Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/42333 |
Resumo: | To verify the influence of altitude on the anatomical structure of leaves and the secondary xylem of branches of individuals of the species Clethra scabra Pers. (Clethraceae) occurring in the Serra da Mantiqueira, state of Minas Gerais, samples were collected at altitudes of 1500, 1700, 1900 and 2100 m (meters). The collected leaves and branches were fixed and prepared following usual plant microtechnical procedures. Quantitative anatomical analyzes were performed using image analysis software. The leaves of C. scabra are hypoestomatic with triseriate epidermis and stellate trichomes, dorsiventral mesophyll, palisade parenchyma with one to two cell layers and the spongeous parenchyma with four. The central rib with developed xylem and the vascular bundle involved by the sclerenchyma sheath. Analysis of variance (ANOVA) and Scott-Knott test demonstrated that the thickness of the leaf blade, mesophyll and palisade parenchyma did not present statistically significant differences between the evaluated altitudes. The secondary xylem showed a decrease in the length of the vessel elements with increasing altitude at the 2100 m elevation and the tangential diameter of the vessel elements increased at the two lowest altitudes and then reduced. The Carlquist and the mesomorphic vulnerability indices decreased along the altitudinal gradient. Fiber length and diameter decreased with increasing altitude. Thus, altitude influences the anatomical changes presented by leaves and branches of C. scabra, which can be related to its phenotypic plasticity in response to different environmental conditions. |
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Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, BrazilAnatomia comparada de Clethra scabra Pers. (Clethraceae) em diferentes altitudes na Serra da Mantiqueira, Minas Gerais, BrasilCarne-de-vacaNebular forestMesophyllSecondary xylemCarne-de-vacaFloresta nebularMesofiloXilema secundárioTo verify the influence of altitude on the anatomical structure of leaves and the secondary xylem of branches of individuals of the species Clethra scabra Pers. (Clethraceae) occurring in the Serra da Mantiqueira, state of Minas Gerais, samples were collected at altitudes of 1500, 1700, 1900 and 2100 m (meters). The collected leaves and branches were fixed and prepared following usual plant microtechnical procedures. Quantitative anatomical analyzes were performed using image analysis software. The leaves of C. scabra are hypoestomatic with triseriate epidermis and stellate trichomes, dorsiventral mesophyll, palisade parenchyma with one to two cell layers and the spongeous parenchyma with four. The central rib with developed xylem and the vascular bundle involved by the sclerenchyma sheath. Analysis of variance (ANOVA) and Scott-Knott test demonstrated that the thickness of the leaf blade, mesophyll and palisade parenchyma did not present statistically significant differences between the evaluated altitudes. The secondary xylem showed a decrease in the length of the vessel elements with increasing altitude at the 2100 m elevation and the tangential diameter of the vessel elements increased at the two lowest altitudes and then reduced. The Carlquist and the mesomorphic vulnerability indices decreased along the altitudinal gradient. Fiber length and diameter decreased with increasing altitude. Thus, altitude influences the anatomical changes presented by leaves and branches of C. scabra, which can be related to its phenotypic plasticity in response to different environmental conditions.Para verificar a influência da altitude na estrutura anatômica de folhas e do xilema secundário de galhos de indivíduos da espécie Clethra scabra Pers. (Clethraceae) ocorrentes na Serra da Mantiqueira, estado de Minas Gerais, realizaram-se coletas de amostras nas cotas altitudinais de 1500, 1700, 1900 e 2100 m (metros). As folhas e galhos coletados foram fixados e preparados seguindo procedimentos usuais de microtécnica vegetal. Procederam-se análises anatômicas quantitativas utilizando software de análise de imagem. As folhas de C. scabra são hipoestomáticas com epiderme trisseriada e tricomas estrelados, mesofilo dorsiventral, parênquima paliçádico com uma a duas camadas celulares e o parênquima esponjoso com quatro. A nervura central com xilema desenvolvido e o feixe vascular envolvido pela bainha esclerenquimática. Análises de variância (ANOVA) e teste de Scott-Knott demonstraram que as espessuras do limbo foliar, mesofilo e parênquima paliçádico não apresentaram diferenças estatísticas significativas entre as altitudes avaliadas. O xilema secundário apresentou diminuição no comprimento dos elementos de vaso com o aumento da altitude na cota de 2100 m e o diâmetro tangencial dos elementos de vaso aumentaram nas duas menores altitudes e depois reduziram. Índices de vulnerabilidade de Carlquist e de mesomorfia diminuíram ao longo do gradiente altitudinal. Comprimento e diâmetro das fibras diminuíram com elevação da altitude. Assim, a altitude influencia nas modificações anatômicas apresentadas por folhas e galhos de C. scabra, que podem ser relacionadas a sua plasticidade fenotípica em resposta às diferentes condições ambientais.Universidade Federal de Santa Maria2021-09-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://periodicos.ufsm.br/cienciaflorestal/article/view/4233310.5902/1980509842333Ciência Florestal; Vol. 31 No. 3 (2021); 1407-1426Ciência Florestal; v. 31 n. 3 (2021); 1407-14261980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/42333/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/42333/htmlCopyright (c) 2021 Ciência Florestalinfo:eu-repo/semantics/openAccessSantos, Maria LuizaRibeiro, Alessandra de OliveiraCastro, Evaristo Mauro deMiranda, Kaline FernandesLira, Marinês Ferreira PiresPereira, Márcio PauloFerreira, Cassiana AlvesMori, Fabio Akira2021-09-06T21:13:38Zoai:ojs.pkp.sfu.ca:article/42333Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2021-09-06T21:13:38Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil Anatomia comparada de Clethra scabra Pers. (Clethraceae) em diferentes altitudes na Serra da Mantiqueira, Minas Gerais, Brasil |
title |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
spellingShingle |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil Santos, Maria Luiza Carne-de-vaca Nebular forest Mesophyll Secondary xylem Carne-de-vaca Floresta nebular Mesofilo Xilema secundário |
title_short |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
title_full |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
title_fullStr |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
title_full_unstemmed |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
title_sort |
Comparative anatomy of Clethra scabra Pers. (Clethraceae) in different altitudes in Serra da Mantiqueira, Minas Gerais state, Brazil |
author |
Santos, Maria Luiza |
author_facet |
Santos, Maria Luiza Ribeiro, Alessandra de Oliveira Castro, Evaristo Mauro de Miranda, Kaline Fernandes Lira, Marinês Ferreira Pires Pereira, Márcio Paulo Ferreira, Cassiana Alves Mori, Fabio Akira |
author_role |
author |
author2 |
Ribeiro, Alessandra de Oliveira Castro, Evaristo Mauro de Miranda, Kaline Fernandes Lira, Marinês Ferreira Pires Pereira, Márcio Paulo Ferreira, Cassiana Alves Mori, Fabio Akira |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Maria Luiza Ribeiro, Alessandra de Oliveira Castro, Evaristo Mauro de Miranda, Kaline Fernandes Lira, Marinês Ferreira Pires Pereira, Márcio Paulo Ferreira, Cassiana Alves Mori, Fabio Akira |
dc.subject.por.fl_str_mv |
Carne-de-vaca Nebular forest Mesophyll Secondary xylem Carne-de-vaca Floresta nebular Mesofilo Xilema secundário |
topic |
Carne-de-vaca Nebular forest Mesophyll Secondary xylem Carne-de-vaca Floresta nebular Mesofilo Xilema secundário |
description |
To verify the influence of altitude on the anatomical structure of leaves and the secondary xylem of branches of individuals of the species Clethra scabra Pers. (Clethraceae) occurring in the Serra da Mantiqueira, state of Minas Gerais, samples were collected at altitudes of 1500, 1700, 1900 and 2100 m (meters). The collected leaves and branches were fixed and prepared following usual plant microtechnical procedures. Quantitative anatomical analyzes were performed using image analysis software. The leaves of C. scabra are hypoestomatic with triseriate epidermis and stellate trichomes, dorsiventral mesophyll, palisade parenchyma with one to two cell layers and the spongeous parenchyma with four. The central rib with developed xylem and the vascular bundle involved by the sclerenchyma sheath. Analysis of variance (ANOVA) and Scott-Knott test demonstrated that the thickness of the leaf blade, mesophyll and palisade parenchyma did not present statistically significant differences between the evaluated altitudes. The secondary xylem showed a decrease in the length of the vessel elements with increasing altitude at the 2100 m elevation and the tangential diameter of the vessel elements increased at the two lowest altitudes and then reduced. The Carlquist and the mesomorphic vulnerability indices decreased along the altitudinal gradient. Fiber length and diameter decreased with increasing altitude. Thus, altitude influences the anatomical changes presented by leaves and branches of C. scabra, which can be related to its phenotypic plasticity in response to different environmental conditions. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/42333 10.5902/1980509842333 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/42333 |
identifier_str_mv |
10.5902/1980509842333 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/42333/pdf https://periodicos.ufsm.br/cienciaflorestal/article/view/42333/html |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Ciência Florestal |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 31 No. 3 (2021); 1407-1426 Ciência Florestal; v. 31 n. 3 (2021); 1407-1426 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
_version_ |
1799944135257358336 |