Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Botanica Brasilica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
Resumo: | Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations > 5 mg L-1 were progressively shorter than were those formed by the control plants. We conclude that the release of pollutants containing copper into the natural habitats of R. diphyllum can cause phytotoxicity, threatening the establishment of populations and worsening the already vulnerable conservation status of this species. |
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Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copperfernheavy metalspollutionreproductionspecies conservationwetlandsRegnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations > 5 mg L-1 were progressively shorter than were those formed by the control plants. We conclude that the release of pollutants containing copper into the natural habitats of R. diphyllum can cause phytotoxicity, threatening the establishment of populations and worsening the already vulnerable conservation status of this species.Sociedade Botânica do Brasil2013-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004Acta Botanica Brasilica v.27 n.1 2013reponame:Acta Botanica Brasilicainstname:Sociedade Botânica do Brasil (SBB)instacron:SBB10.1590/S0102-33062013000100004info:eu-repo/semantics/openAccessCassanego,Mara Betânia BrizolaGoldoni,AngélicaHeldt,Fágner HenriqueOsório,Daniela Montanari MigliavaccaWindisch,Paulo GünterDroste,Annetteeng2013-05-08T00:00:00Zoai:scielo:S0102-33062013000100004Revistahttps://www.scielo.br/j/abb/ONGhttps://old.scielo.br/oai/scielo-oai.phpacta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com1677-941X0102-3306opendoar:2013-05-08T00:00Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)false |
dc.title.none.fl_str_mv |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
title |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
spellingShingle |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper Cassanego,Mara Betânia Brizola fern heavy metals pollution reproduction species conservation wetlands |
title_short |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
title_full |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
title_fullStr |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
title_full_unstemmed |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
title_sort |
Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper |
author |
Cassanego,Mara Betânia Brizola |
author_facet |
Cassanego,Mara Betânia Brizola Goldoni,Angélica Heldt,Fágner Henrique Osório,Daniela Montanari Migliavacca Windisch,Paulo Günter Droste,Annette |
author_role |
author |
author2 |
Goldoni,Angélica Heldt,Fágner Henrique Osório,Daniela Montanari Migliavacca Windisch,Paulo Günter Droste,Annette |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cassanego,Mara Betânia Brizola Goldoni,Angélica Heldt,Fágner Henrique Osório,Daniela Montanari Migliavacca Windisch,Paulo Günter Droste,Annette |
dc.subject.por.fl_str_mv |
fern heavy metals pollution reproduction species conservation wetlands |
topic |
fern heavy metals pollution reproduction species conservation wetlands |
description |
Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations > 5 mg L-1 were progressively shorter than were those formed by the control plants. We conclude that the release of pollutants containing copper into the natural habitats of R. diphyllum can cause phytotoxicity, threatening the establishment of populations and worsening the already vulnerable conservation status of this species. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-33062013000100004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
dc.source.none.fl_str_mv |
Acta Botanica Brasilica v.27 n.1 2013 reponame:Acta Botanica Brasilica instname:Sociedade Botânica do Brasil (SBB) instacron:SBB |
instname_str |
Sociedade Botânica do Brasil (SBB) |
instacron_str |
SBB |
institution |
SBB |
reponame_str |
Acta Botanica Brasilica |
collection |
Acta Botanica Brasilica |
repository.name.fl_str_mv |
Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB) |
repository.mail.fl_str_mv |
acta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com |
_version_ |
1752126660806705152 |