Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/34300 |
Resumo: | Rare earth elements, such as lanthanum (La), have been applied to agriculture via fertilizers, aiming to increase the productivity and crop quality, such results observed mainly in China. However, the knowledge about the effect of La on maize growth, as well as for other species, despite the growing interest it is still limited. The aim of this study was to evaluate the effects of La on maize growth, La content, photosynthetic rate and chlorophyll content in maize plants in response to La treatment (0, 25, 50, 100, 150, 300 and 600 μM) in nutrient solution for three weeks. The plants were placed in geminated pots using a split-root technique. One of the pots in the geminated set was filled with a complete nutrient solution without La, while another was filled with a nutrient solution without phosphorus but containing different concentrations of La. It was verified that roots of maize plants can accumulate approximately sixty percent more La than shoots. Moreover, low La concentrations stimulated an increase in chlorophyll index, resulting in a slight increase in shoot biomass. At higher levels, La didn’t reduce growth but caused a decrease in both photosynthetic rate and chlorophyll index. |
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Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plantsTeor de lantânio e efeitos no crescimento, trocas gasosas e teor de clorofila em plantas de milhoCropsPhotosynthesisRare earth elementsZea maysCulturas agrícolasElementos terras rarasFotossínteseRare earth elements, such as lanthanum (La), have been applied to agriculture via fertilizers, aiming to increase the productivity and crop quality, such results observed mainly in China. However, the knowledge about the effect of La on maize growth, as well as for other species, despite the growing interest it is still limited. The aim of this study was to evaluate the effects of La on maize growth, La content, photosynthetic rate and chlorophyll content in maize plants in response to La treatment (0, 25, 50, 100, 150, 300 and 600 μM) in nutrient solution for three weeks. The plants were placed in geminated pots using a split-root technique. One of the pots in the geminated set was filled with a complete nutrient solution without La, while another was filled with a nutrient solution without phosphorus but containing different concentrations of La. It was verified that roots of maize plants can accumulate approximately sixty percent more La than shoots. Moreover, low La concentrations stimulated an increase in chlorophyll index, resulting in a slight increase in shoot biomass. At higher levels, La didn’t reduce growth but caused a decrease in both photosynthetic rate and chlorophyll index.Elementos terra rara, como lantânio (La), são aplicados à agricultura via fertilizantes, com o objetivo de aumentar a produtividade e a qualidade das culturas agrícolas, fato observado principalmente na China. Entretanto, o conhecimento sobre o efeito de La no crescimento do milho, bem como para outras culturas agrícolas, ainda é limitado apesar do interesse crescente. O presente estudo objetivou avaliar o efeito da aplicação de La sobre o crescimento, teor de La, fotossíntese e teor de clorofila em plantas de milho, expostas a concentrações crescentes de La (0, 25, 50, 100, 150, 300 e 600 μM) em solução nutritiva por três semanas. As plantas foram colocadas em vasos geminados usando uma técnica de raiz divisória. Um dos potes no conjunto geminado foi preenchido com solução nutritiva completa que não continha La, enquanto outra foi preenchida com solução nutritiva sem fósforo, mas contendo diferentes concentrações de La. Foi verificado que as raízes das plantas de milho podem acumular sessenta por cento mais La quando comparado à parte aérea. Além disso, as baixas concentrações de La estimularam o aumento do teor de clorofila, resultando em um aumento na biomassa da parte aérea. Em concentrações mais elevadas, a aplicação de La não reduziu o crescimento das plantas de milho, mas causou diminuição na taxa fotossintética e no índice de clorofila.Universidade Estadual de Maringá2019-05-17T11:35:29Z2019-05-17T11:35:29Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDUARTE, A. C. O. et al. Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants. Acta Scientiarum. Biological Sciences, Maringá, v. 40, 2018.http://repositorio.ufla.br/jspui/handle/1/34300Acta Scientiarum. Biological Sciencesreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessDuarte, Ana Carolina OliveiraOliveira, Cynthia deRamos, Sílvio JunioCastro, Evaristo Mauro deSiqueira, José OswaldoGuilherme, Luiz Roberto Guimarãeseng2019-05-17T11:35:30Zoai:localhost:1/34300Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-05-17T11:35:30Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants Teor de lantânio e efeitos no crescimento, trocas gasosas e teor de clorofila em plantas de milho |
title |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
spellingShingle |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants Duarte, Ana Carolina Oliveira Crops Photosynthesis Rare earth elements Zea mays Culturas agrícolas Elementos terras raras Fotossíntese |
title_short |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
title_full |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
title_fullStr |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
title_full_unstemmed |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
title_sort |
Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants |
author |
Duarte, Ana Carolina Oliveira |
author_facet |
Duarte, Ana Carolina Oliveira Oliveira, Cynthia de Ramos, Sílvio Junio Castro, Evaristo Mauro de Siqueira, José Oswaldo Guilherme, Luiz Roberto Guimarães |
author_role |
author |
author2 |
Oliveira, Cynthia de Ramos, Sílvio Junio Castro, Evaristo Mauro de Siqueira, José Oswaldo Guilherme, Luiz Roberto Guimarães |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Duarte, Ana Carolina Oliveira Oliveira, Cynthia de Ramos, Sílvio Junio Castro, Evaristo Mauro de Siqueira, José Oswaldo Guilherme, Luiz Roberto Guimarães |
dc.subject.por.fl_str_mv |
Crops Photosynthesis Rare earth elements Zea mays Culturas agrícolas Elementos terras raras Fotossíntese |
topic |
Crops Photosynthesis Rare earth elements Zea mays Culturas agrícolas Elementos terras raras Fotossíntese |
description |
Rare earth elements, such as lanthanum (La), have been applied to agriculture via fertilizers, aiming to increase the productivity and crop quality, such results observed mainly in China. However, the knowledge about the effect of La on maize growth, as well as for other species, despite the growing interest it is still limited. The aim of this study was to evaluate the effects of La on maize growth, La content, photosynthetic rate and chlorophyll content in maize plants in response to La treatment (0, 25, 50, 100, 150, 300 and 600 μM) in nutrient solution for three weeks. The plants were placed in geminated pots using a split-root technique. One of the pots in the geminated set was filled with a complete nutrient solution without La, while another was filled with a nutrient solution without phosphorus but containing different concentrations of La. It was verified that roots of maize plants can accumulate approximately sixty percent more La than shoots. Moreover, low La concentrations stimulated an increase in chlorophyll index, resulting in a slight increase in shoot biomass. At higher levels, La didn’t reduce growth but caused a decrease in both photosynthetic rate and chlorophyll index. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2019-05-17T11:35:29Z 2019-05-17T11:35:29Z |
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 |
DUARTE, A. C. O. et al. Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants. Acta Scientiarum. Biological Sciences, Maringá, v. 40, 2018. http://repositorio.ufla.br/jspui/handle/1/34300 |
identifier_str_mv |
DUARTE, A. C. O. et al. Lanthanum content and effects on growth, gas exchanges, and chlorophyll index in maize plants. Acta Scientiarum. Biological Sciences, Maringá, v. 40, 2018. |
url |
http://repositorio.ufla.br/jspui/handle/1/34300 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International 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 |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
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 |
_version_ |
1807835146832838656 |