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dc.contributor.author
Viera Barreto, Jessica Noelia
dc.contributor.author
Sancho, Gisela
dc.contributor.author
Forte, Noelia Beatriz
dc.date.available
2018-08-09T15:27:52Z
dc.date.issued
2016-11
dc.identifier.citation
Viera Barreto, Jessica Noelia; Sancho, Gisela; Forte, Noelia Beatriz; On the presence of uncommon stylar glandular trichomes in asteraceae: A study in Kaunia R.M. King and H. ROB. (oxylobinae, eupatorieae); University of Chicago Press; International Journal of Plant Sciences; 177; 9; 11-2016; 760-770
dc.identifier.issn
1058-5893
dc.identifier.uri
http://hdl.handle.net/11336/54779
dc.description.abstract
Premise of research. Glands on the styles of Asteraceae are uncommon. They are reported in Kaunia for the first time. Glandular trichomes of plants are involved in the synthesis of secondary metabolites. In Kaunia, secondary compounds with medicinal cytotoxic, antitumor activity, and sensitizing capacity were previously identified. In this frame, a deeper knowledge of glandular trichomes could shed light on the productivity of medicinal substances in Kaunia. The potential taxonomic and ecological value of stylar glandular trichomes in Kaunia is also explored together with trichome secretion phases throughout the floral developmental stages. Methodology. Herbarium specimens and flowers fixed in FAA of 10 species of Kaunia were analyzed. Flowers in different developmental stages were studied to observe the secretory phases of stylar trichomes. A histochemical test was carried out to detect sesquiterpene lactones on stylar glandular trichomes. Pivotal results. Glandular trichomes were detected on the ventral face of style branches in eight species of Kaunia in all floral stages analyzed. The stylar trichomes observed were mostly found in secretory or early postsecretory phases in the most immature floral stages. The histochemical test in stylar trichomes was positive for sesquiterpene lactones. Conclusions. The presence of stylar glandular trichomes provides valuable new evidence for the identification and characterization of Kaunia. Within the Eupatorieae, the presence of stylar glandular trichomes could be interpreted as taxonomically valuable at the rank of genus. Our finding of sesquiterpene lactones is in agreement with the presence of Guaianolides and Germacranolides previously isolated in Kaunia. Apparently, the secretion of trichomes is completed before the opening of the corolla. The glands on styles of Kaunia could be the most internal barrier to herbivores that could flank outer floral structures during pollen and style development.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
University of Chicago Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Compositae
dc.subject
Morphology
dc.subject
Secretory Structures
dc.subject
Sesquiterpene Lactones
dc.subject
Style
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Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
On the presence of uncommon stylar glandular trichomes in asteraceae: A study in Kaunia R.M. King and H. ROB. (oxylobinae, eupatorieae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-08T16:37:08Z
dc.journal.volume
177
dc.journal.number
9
dc.journal.pagination
760-770
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Chicago
dc.description.fil
Fil: Viera Barreto, Jessica Noelia. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Sancho, Gisela. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Forte, Noelia Beatriz. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
International Journal of Plant Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1086/688709
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.journals.uchicago.edu/doi/10.1086/688709
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