Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00468-019-01907-5 http://hdl.handle.net/11449/199547 |
Resumo: | Key message: Styrax camporum, an Al-accumulating species from the Cerrado, seems to rely on the exudation of citric and oxalic acids to avoid excessive Al. Abstract: Organic acid (OA) exudation by the roots of plants to chelate aluminum (Al) and forming non-toxic complexes is a known mechanism of Al exclusion in some plants, including some Al-accumulating species. The Cerrado vegetation in South America is composed of Al non-accumulating species and some Al-accumulating species from few families, all growing healthy on acidic soils with high Al saturation but never tested for OA exudation. We elected Styrax camporum (Styracaceae), a Cerrado woody species that accumulates in their leaves approximately 1500 mg Al kg−1 dry mass, to examine whether plantlets of this species exude OAs in response to changes in Al concentrations in a nutrient solution, for 30 days. Citric, malic and oxalic acids exuded by the roots of this species were cumulatively measured in nutrient solutions containing 0, 740 and 1480 μM Al. Also, we measured the Al concentration of whole plantlets at 0 and 30 days. Malic acid was not exuded by the plantlets, but it was detected inside root tips of plantlets exposed to Al. Plantlets exposed to 740 μM Al released more oxalic and citric acid in the nutrient solution than those exposed to 0 and 1480 μM Al after 30 days. On the other hand, between 0 and 30 days, plantlets exposed to 740 μM Al increased the Al concentration (in whole plantlet) by three times while those exposed to 1480 μM Al, by seven times. This higher OA exudation associated with lower Al uptake at 740 μM Al suggests an Al exclusion mechanism that is impaired at higher Al concentrations. This is the first report showing that an Al-accumulating species from the Cerrado exudes OAs in response to the Al concentration in the root environment. |
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Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savannaAluminum exclusionCerrado vegetationCitric acidOxalic acidStyrax camporumKey message: Styrax camporum, an Al-accumulating species from the Cerrado, seems to rely on the exudation of citric and oxalic acids to avoid excessive Al. Abstract: Organic acid (OA) exudation by the roots of plants to chelate aluminum (Al) and forming non-toxic complexes is a known mechanism of Al exclusion in some plants, including some Al-accumulating species. The Cerrado vegetation in South America is composed of Al non-accumulating species and some Al-accumulating species from few families, all growing healthy on acidic soils with high Al saturation but never tested for OA exudation. We elected Styrax camporum (Styracaceae), a Cerrado woody species that accumulates in their leaves approximately 1500 mg Al kg−1 dry mass, to examine whether plantlets of this species exude OAs in response to changes in Al concentrations in a nutrient solution, for 30 days. Citric, malic and oxalic acids exuded by the roots of this species were cumulatively measured in nutrient solutions containing 0, 740 and 1480 μM Al. Also, we measured the Al concentration of whole plantlets at 0 and 30 days. Malic acid was not exuded by the plantlets, but it was detected inside root tips of plantlets exposed to Al. Plantlets exposed to 740 μM Al released more oxalic and citric acid in the nutrient solution than those exposed to 0 and 1480 μM Al after 30 days. On the other hand, between 0 and 30 days, plantlets exposed to 740 μM Al increased the Al concentration (in whole plantlet) by three times while those exposed to 1480 μM Al, by seven times. This higher OA exudation associated with lower Al uptake at 740 μM Al suggests an Al exclusion mechanism that is impaired at higher Al concentrations. This is the first report showing that an Al-accumulating species from the Cerrado exudes OAs in response to the Al concentration in the root environment.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Departamento de Botânica Instituto de Biociências Programa de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Universidade Estadual Paulista UNESP, Av. 24-A, 1515Instituto de Biociências Centro de Estudos de Insetos Sociais (CEIS) Universidade Estadual Paulista UNESP, Av. 24-A, 1515Departamento de Botânica Instituto de Biociências Universidade Estadual Paulista UNESP, Av. 24-A, 1515Departamento de Botânica Instituto de Biociências Programa de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Universidade Estadual Paulista UNESP, Av. 24-A, 1515Instituto de Biociências Centro de Estudos de Insetos Sociais (CEIS) Universidade Estadual Paulista UNESP, Av. 24-A, 1515Departamento de Botânica Instituto de Biociências Universidade Estadual Paulista UNESP, Av. 24-A, 1515FAPESP: #2013/11370-3FAPESP: #2016/14216-3CNPq: #309149/2017-7 (Productivity Fellowship)CNPq: #474169/2013-8 (Financial support)Universidade Estadual Paulista (Unesp)de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP]da Silva, Carolina de Marchi Santiago [UNESP]Filho, Sebastião Zanão [UNESP]Habermann, Gustavo [UNESP]2020-12-12T01:42:54Z2020-12-12T01:42:54Z2020-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article155-162http://dx.doi.org/10.1007/s00468-019-01907-5Trees - Structure and Function, v. 34, n. 1, p. 155-162, 2020.0931-1890http://hdl.handle.net/11449/19954710.1007/s00468-019-01907-52-s2.0-85073931072Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTrees - Structure and Functioninfo:eu-repo/semantics/openAccess2024-04-11T14:57:29Zoai:repositorio.unesp.br:11449/199547Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:24:35.383680Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
title |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
spellingShingle |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP] Aluminum exclusion Cerrado vegetation Citric acid Oxalic acid Styrax camporum |
title_short |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
title_full |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
title_fullStr |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
title_full_unstemmed |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
title_sort |
Aluminum (Al)-induced organic acid exudation in an Al-accumulating species from the Brazilian savanna |
author |
de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP] |
author_facet |
de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP] da Silva, Carolina de Marchi Santiago [UNESP] Filho, Sebastião Zanão [UNESP] Habermann, Gustavo [UNESP] |
author_role |
author |
author2 |
da Silva, Carolina de Marchi Santiago [UNESP] Filho, Sebastião Zanão [UNESP] Habermann, Gustavo [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP] da Silva, Carolina de Marchi Santiago [UNESP] Filho, Sebastião Zanão [UNESP] Habermann, Gustavo [UNESP] |
dc.subject.por.fl_str_mv |
Aluminum exclusion Cerrado vegetation Citric acid Oxalic acid Styrax camporum |
topic |
Aluminum exclusion Cerrado vegetation Citric acid Oxalic acid Styrax camporum |
description |
Key message: Styrax camporum, an Al-accumulating species from the Cerrado, seems to rely on the exudation of citric and oxalic acids to avoid excessive Al. Abstract: Organic acid (OA) exudation by the roots of plants to chelate aluminum (Al) and forming non-toxic complexes is a known mechanism of Al exclusion in some plants, including some Al-accumulating species. The Cerrado vegetation in South America is composed of Al non-accumulating species and some Al-accumulating species from few families, all growing healthy on acidic soils with high Al saturation but never tested for OA exudation. We elected Styrax camporum (Styracaceae), a Cerrado woody species that accumulates in their leaves approximately 1500 mg Al kg−1 dry mass, to examine whether plantlets of this species exude OAs in response to changes in Al concentrations in a nutrient solution, for 30 days. Citric, malic and oxalic acids exuded by the roots of this species were cumulatively measured in nutrient solutions containing 0, 740 and 1480 μM Al. Also, we measured the Al concentration of whole plantlets at 0 and 30 days. Malic acid was not exuded by the plantlets, but it was detected inside root tips of plantlets exposed to Al. Plantlets exposed to 740 μM Al released more oxalic and citric acid in the nutrient solution than those exposed to 0 and 1480 μM Al after 30 days. On the other hand, between 0 and 30 days, plantlets exposed to 740 μM Al increased the Al concentration (in whole plantlet) by three times while those exposed to 1480 μM Al, by seven times. This higher OA exudation associated with lower Al uptake at 740 μM Al suggests an Al exclusion mechanism that is impaired at higher Al concentrations. This is the first report showing that an Al-accumulating species from the Cerrado exudes OAs in response to the Al concentration in the root environment. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:42:54Z 2020-12-12T01:42:54Z 2020-02-01 |
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/s00468-019-01907-5 Trees - Structure and Function, v. 34, n. 1, p. 155-162, 2020. 0931-1890 http://hdl.handle.net/11449/199547 10.1007/s00468-019-01907-5 2-s2.0-85073931072 |
url |
http://dx.doi.org/10.1007/s00468-019-01907-5 http://hdl.handle.net/11449/199547 |
identifier_str_mv |
Trees - Structure and Function, v. 34, n. 1, p. 155-162, 2020. 0931-1890 10.1007/s00468-019-01907-5 2-s2.0-85073931072 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Trees - Structure and Function |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
155-162 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129424669802496 |