New insights into the properties of pubescent surfaces: Peach fruit as a model

dc.contributor.author	Fernandez, V	en
dc.contributor.author	Khayet, M	en
dc.contributor.author	Montero-Prado, P	en
dc.contributor.author	Heredia-Guerrero, J	en
dc.contributor.author	Liakopoulos, G	en
dc.contributor.author	Karabourniotis, G	en
dc.contributor.author	del Rio, V	en
dc.contributor.author	Dominguez, E	en
dc.contributor.author	Tacchini, I	en
dc.contributor.author	Nerin, C	en
dc.contributor.author	Val, J	en
dc.contributor.author	Heredia, A	en
dc.date.accessioned	2014-06-06T06:51:24Z
dc.date.available	2014-06-06T06:51:24Z
dc.date.issued	2011	en
dc.identifier.issn	00320889	en
dc.identifier.uri	http://dx.doi.org/10.1104/pp.111.176305	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5488
dc.subject.other	phenol derivative	en
dc.subject.other	water	en
dc.subject.other	adhesion	en
dc.subject.other	article	en
dc.subject.other	biological model	en
dc.subject.other	chemistry	en
dc.subject.other	cytology	en
dc.subject.other	dehydration	en
dc.subject.other	fruit	en
dc.subject.other	high performance liquid chromatography	en
dc.subject.other	histology	en
dc.subject.other	infrared spectroscopy	en
dc.subject.other	metabolism	en
dc.subject.other	plant epidermis	en
dc.subject.other	Prunus	en
dc.subject.other	surface property	en
dc.subject.other	thermodynamics	en
dc.subject.other	ultrastructure	en
dc.subject.other	Adhesiveness	en
dc.subject.other	Chromatography, High Pressure Liquid	en
dc.subject.other	Dehydration	en
dc.subject.other	Fruit	en
dc.subject.other	Models, Biological	en
dc.subject.other	Phenols	en
dc.subject.other	Plant Epidermis	en
dc.subject.other	Prunus	en
dc.subject.other	Spectroscopy, Fourier Transform Infrared	en
dc.subject.other	Surface Properties	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Water	en
dc.subject.other	Prunus persica	en
dc.title	New insights into the properties of pubescent surfaces: Peach fruit as a model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1104/pp.111.176305	en
heal.publicationDate	2011	en
heal.abstract	The surface of peach (Prunus persica 'Calrico') is covered by a dense indumentum, which may serve various protective purposes. With the aim of relating structure to function, the chemical composition, morphology, and hydrophobicity of the peach skin was assessed as a model for a pubescent plant surface. Distinct physicochemical features were observed for trichomes versus isolated cuticles. Peach cuticles were composed of 53% cutan, 27% waxes, 23% cutin, and 1% hydroxycinnamic acid derivatives (mainly ferulic and p-coumaric acids). Trichomes were covered by a thin cuticular layer containing 15% waxes and 19% cutin and were filled by polysaccharide material (63%) containing hydroxycinnamic acid derivatives and flavonoids. The surface free energy, polarity, and work of adhesion of intact and shaved peach surfaces were calculated from contact angle measurements of water, glycerol, and diiodomethane. The removal of the trichomes from the surface increased polarity from 3.8% (intact surface) to 23.6% and decreased the total surface free energy chiefly due to a decrease on its nonpolar component. The extraction of waxes and the removal of trichomes led to higher fruit dehydration rates. However, trichomes were found to have a higher water sorption capacity as compared with isolated cuticles. The results show that the peach surface is composed of two different materials that establish a polarity gradient: the trichome network, which has a higher surface free energy and a higher dispersive component, and the cuticle underneath, which has a lower surface free energy and higher surface polarity. The significance of the data concerning water-plant surface interactions is discussed within a physiological context. © 2011 American Society of Plant Biologists.	en
heal.journalName	Plant Physiology	en
dc.identifier.issue	4	en
dc.identifier.volume	156	en
dc.identifier.doi	10.1104/pp.111.176305	en
dc.identifier.spage	2098	en
dc.identifier.epage	2108	en