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Artículo

Volatiles and Nonvolatiles in Flourensia campestris Griseb. (Asteraceae), How Much Do Capitate Glandular Trichomes Matter?

Piazza, Leonardo A; López, Daniela; Silva, Mariana PaolaIcon ; Lopez Rivilli, Marisa JuanaIcon ; Tourn, G. Mónica; Cantero, Juan Jose; Scopel, Ana LeonorIcon
Fecha de publicación: 03/2018
Editorial: Wiley VCH Verlag
Revista: Chemistry and Biodiversity
ISSN: 1612-1872
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otros Tópicos Biológicos

Resumen

The distribution and ultrastructure of capitate glandular trichomes (GTs) in Flourensia species (Asteraceae) have been recently elucidated, but their metabolic activity and potential biological function remain unexplored. Selective nonvolatile metabolites from isolated GTs were strikingly similar to those found on leaf surfaces. The phytotoxic allelochemical sesquiterpene (–)-hamanasic acid A ((–)-HAA) was the major constituent (ca. 40%) in GTs. Although GTs are quaternary ammonium compounds (QACs)-accumulating species, glycine betaine was not found in GTs; it was only present in the leaf mesophyll. Two (–)-HAA accompanying surface secreted products: compounds 4-hydroxyacetophenone (piceol; 1) and 2-hydroxy-5-methoxyacetophenone (2), which were isolated and fully characterized (GC/MS, NMR), were present in the volatiles found in GTs. The essential oils of fresh leaves revealed ca. 33% monoterpenes, 26% hydrocarbon- and 30% oxygenated sesquiterpenes, most of them related to cadinene and bisabolene derivatives. Present results suggest a main role of GTs in determining the volatile and nonvolatile composition of F. campestris leaves. Based on the known activities of the compounds identified, it can be suggested that GTs in F. campestris would play key ecological functions in plant-pathogen and plant-plant interactions. In addition, the strikingly high contribution of compounds derived from cadinene and bisabolene pathways, highlights the potential of this species as a source of high-valued bioproducts.
Palabras clave: (–)-HAMANASIC ACID A , 2-HYDROXY-5-METHOXYACETOPHENONE , 4-HYDROXYACETOPHENONE , ESSENTIAL OILS , GLYCINE BETAINE
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/86485
DOI: http://dx.doi.org/10.1002/cbdv.201700511
URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/cbdv.201700511
Colecciones
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos(INBA)
Articulos de INST.DE INVEST. EN BIOCIENCIAS AGRICOLAS Y AMBIENTALES
Citación
Piazza, Leonardo A; López, Daniela; Silva, Mariana Paola; Lopez Rivilli, Marisa Juana; Tourn, G. Mónica; et al.; Volatiles and Nonvolatiles in Flourensia campestris Griseb. (Asteraceae), How Much Do Capitate Glandular Trichomes Matter?; Wiley VCH Verlag; Chemistry and Biodiversity; 15; 3; 3-2018; 1-15; e1700511
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