Morphoanatomical responses induced by excess iron in roots of two tolerant grass species
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://dx.doi.org/10.1007/s11356-014-3488-1 http://www.locus.ufv.br/handle/123456789/12917 |
Resumo: | We aimed to verify whether morphoanatomic alterations occur in response to excess iron, in roots of Setaria parviflora and Paspallum urvillei (Poaceae), and to localize the presence of the sites of iron accumulation. Plants were subjected to 0.009, 1, 2, 4, and 7 mM Fe-EDTA in nutrient solution. Both species presented iron contents in the roots above the critical toxicity level. The presence of iron plaque on roots of the two species was confirmed, and it may have reduced iron absorption by the plants. Roots from the two species showed typical visual symptoms of stress by excess iron: change in color and mucilaginous and flaccid appearance. Anatomical damage was observed in both species: aerenchyma disruption, alterations in endodermal cells, and irregular shape of both vessel and sieve tube elements. The metal was histolocalized in the cortex and in protoxylem and metaxylem cell walls in both species, which suggests a detoxification strategy for the excess iron. Phenolic compounds were not histolocalized in roots. Microscopic analyses were therefore effective in evaluating the real damage caused by excess iron. |
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Araújo, Talita Oliveira deFreitas-Silva, Larisse deSantana, Brenda Vila NovaKuki, Kacilda NaomiPereira, Eduardo GusmãoAzevedo, Aristéa AlvesSilva, Luzimar Campos da2017-11-08T16:36:11Z2017-11-08T16:36:11Z2014-08-311614-7499http://dx.doi.org/10.1007/s11356-014-3488-1http://www.locus.ufv.br/handle/123456789/12917We aimed to verify whether morphoanatomic alterations occur in response to excess iron, in roots of Setaria parviflora and Paspallum urvillei (Poaceae), and to localize the presence of the sites of iron accumulation. Plants were subjected to 0.009, 1, 2, 4, and 7 mM Fe-EDTA in nutrient solution. Both species presented iron contents in the roots above the critical toxicity level. The presence of iron plaque on roots of the two species was confirmed, and it may have reduced iron absorption by the plants. Roots from the two species showed typical visual symptoms of stress by excess iron: change in color and mucilaginous and flaccid appearance. Anatomical damage was observed in both species: aerenchyma disruption, alterations in endodermal cells, and irregular shape of both vessel and sieve tube elements. The metal was histolocalized in the cortex and in protoxylem and metaxylem cell walls in both species, which suggests a detoxification strategy for the excess iron. Phenolic compounds were not histolocalized in roots. Microscopic analyses were therefore effective in evaluating the real damage caused by excess iron.engEnvironmental Science and Pollution Research22:2, p.187–2195, August 2014Setaria parvifloraPaspallum urvilleiPoaceaeSymptomatologyHistochemistryEnergy dispersive X-ray (EDX)Morphoanatomical responses induced by excess iron in roots of two tolerant grass speciesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINAL10.1007-s11356-014-3488-1.pdf10.1007-s11356-014-3488-1.pdftexto completoapplication/pdf23185676https://locus.ufv.br//bitstream/123456789/12917/1/10.1007-s11356-014-3488-1.pdffbe007275ff66bbece5404219b00e69dMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/12917/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAIL10.1007-s11356-014-3488-1.pdf.jpg10.1007-s11356-014-3488-1.pdf.jpgIM Thumbnailimage/jpeg5029https://locus.ufv.br//bitstream/123456789/12917/3/10.1007-s11356-014-3488-1.pdf.jpg4283e2d41061f46b7d158d0f080e90c1MD53123456789/129172017-11-08 22:01:02.957oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452017-11-09T01:01:02LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
title |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
spellingShingle |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species Araújo, Talita Oliveira de Setaria parviflora Paspallum urvillei Poaceae Symptomatology Histochemistry Energy dispersive X-ray (EDX) |
title_short |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
title_full |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
title_fullStr |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
title_full_unstemmed |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
title_sort |
Morphoanatomical responses induced by excess iron in roots of two tolerant grass species |
author |
Araújo, Talita Oliveira de |
author_facet |
Araújo, Talita Oliveira de Freitas-Silva, Larisse de Santana, Brenda Vila Nova Kuki, Kacilda Naomi Pereira, Eduardo Gusmão Azevedo, Aristéa Alves Silva, Luzimar Campos da |
author_role |
author |
author2 |
Freitas-Silva, Larisse de Santana, Brenda Vila Nova Kuki, Kacilda Naomi Pereira, Eduardo Gusmão Azevedo, Aristéa Alves Silva, Luzimar Campos da |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Araújo, Talita Oliveira de Freitas-Silva, Larisse de Santana, Brenda Vila Nova Kuki, Kacilda Naomi Pereira, Eduardo Gusmão Azevedo, Aristéa Alves Silva, Luzimar Campos da |
dc.subject.pt-BR.fl_str_mv |
Setaria parviflora Paspallum urvillei Poaceae Symptomatology Histochemistry Energy dispersive X-ray (EDX) |
topic |
Setaria parviflora Paspallum urvillei Poaceae Symptomatology Histochemistry Energy dispersive X-ray (EDX) |
description |
We aimed to verify whether morphoanatomic alterations occur in response to excess iron, in roots of Setaria parviflora and Paspallum urvillei (Poaceae), and to localize the presence of the sites of iron accumulation. Plants were subjected to 0.009, 1, 2, 4, and 7 mM Fe-EDTA in nutrient solution. Both species presented iron contents in the roots above the critical toxicity level. The presence of iron plaque on roots of the two species was confirmed, and it may have reduced iron absorption by the plants. Roots from the two species showed typical visual symptoms of stress by excess iron: change in color and mucilaginous and flaccid appearance. Anatomical damage was observed in both species: aerenchyma disruption, alterations in endodermal cells, and irregular shape of both vessel and sieve tube elements. The metal was histolocalized in the cortex and in protoxylem and metaxylem cell walls in both species, which suggests a detoxification strategy for the excess iron. Phenolic compounds were not histolocalized in roots. Microscopic analyses were therefore effective in evaluating the real damage caused by excess iron. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-08-31 |
dc.date.accessioned.fl_str_mv |
2017-11-08T16:36:11Z |
dc.date.available.fl_str_mv |
2017-11-08T16:36:11Z |
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://dx.doi.org/10.1007/s11356-014-3488-1 http://www.locus.ufv.br/handle/123456789/12917 |
dc.identifier.issn.none.fl_str_mv |
1614-7499 |
identifier_str_mv |
1614-7499 |
url |
http://dx.doi.org/10.1007/s11356-014-3488-1 http://www.locus.ufv.br/handle/123456789/12917 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
22:2, p.187–2195, August 2014 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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dc.publisher.none.fl_str_mv |
Environmental Science and Pollution Research |
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Environmental Science and Pollution Research |
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