Volatiles and Nonvolatiles in Flourensia campestris Griseb. (Asteraceae), How Much Do Capitate Glandular Trichomes Matter?
| Autor: | Marisa Juana Lopez Rivilli, Daniela Griselda López, G. Mónica Tourn, Leonardo A Piazza, Ana Leonor Scopel, Mariana Paola Silva, Juan Jose Cantero |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Flourensia Bioengineering Asteraceae 01 natural sciences Biochemistry GLYCINE BETAINE Ciencias Biológicas 03 medical and health sciences Botany Oils Volatile Molecular Biology biology Molecular Structure Chemistry General Chemistry General Medicine Trichomes (–)-HAMANASIC ACID A biology.organism_classification Trichome 4-HYDROXYACETOPHENONE Plant Leaves 030104 developmental biology 2-HYDROXY-5-METHOXYACETOPHENONE ESSENTIAL OILS Molecular Medicine Otros Tópicos Biológicos CIENCIAS NATURALES Y EXACTAS 010606 plant biology & botany |
| DOI: | 10.1002/cbdv.201700511 |
| Popis: | 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. Fil: Piazza, Leonardo A. Universidad de Buenos Aires. Facultad de Agronomia. Sede Polo Universitario Punilla Centro; Argentina Fil: López, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Grupo Vinculado Centro de Estudios de Biodiversidad y Biotecnología MdP- INBA; Argentina Fil: Silva, Mariana Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Grupo Vinculado Centro de Estudios de Biodiversidad y Biotecnología MdP- INBA; Argentina Fil: Lopez Rivilli, Marisa Juana. Universidad de Buenos Aires. Facultad de Agronomia. Sede Polo Universitario Punilla Centro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Tourn, G. Mónica. Universidad de Buenos Aires. Facultad de Agronomia. Sede Polo Universitario Punilla Centro; Argentina Fil: Cantero, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Scopel, Ana Leonor. Universidad de Buenos Aires. Facultad de Agronomia. Sede Polo Universitario Punilla Centro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Grupo Vinculado Centro de Estudios de Biodiversidad y Biotecnología MdP- INBA; Argentina |
| Databáze: | OpenAIRE |
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