Enhancing Localized Pesticide Action through Plant Foliage by Silver-Cellulose Hybrid Patches
Alonso-Díaz, Alejandro (Centre de Recerca en Agrigenòmica)
Floriach Clark, Jordi (Institut de Ciència de Materials de Barcelona)
Fuentes Lazaro, Judit (Institut de Ciència de Materials de Barcelona)
Capellades, Montserrat (Centre de Recerca en Agrigenòmica)
Sánchez Coll, Núria (Centre de Recerca en Agrigenòmica)
Laromaine, Anna (Institut de Ciència de Materials de Barcelona)

Fecha:	2019
Resumen:	Efficacy and efficiency of pesticide application in the field through the foliage still face many challenges. There exists a mismatch between the hydrophobic character of the leaf and the active molecule, low dispersion of the pesticides on the leaves' surface, runoff loss, and rolling down of the active molecules to the field, decreasing their efficacy and increasing their accumulation to the soil. We produced bacterial cellulose-silver nanoparticles (BC-AgNPs) hybrid patches by in situ thermal reduction under microwave irradiation in a scalable manner and obtaining AgNPs strongly anchored to the BC. Those hybrids increase the interaction of the pesticide (AgNPs) with the foliage and avoids runoff loss and rolling down of the nanoparticles. The positive antibacterial and antifungal properties were assessed in vitro against the bacteria Escherichia coli and two agro-economically relevant pathogens: the bacterium Pseudomonas syringae and the fungus Botrytis cinerea. We showed in vivo inhibition of the infection in Nicotiana benthamiana and tomato leaves, as proven by the suppression of the expression of defense molecular markers and reactive oxygen species production. The hydrogel-like character of the bacterial cellulose matrix increases the adherence to the foliage of the patches.
Ayudas:	Ministerio de Economía y Competitividad AGL2016-78002-R Ministerio de Economía y Competitividad RyC-2014-16158 Ministerio de Economía y Competitividad MAT2015-64442-R Ministerio de Economía y Competitividad SEV-2015-0533 Ministerio de Economía y Competitividad SEV-2015-0496 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-765
Derechos:	Tots els drets reservats.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió acceptada per publicar
Materia:	Bacterial cellulose ; Silver nanoparticles ; Preventing infection ; Nicotiana benthamiana ; Pseudomonas
Publicado en:	ACS biomaterials science & engineering, Vol. 5, Issue 2 (February 2019) , p. 413-419, ISSN 2373-9878

DOI: 10.1021/acsbiomaterials.8b01171

Postprint 18 p, 1016.4 KB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > CRAG (Centro de Investigación en Agrigenómica)
Artículos > Artículos de investigación
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