and long-term exposition systems for testing plant responses to NPs. Exposure of plants to moderate concentrations of AuNPs resulted in enhanced growth of the plants with longer primary roots, more and longer lateral roots and increased rosette diameter, and reduced oxidative stress responses elicited by the immune-stimulatory PAMP flg22. Our data did not reveal any detri-mental effects of AuNPs on plants but clearly showed positive effects on growth, presumably by their protective influence on oxidative stress responses. Differential transcriptomics and proteomics analyses revealed that oxidative stress responses are downregulated whereas growth-promoting genes/proteins are upregulated. These omics datasets after AuNP exposure can now be exploited to study the underlying molecular mechanisms of AuNP-induced growth-promotion.
Ajuts:	European Commission 671881
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Engineered nanomaterial ; Nanoparticle ; Gold nanoparticle ; Plant ; Arabidopsis thaliana ; Plant growth ; Stress response ; Transcriptomics ; Proteomics
Publicat a:	Nanomaterials, Vol. 11, issue 12 (Dec. 2021) , art. 3161, ISSN 2079-4991

DOI: 10.3390/nano11123161
PMID: 34947510

24 p, 2.6 MB

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