Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/29933 |
Resumo: | Fluorides released during the manufacture of aluminum, fertilizers, glass and ceramics are considered to be highly toxic to plants, causing damages in relatively small concentrations. This study aimed to evaluate fluoride (F) accumulation and its effects on Vitex polygama Cham. (Verbenaceae) exposed to simulated rain containing potassium fluoride in concentrations of 5, 10, 15 and 20 mg L-1. Vitex polygama presented no visual symptoms of foliar injury and accumulated a relatively small amount of F-, significant only for the treatments with higher concentrations of the pollutant. F- promoted an increase in non-photochemical quenching (qN) and in the coefficient due to non-photochemical extinction (NPQ), which indicates higher dissipation of radiant energy in the heat form. Damages in the chloroplast structure, in cellular membranes and in epicuticular waxes, besides cytoplasm granulation and irregularities in the epidermal cell walls were also detected in plants exposed to the pollutant. The results show a considerable resistance of Vitex polygama to F and reinforce the prognostic value of physiological, anatomical and ultrastructural analysis in the detection of damages caused by the pollutant in the leaf structure of this species. |
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Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluorideCaracterísticas ecofisiológicas, anatômicas e ultraestruturais de Vitex polygama Cham. (Verbenaceae) submetida a diferentes concentrações de flúorChlorophyll a fluorescencePotassium fluorideScanning electron microscopyTransmission electron microscopyBiomonitoringFluorescência da clorofila aFluoreto de potássioMicroscopia eletrônica de varreduraMicroscopia eletrônica de transmissãoBiomonitoramentoFluorides released during the manufacture of aluminum, fertilizers, glass and ceramics are considered to be highly toxic to plants, causing damages in relatively small concentrations. This study aimed to evaluate fluoride (F) accumulation and its effects on Vitex polygama Cham. (Verbenaceae) exposed to simulated rain containing potassium fluoride in concentrations of 5, 10, 15 and 20 mg L-1. Vitex polygama presented no visual symptoms of foliar injury and accumulated a relatively small amount of F-, significant only for the treatments with higher concentrations of the pollutant. F- promoted an increase in non-photochemical quenching (qN) and in the coefficient due to non-photochemical extinction (NPQ), which indicates higher dissipation of radiant energy in the heat form. Damages in the chloroplast structure, in cellular membranes and in epicuticular waxes, besides cytoplasm granulation and irregularities in the epidermal cell walls were also detected in plants exposed to the pollutant. The results show a considerable resistance of Vitex polygama to F and reinforce the prognostic value of physiological, anatomical and ultrastructural analysis in the detection of damages caused by the pollutant in the leaf structure of this species.Fluoretos, liberados durante a manufatura de alumínio, fertilizantes, vidro e cerâmica, são considerados altamente tóxicos para as plantas, causando danos em concentrações relativamente pequenas. Este estudo teve como finalidade avaliar o acúmulo de flúor (F) e seus efeitos sobre Vitex polygama Cham. (Verbenaceae) em plantas expostas a chuva simulada contendo fluoreto de potássio em concentrações de 5, 10, 15 e 20 mg L-1. Vitex polygama não apresentou sintomas visíveis de injúria foliar e acumulou uma quantidade relativamente pequena de F-, significativa apenas para os tratamentos com maiores concentrações do poluente. O F- promoveu aumentos no coeficiente devido à extinção não fotoquímica (qN) e no coeficiente devido à extinção não fotoquímica (NPQ), que indicam maior dissipação de energia radiante na forma de calor. Danos na estrutura dos cloroplastos, em membranas celulares e nas ceras epicuticulares, além de granulação do citoplasma e irregularidades na parede celular de células epidérmicas, foram também detectados em plantas expostas ao poluente. Os resultados demonstram uma considerável resistência de Vitex polygama ao F e reforçam o valor prognóstico de análises fisiológicas, anatômicas e ultraestruturais na detecção de danos causados pelo poluente na estrutura foliar dessa espécie.Universidade Estadual de Maringá (UEM)2018-08-09T19:47:57Z2018-08-09T19:47:57Z2016-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfROSSI, Z. T. T. et al. Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride. Acta Scientiarum. Biological Sciences, Maringá, v. 38, n. 4, p. 481-489, Oct./Dec. 2016.http://repositorio.ufla.br/jspui/handle/1/29933Acta Scientiarum. Biological Sciencesreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessRossi, Zélia Terezinha TeixeiraCastro, Evaristo Mauro dePereira, Giuslan CarvalhoBarbosa, João Paulo Rodrigues Alves DelfinoCarvalho, Graziele Wolff de AlmeidaRossi, Marco Aurélio de Lima SilvaPereira, Fabrício Joséeng2018-08-09T19:47:57Zoai:localhost:1/29933Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-08-09T19:47:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride Características ecofisiológicas, anatômicas e ultraestruturais de Vitex polygama Cham. (Verbenaceae) submetida a diferentes concentrações de flúor |
title |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
spellingShingle |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride Rossi, Zélia Terezinha Teixeira Chlorophyll a fluorescence Potassium fluoride Scanning electron microscopy Transmission electron microscopy Biomonitoring Fluorescência da clorofila a Fluoreto de potássio Microscopia eletrônica de varredura Microscopia eletrônica de transmissão Biomonitoramento |
title_short |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
title_full |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
title_fullStr |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
title_full_unstemmed |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
title_sort |
Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride |
author |
Rossi, Zélia Terezinha Teixeira |
author_facet |
Rossi, Zélia Terezinha Teixeira Castro, Evaristo Mauro de Pereira, Giuslan Carvalho Barbosa, João Paulo Rodrigues Alves Delfino Carvalho, Graziele Wolff de Almeida Rossi, Marco Aurélio de Lima Silva Pereira, Fabrício José |
author_role |
author |
author2 |
Castro, Evaristo Mauro de Pereira, Giuslan Carvalho Barbosa, João Paulo Rodrigues Alves Delfino Carvalho, Graziele Wolff de Almeida Rossi, Marco Aurélio de Lima Silva Pereira, Fabrício José |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Rossi, Zélia Terezinha Teixeira Castro, Evaristo Mauro de Pereira, Giuslan Carvalho Barbosa, João Paulo Rodrigues Alves Delfino Carvalho, Graziele Wolff de Almeida Rossi, Marco Aurélio de Lima Silva Pereira, Fabrício José |
dc.subject.por.fl_str_mv |
Chlorophyll a fluorescence Potassium fluoride Scanning electron microscopy Transmission electron microscopy Biomonitoring Fluorescência da clorofila a Fluoreto de potássio Microscopia eletrônica de varredura Microscopia eletrônica de transmissão Biomonitoramento |
topic |
Chlorophyll a fluorescence Potassium fluoride Scanning electron microscopy Transmission electron microscopy Biomonitoring Fluorescência da clorofila a Fluoreto de potássio Microscopia eletrônica de varredura Microscopia eletrônica de transmissão Biomonitoramento |
description |
Fluorides released during the manufacture of aluminum, fertilizers, glass and ceramics are considered to be highly toxic to plants, causing damages in relatively small concentrations. This study aimed to evaluate fluoride (F) accumulation and its effects on Vitex polygama Cham. (Verbenaceae) exposed to simulated rain containing potassium fluoride in concentrations of 5, 10, 15 and 20 mg L-1. Vitex polygama presented no visual symptoms of foliar injury and accumulated a relatively small amount of F-, significant only for the treatments with higher concentrations of the pollutant. F- promoted an increase in non-photochemical quenching (qN) and in the coefficient due to non-photochemical extinction (NPQ), which indicates higher dissipation of radiant energy in the heat form. Damages in the chloroplast structure, in cellular membranes and in epicuticular waxes, besides cytoplasm granulation and irregularities in the epidermal cell walls were also detected in plants exposed to the pollutant. The results show a considerable resistance of Vitex polygama to F and reinforce the prognostic value of physiological, anatomical and ultrastructural analysis in the detection of damages caused by the pollutant in the leaf structure of this species. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12 2018-08-09T19:47:57Z 2018-08-09T19:47:57Z |
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 |
ROSSI, Z. T. T. et al. Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride. Acta Scientiarum. Biological Sciences, Maringá, v. 38, n. 4, p. 481-489, Oct./Dec. 2016. http://repositorio.ufla.br/jspui/handle/1/29933 |
identifier_str_mv |
ROSSI, Z. T. T. et al. Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride. Acta Scientiarum. Biological Sciences, Maringá, v. 38, n. 4, p. 481-489, Oct./Dec. 2016. |
url |
http://repositorio.ufla.br/jspui/handle/1/29933 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá (UEM) |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá (UEM) |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835221622521856 |