Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?

Detalhes bibliográficos
Autor(a) principal: Bressan, Anna Carolina Gressler [UNESP]
Data de Publicação: 2021
Outros Autores: de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP], Silva, Giselle Schwab [UNESP], Habermann, Gustavo [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s40626-021-00216-y
http://hdl.handle.net/11449/233262
Resumo: Vochysia tucanorum (Vochysiaceae) is an aluminum (Al)-accumulating tree species from the Cerrado vegetation in South America, known as ‘Brazilian savanna’. In the field, it may accumulate up to 20,000 mg Al kg−1 dry leaf mass. The soils of this vegetation are acidic (pH < 5.0) with Al saturation higher than 70%, where trees of this species grow well under Al toxicity. However, what would happen if the Al disappeared from the root environment of this species? V. tucanorum seedlings were grown in pots with Cerrado soil and, after exhibiting about ten leaves, they were transferred to nutrient solution with 0 and 1110 µM Al (30 mg L−1) for 60 days. Hypothesizing that their development and photosynthetic performance would be affected, plant biomass, biometric data, leaf gas exchange rates and photochemical parameters were assessed. After seven days in nutrient solution without Al, the plants did not produce new roots, and pre-existing roots became necrotic when compared to those exposed to Al. Until 60 days, plants not exposed to Al stopped growing, showed leaf chlorosis and shed their leaves. While plants exposed to Al showed healthy leaves and roots, increased their root length and biomass and maintained high gas exchange rates and photochemical performances, plants without Al decreased CO2 assimilation rates, explained by low stomatal conductance. This preliminary study suggests the roots as the first organ to sense the lack of Al, and the dysfunction of this organ to absorb water could explain their low photosynthetic responses. Further investigation in this regard is needed.
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spelling Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?Al3+Gas exchange ratesNutrient solutionRoot developmentVochysia tucanorumVochysia tucanorum (Vochysiaceae) is an aluminum (Al)-accumulating tree species from the Cerrado vegetation in South America, known as ‘Brazilian savanna’. In the field, it may accumulate up to 20,000 mg Al kg−1 dry leaf mass. The soils of this vegetation are acidic (pH < 5.0) with Al saturation higher than 70%, where trees of this species grow well under Al toxicity. However, what would happen if the Al disappeared from the root environment of this species? V. tucanorum seedlings were grown in pots with Cerrado soil and, after exhibiting about ten leaves, they were transferred to nutrient solution with 0 and 1110 µM Al (30 mg L−1) for 60 days. Hypothesizing that their development and photosynthetic performance would be affected, plant biomass, biometric data, leaf gas exchange rates and photochemical parameters were assessed. After seven days in nutrient solution without Al, the plants did not produce new roots, and pre-existing roots became necrotic when compared to those exposed to Al. Until 60 days, plants not exposed to Al stopped growing, showed leaf chlorosis and shed their leaves. While plants exposed to Al showed healthy leaves and roots, increased their root length and biomass and maintained high gas exchange rates and photochemical performances, plants without Al decreased CO2 assimilation rates, explained by low stomatal conductance. This preliminary study suggests the roots as the first organ to sense the lack of Al, and the dysfunction of this organ to absorb water could explain their low photosynthetic responses. Further investigation in this regard is needed.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Programa de Pós-Graduação em Biologia Vegetal Departamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515Departamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515Programa de Pós-Graduação em Biologia Vegetal Departamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515Departamento de Biodiversidade Instituto de Biociências Universidade Estadual Paulista (UNESP), Av. 24-A, 1515FAPESP: #2014/14386-0FAPESP: #2018/15359-8FAPESP: #2018/25658-2CNPq: 307431/2020-7Universidade Estadual Paulista (UNESP)Bressan, Anna Carolina Gressler [UNESP]de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP]Silva, Giselle Schwab [UNESP]Habermann, Gustavo [UNESP]2022-05-01T06:02:32Z2022-05-01T06:02:32Z2021-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article281-292http://dx.doi.org/10.1007/s40626-021-00216-yTheoretical and Experimental Plant Physiology, v. 33, n. 3, p. 281-292, 2021.2197-0025http://hdl.handle.net/11449/23326210.1007/s40626-021-00216-y2-s2.0-85110095700Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTheoretical and Experimental Plant Physiologyinfo:eu-repo/semantics/openAccess2022-05-01T06:02:32Zoai:repositorio.unesp.br:11449/233262Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:26:22.478162Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
title Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
spellingShingle Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
Bressan, Anna Carolina Gressler [UNESP]
Al3+
Gas exchange rates
Nutrient solution
Root development
Vochysia tucanorum
title_short Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
title_full Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
title_fullStr Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
title_full_unstemmed Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
title_sort Could the absence of aluminum (Al) impair the development of an Al-accumulating woody species from Brazilian savanna?
author Bressan, Anna Carolina Gressler [UNESP]
author_facet Bressan, Anna Carolina Gressler [UNESP]
de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP]
Silva, Giselle Schwab [UNESP]
Habermann, Gustavo [UNESP]
author_role author
author2 de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP]
Silva, Giselle Schwab [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 Bressan, Anna Carolina Gressler [UNESP]
de Oliveira Carvalho Bittencourt, Brenda Mistral [UNESP]
Silva, Giselle Schwab [UNESP]
Habermann, Gustavo [UNESP]
dc.subject.por.fl_str_mv Al3+
Gas exchange rates
Nutrient solution
Root development
Vochysia tucanorum
topic Al3+
Gas exchange rates
Nutrient solution
Root development
Vochysia tucanorum
description Vochysia tucanorum (Vochysiaceae) is an aluminum (Al)-accumulating tree species from the Cerrado vegetation in South America, known as ‘Brazilian savanna’. In the field, it may accumulate up to 20,000 mg Al kg−1 dry leaf mass. The soils of this vegetation are acidic (pH < 5.0) with Al saturation higher than 70%, where trees of this species grow well under Al toxicity. However, what would happen if the Al disappeared from the root environment of this species? V. tucanorum seedlings were grown in pots with Cerrado soil and, after exhibiting about ten leaves, they were transferred to nutrient solution with 0 and 1110 µM Al (30 mg L−1) for 60 days. Hypothesizing that their development and photosynthetic performance would be affected, plant biomass, biometric data, leaf gas exchange rates and photochemical parameters were assessed. After seven days in nutrient solution without Al, the plants did not produce new roots, and pre-existing roots became necrotic when compared to those exposed to Al. Until 60 days, plants not exposed to Al stopped growing, showed leaf chlorosis and shed their leaves. While plants exposed to Al showed healthy leaves and roots, increased their root length and biomass and maintained high gas exchange rates and photochemical performances, plants without Al decreased CO2 assimilation rates, explained by low stomatal conductance. This preliminary study suggests the roots as the first organ to sense the lack of Al, and the dysfunction of this organ to absorb water could explain their low photosynthetic responses. Further investigation in this regard is needed.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-01
2022-05-01T06:02:32Z
2022-05-01T06:02:32Z
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/s40626-021-00216-y
Theoretical and Experimental Plant Physiology, v. 33, n. 3, p. 281-292, 2021.
2197-0025
http://hdl.handle.net/11449/233262
10.1007/s40626-021-00216-y
2-s2.0-85110095700
url http://dx.doi.org/10.1007/s40626-021-00216-y
http://hdl.handle.net/11449/233262
identifier_str_mv Theoretical and Experimental Plant Physiology, v. 33, n. 3, p. 281-292, 2021.
2197-0025
10.1007/s40626-021-00216-y
2-s2.0-85110095700
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Theoretical and Experimental Plant Physiology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 281-292
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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