Estimation of the solubility parameters of model plant surfaces and agrochemicals: a valuable tool for understanding plant surface interactions

Khayet, Mohamed y Fernandez Fernandez, Victoria (2012). Estimation of the solubility parameters of model plant surfaces and agrochemicals: a valuable tool for understanding plant surface interactions. "Theoretical Biology and Medical Modelling", v. 9 (n. 45); pp. 1-21. https://doi.org/10.1186/1742-4682-9-45.

Descripción

Título: Estimation of the solubility parameters of model plant surfaces and agrochemicals: a valuable tool for understanding plant surface interactions
Autor/es:
  • Khayet, Mohamed
  • Fernandez Fernandez, Victoria
Tipo de Documento: Artículo
Título de Revista/Publicación: Theoretical Biology and Medical Modelling
Fecha: 14 Noviembre 2012
Volumen: 9
Materias:
Palabras Clave Informales: Agro-chemicals, Cuticle, Plant surfaces, Solubility parameter, Waxes.
Escuela: E.T.S.I. Montes (UPM) [antigua denominación]
Departamento: Silvopascicultura [hasta 2014]
Licencias Creative Commons: Ninguna

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Resumen

Background Most aerial plant parts are covered with a hydrophobic lipid-rich cuticle, which is the interface between the plant organs and the surrounding environment. Plant surfaces may have a high degree of hydrophobicity because of the combined effects of surface chemistry and roughness. The physical and chemical complexity of the plant cuticle limits the development of models that explain its internal structure and interactions with surface-applied agrochemicals. In this article we introduce a thermodynamic method for estimating the solubilities of model plant surface constituents and relating them to the effects of agrochemicals. Results Following the van Krevelen and Hoftyzer method, we calculated the solubility parameters of three model plant species and eight compounds that differ in hydrophobicity and polarity. In addition, intact tissues were examined by scanning electron microscopy and the surface free energy, polarity, solubility parameter and work of adhesion of each were calculated from contact angle measurements of three liquids with different polarities. By comparing the affinities between plant surface constituents and agrochemicals derived from (a) theoretical calculations and (b) contact angle measurements we were able to distinguish the physical effect of surface roughness from the effect of the chemical nature of the epicuticular waxes. A solubility parameter model for plant surfaces is proposed on the basis of an increasing gradient from the cuticular surface towards the underlying cell wall. Conclusions The procedure enabled us to predict the interactions among agrochemicals, plant surfaces, and cuticular and cell wall components, and promises to be a useful tool for improving our understanding of biological surface interactions.

Más información

ID de Registro: 14656
Identificador DC: http://oa.upm.es/14656/
Identificador OAI: oai:oa.upm.es:14656
Identificador DOI: 10.1186/1742-4682-9-45
URL Oficial: http://www.tbiomed.com/content/9/1/45
Depositado por: Victoria Fernández
Depositado el: 19 Mar 2013 07:39
Ultima Modificación: 21 Abr 2016 14:25
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