Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae)
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/14490 |
Resumo: | Most of the studies on Hypericum genus deals with the phytochemical and pharmacological properties and the morphoanatomical data are scarce, although sometimes some species are poorly identified. In order to obtain differentiating phytognostic characters, the micromorphological, anatomical and histochemical study of mature leaves of six Hypericum species, H. androsaemum, H. calycinum, H. canariense, H. grandifolium, H. x inodorum and H. patulum, was carried out using different techniques of microscopy. Qualitative characters of both epidermal surfaces were evaluated: cell shape, cell wall, epicuticular deposits and stomata type. Only the last three characters showed some kind of differences. Five qualitative characters, stomata and gland indexes, total mesophyll thickness, palisade parenchyma and spongy parenchyma thickness, were subjected to analysis of variance on one factor ANOVA. Differences were found in the stomata and gland indexes as well as in the parenchyma cells arrangement and thickness. Histochemical tests were performed to localize and identify chemical groups of metabolites and the differences found were semi-quantitative. We conclude that the most important leaf phytognostic characters are: the epidermal cells shape, the type and distribution of stomata, the glands distribution and the mesophyll features |
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Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae)Hypericummicromorphologyanatomyleaf epidermal surfacemesophyllMost of the studies on Hypericum genus deals with the phytochemical and pharmacological properties and the morphoanatomical data are scarce, although sometimes some species are poorly identified. In order to obtain differentiating phytognostic characters, the micromorphological, anatomical and histochemical study of mature leaves of six Hypericum species, H. androsaemum, H. calycinum, H. canariense, H. grandifolium, H. x inodorum and H. patulum, was carried out using different techniques of microscopy. Qualitative characters of both epidermal surfaces were evaluated: cell shape, cell wall, epicuticular deposits and stomata type. Only the last three characters showed some kind of differences. Five qualitative characters, stomata and gland indexes, total mesophyll thickness, palisade parenchyma and spongy parenchyma thickness, were subjected to analysis of variance on one factor ANOVA. Differences were found in the stomata and gland indexes as well as in the parenchyma cells arrangement and thickness. Histochemical tests were performed to localize and identify chemical groups of metabolites and the differences found were semi-quantitative. We conclude that the most important leaf phytognostic characters are: the epidermal cells shape, the type and distribution of stomata, the glands distribution and the mesophyll featuresRAJARRepositório da Universidade de LisboaTeixeira, GenerosaMonteiro, Ana2017-12-19T09:48:58Z2017-122017-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/14490engRAJAR Volume 3 Issue 12 December 20172394-670910.18535/rajar/v3i12.07info: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:RCAAP2023-03-06T14:44:32Zoai:www.repository.utl.pt:10400.5/14490Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:00:18.446261Repositório 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 |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
title |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
spellingShingle |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) Teixeira, Generosa Hypericum micromorphology anatomy leaf epidermal surface mesophyll |
title_short |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
title_full |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
title_fullStr |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
title_full_unstemmed |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
title_sort |
Leaf phytognostic characters of six species of Hypericum L. (Hypericaceae) |
author |
Teixeira, Generosa |
author_facet |
Teixeira, Generosa Monteiro, Ana |
author_role |
author |
author2 |
Monteiro, Ana |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Teixeira, Generosa Monteiro, Ana |
dc.subject.por.fl_str_mv |
Hypericum micromorphology anatomy leaf epidermal surface mesophyll |
topic |
Hypericum micromorphology anatomy leaf epidermal surface mesophyll |
description |
Most of the studies on Hypericum genus deals with the phytochemical and pharmacological properties and the morphoanatomical data are scarce, although sometimes some species are poorly identified. In order to obtain differentiating phytognostic characters, the micromorphological, anatomical and histochemical study of mature leaves of six Hypericum species, H. androsaemum, H. calycinum, H. canariense, H. grandifolium, H. x inodorum and H. patulum, was carried out using different techniques of microscopy. Qualitative characters of both epidermal surfaces were evaluated: cell shape, cell wall, epicuticular deposits and stomata type. Only the last three characters showed some kind of differences. Five qualitative characters, stomata and gland indexes, total mesophyll thickness, palisade parenchyma and spongy parenchyma thickness, were subjected to analysis of variance on one factor ANOVA. Differences were found in the stomata and gland indexes as well as in the parenchyma cells arrangement and thickness. Histochemical tests were performed to localize and identify chemical groups of metabolites and the differences found were semi-quantitative. We conclude that the most important leaf phytognostic characters are: the epidermal cells shape, the type and distribution of stomata, the glands distribution and the mesophyll features |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-12-19T09:48:58Z 2017-12 2017-12-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/14490 |
url |
http://hdl.handle.net/10400.5/14490 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
RAJAR Volume 3 Issue 12 December 2017 2394-6709 10.18535/rajar/v3i12.07 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
RAJAR |
publisher.none.fl_str_mv |
RAJAR |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799131090638602240 |