Micromorphology of trichomes and composition of essential oil of Teucrium capitatum

Detalhes bibliográficos
Autor(a) principal: Antunes, Teresa
Data de Publicação: 2004
Outros Autores: Sevinate-Pinto, Isabel, Barroso, José G., Cavaleiro, Carlos, Salgueiro, Lígia R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/8380
https://doi.org/10.1002/ffj.1310
Resumo: The morphology and distribution of the glandular trichomes of Teucrium capitatum L., as well as the chemical composition of the essential oils, were studied. Important differences were found with regard to the major constituents of the essential oils of five populations of T. capitatum grown in Portugal. The oil isolated from one population was characterized by a high content of oxygenated monoterpenes (33.0%), isomenthone (7.7%) being the major constituent. Another oil from a population collected from the same region was dominated by monoterpene and sesquiterpene hydrocarbons (43.9% and 23.2%, respectively), alpha-pinene (7.7%), sabinene (11.2%) and beta-pinene (10.3%) being the main compounds. The oils from the other three populations were characterized by a high content of both sesquiterpene hydrocarbons (23.0%, 32.2% and 33.2%) and oxygenated sesquiterpenes (39.7%, 23.4% and 20.4%). T-cadinol (24.1%) and alpha-cadinol (9.8%) were the major compounds in the oil from one population, whereas delta-cadinene (7.5% and 9.8%) and E-caryophyllene (5.4%) or alpha-muurolol (6.0%) were the major constituents in the other samples. The indumentum of the vegetative and reproductive ograns from the five populations of T. capitatum, observed under scanning electron microscopy, showed the same type and distribution of glandular and non-glandular trichomes. Since the ecological and edaphic features of the collecting sites were quite similar, the chemical polymorphism observed seems to be due to genetic factors. Copyright © 2004 John Wiley & Sons, Ltd.
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spelling Micromorphology of trichomes and composition of essential oil of Teucrium capitatumThe morphology and distribution of the glandular trichomes of Teucrium capitatum L., as well as the chemical composition of the essential oils, were studied. Important differences were found with regard to the major constituents of the essential oils of five populations of T. capitatum grown in Portugal. The oil isolated from one population was characterized by a high content of oxygenated monoterpenes (33.0%), isomenthone (7.7%) being the major constituent. Another oil from a population collected from the same region was dominated by monoterpene and sesquiterpene hydrocarbons (43.9% and 23.2%, respectively), alpha-pinene (7.7%), sabinene (11.2%) and beta-pinene (10.3%) being the main compounds. The oils from the other three populations were characterized by a high content of both sesquiterpene hydrocarbons (23.0%, 32.2% and 33.2%) and oxygenated sesquiterpenes (39.7%, 23.4% and 20.4%). T-cadinol (24.1%) and alpha-cadinol (9.8%) were the major compounds in the oil from one population, whereas delta-cadinene (7.5% and 9.8%) and E-caryophyllene (5.4%) or alpha-muurolol (6.0%) were the major constituents in the other samples. The indumentum of the vegetative and reproductive ograns from the five populations of T. capitatum, observed under scanning electron microscopy, showed the same type and distribution of glandular and non-glandular trichomes. Since the ecological and edaphic features of the collecting sites were quite similar, the chemical polymorphism observed seems to be due to genetic factors. Copyright © 2004 John Wiley & Sons, Ltd.2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8380http://hdl.handle.net/10316/8380https://doi.org/10.1002/ffj.1310engFlavour and Fragrance Journal. 19:4 (2004) 336-340Antunes, TeresaSevinate-Pinto, IsabelBarroso, José G.Cavaleiro, CarlosSalgueiro, Lígia R.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-10-21T08:13:11Zoai:estudogeral.uc.pt:10316/8380Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:47:20.818968Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
title Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
spellingShingle Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
Antunes, Teresa
title_short Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
title_full Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
title_fullStr Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
title_full_unstemmed Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
title_sort Micromorphology of trichomes and composition of essential oil of Teucrium capitatum
author Antunes, Teresa
author_facet Antunes, Teresa
Sevinate-Pinto, Isabel
Barroso, José G.
Cavaleiro, Carlos
Salgueiro, Lígia R.
author_role author
author2 Sevinate-Pinto, Isabel
Barroso, José G.
Cavaleiro, Carlos
Salgueiro, Lígia R.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Antunes, Teresa
Sevinate-Pinto, Isabel
Barroso, José G.
Cavaleiro, Carlos
Salgueiro, Lígia R.
description The morphology and distribution of the glandular trichomes of Teucrium capitatum L., as well as the chemical composition of the essential oils, were studied. Important differences were found with regard to the major constituents of the essential oils of five populations of T. capitatum grown in Portugal. The oil isolated from one population was characterized by a high content of oxygenated monoterpenes (33.0%), isomenthone (7.7%) being the major constituent. Another oil from a population collected from the same region was dominated by monoterpene and sesquiterpene hydrocarbons (43.9% and 23.2%, respectively), alpha-pinene (7.7%), sabinene (11.2%) and beta-pinene (10.3%) being the main compounds. The oils from the other three populations were characterized by a high content of both sesquiterpene hydrocarbons (23.0%, 32.2% and 33.2%) and oxygenated sesquiterpenes (39.7%, 23.4% and 20.4%). T-cadinol (24.1%) and alpha-cadinol (9.8%) were the major compounds in the oil from one population, whereas delta-cadinene (7.5% and 9.8%) and E-caryophyllene (5.4%) or alpha-muurolol (6.0%) were the major constituents in the other samples. The indumentum of the vegetative and reproductive ograns from the five populations of T. capitatum, observed under scanning electron microscopy, showed the same type and distribution of glandular and non-glandular trichomes. Since the ecological and edaphic features of the collecting sites were quite similar, the chemical polymorphism observed seems to be due to genetic factors. Copyright © 2004 John Wiley & Sons, Ltd.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/8380
http://hdl.handle.net/10316/8380
https://doi.org/10.1002/ffj.1310
url http://hdl.handle.net/10316/8380
https://doi.org/10.1002/ffj.1310
dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv Flavour and Fragrance Journal. 19:4 (2004) 336-340
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