Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861 |
Resumo: | This study analyzed the effects of UV-C radiation on the development of Rapanea ferruginea leaves. Young plants were selected at six months of age, previously identifying the leaves that had already differentiated on the 3rd, 4th, 6th 8th and 9th nodes. After the selection, the plants were divided into three groups and subjected to UV-C radiation for 30, 60 or 120 minutes. The anatomic study was made by using usual techniques of cut and coloration. The morphometric analyses were made by determining three points on the midvein of the leaf, measuring from left (L) and right (R) borders to each of those points. The symmetry deviations, maximum length and width of the limb were measured and the values were submitted to Anova and the Tukey-test (p < 0.05). The responses of R. ferruginea to the UV-C were expressed by variations in the symmetry as well as morphoanatomic injuries, mainly in the palisade parenchyma and mesophyll. The differentiation of leaves did not follow a morphometric pattern, characterizing no directional asymmetry, i.e., fluctuating asymmetry. This study emphasizes the importance of multiscale observations for the determination of plant responses under stress, since several leaves showed anatomic injuries but no morphologic injuries. |
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Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861Efeitos da radiação ultravioleta-C sobre a simetria e morfoanatomia foliar de Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) - DOI: 10.4025/actascibiolsci.v31i2.861stressultraviolet radiationleavessymmetry deviationscales of observationestresseradiação ultravioletafolhasdesvio de simetriaescalas de observaçãoBotânicaThis study analyzed the effects of UV-C radiation on the development of Rapanea ferruginea leaves. Young plants were selected at six months of age, previously identifying the leaves that had already differentiated on the 3rd, 4th, 6th 8th and 9th nodes. After the selection, the plants were divided into three groups and subjected to UV-C radiation for 30, 60 or 120 minutes. The anatomic study was made by using usual techniques of cut and coloration. The morphometric analyses were made by determining three points on the midvein of the leaf, measuring from left (L) and right (R) borders to each of those points. The symmetry deviations, maximum length and width of the limb were measured and the values were submitted to Anova and the Tukey-test (p < 0.05). The responses of R. ferruginea to the UV-C were expressed by variations in the symmetry as well as morphoanatomic injuries, mainly in the palisade parenchyma and mesophyll. The differentiation of leaves did not follow a morphometric pattern, characterizing no directional asymmetry, i.e., fluctuating asymmetry. This study emphasizes the importance of multiscale observations for the determination of plant responses under stress, since several leaves showed anatomic injuries but no morphologic injuries.Neste estudo, analisaram-se os efeitos da radiação UV-C sobre o desenvolvimento de folhas de Rapanea ferruginea. Plantas jovens foram selecionadas com seis meses de idade identificando-se as folhas já diferenciadas do 3º, 4º, 6º, 8º e 9º nó. Posteriormente, as plantas foram divididas em três grupos e submetidas à radiação UV-C por 30, 60 ou 120 min. seguidos. Para o estudo anatômico, foram utilizadas técnicas usuais de corte e coloração. As análises morfométricas foram realizadas determinando-se três pontos ao longo da nervura central da folha, medindo-se das bordas esquerda (E) e direita (D) até cada um desses pontos. Determinaram-se também os desvios de simetria, o comprimento e a largura máxima do limbo, submetendo os valores à Anova e ao teste de Tukey (p < 0,05). As respostas de R. ferruginea à UV-C foram expressas por variações na simetria, bem como por injúrias morfoanatômicas, sobretudo ao parênquima paliçádico e mesofilo. A diferenciação das folhas não seguiu um padrão morfométrico, caracterizando, assim, uma assimetria não-direcional, ou seja, flutuante. Este estudo ressalta a importância de observações multiescalares para a determinação de respostas de plantas ao estresse, já que algumas folhas apresentaram danos anatômicos, porém não morfológicos.Universidade Estadual De Maringá2009-05-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/86110.4025/actascibiolsci.v31i2.861Acta Scientiarum. Biological Sciences; Vol 31 No 2 (2009); 165-172Acta Scientiarum. Biological Sciences; v. 31 n. 2 (2009); 165-1721807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861/861Daloso, Danilo de MenezesHolsback-Menegucci, Zildamara dos ReisSantiago, Etenaldo Felipeinfo:eu-repo/semantics/openAccess2022-11-23T17:33:01Zoai:periodicos.uem.br/ojs:article/861Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:01Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 Efeitos da radiação ultravioleta-C sobre a simetria e morfoanatomia foliar de Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) - DOI: 10.4025/actascibiolsci.v31i2.861 |
title |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
spellingShingle |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 Daloso, Danilo de Menezes stress ultraviolet radiation leaves symmetry deviation scales of observation estresse radiação ultravioleta folhas desvio de simetria escalas de observação Botânica |
title_short |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
title_full |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
title_fullStr |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
title_full_unstemmed |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
title_sort |
Effects of ultraviolet-C radiation on symmetry and morphoanatomy of Rapanea ferruginea (Ruiz et. Pav) Mez. (Myrsinaceae) leaves - DOI: 10.4025/actascibiolsci.v31i2.861 |
author |
Daloso, Danilo de Menezes |
author_facet |
Daloso, Danilo de Menezes Holsback-Menegucci, Zildamara dos Reis Santiago, Etenaldo Felipe |
author_role |
author |
author2 |
Holsback-Menegucci, Zildamara dos Reis Santiago, Etenaldo Felipe |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Daloso, Danilo de Menezes Holsback-Menegucci, Zildamara dos Reis Santiago, Etenaldo Felipe |
dc.subject.por.fl_str_mv |
stress ultraviolet radiation leaves symmetry deviation scales of observation estresse radiação ultravioleta folhas desvio de simetria escalas de observação Botânica |
topic |
stress ultraviolet radiation leaves symmetry deviation scales of observation estresse radiação ultravioleta folhas desvio de simetria escalas de observação Botânica |
description |
This study analyzed the effects of UV-C radiation on the development of Rapanea ferruginea leaves. Young plants were selected at six months of age, previously identifying the leaves that had already differentiated on the 3rd, 4th, 6th 8th and 9th nodes. After the selection, the plants were divided into three groups and subjected to UV-C radiation for 30, 60 or 120 minutes. The anatomic study was made by using usual techniques of cut and coloration. The morphometric analyses were made by determining three points on the midvein of the leaf, measuring from left (L) and right (R) borders to each of those points. The symmetry deviations, maximum length and width of the limb were measured and the values were submitted to Anova and the Tukey-test (p < 0.05). The responses of R. ferruginea to the UV-C were expressed by variations in the symmetry as well as morphoanatomic injuries, mainly in the palisade parenchyma and mesophyll. The differentiation of leaves did not follow a morphometric pattern, characterizing no directional asymmetry, i.e., fluctuating asymmetry. This study emphasizes the importance of multiscale observations for the determination of plant responses under stress, since several leaves showed anatomic injuries but no morphologic injuries. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-05-14 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861 10.4025/actascibiolsci.v31i2.861 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861 |
identifier_str_mv |
10.4025/actascibiolsci.v31i2.861 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861/861 |
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 |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 31 No 2 (2009); 165-172 Acta Scientiarum. Biological Sciences; v. 31 n. 2 (2009); 165-172 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
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1799317390898495488 |