Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional do INPA |
Texto Completo: | https://repositorio.inpa.gov.br/handle/1/15542 |
Resumo: | Climate models predict an increase in atmospheric CO2 concentration and prolonged droughts in some parts of the Amazon, but the effect of elevated CO2 is still unknown. Two experiments (ambient CO2 ‒ 400 ppm and elevated CO2 ‒ 700 ppm) were conducted to assess the effect of drought (soil at 50% field capacity) on physiological parameters of Carapa. At ambient CO2 concentration, light-saturated net photosynthetic rate (PNsat) was reduced by 33.5% and stomatal conductance (gs) by 46.4% under drought, but the effect of drought on PNsat and gs was nullified at elevated CO2. Total plant biomass and leaf area production were also reduced (42‒47%) by drought. By changing leaf traits, Carapa is able to endure drought, as the consumptive use of water was reduced under drought (32‒40%). The improvement of PNsat under elevated CO2 and water stress and the leaf plasticity of Carapa broaden our understanding of the physiology of Amazonian trees. © The authors. |
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Oliveira, M. F.Marenco, R. A.2020-05-14T20:03:49Z2020-05-14T20:03:49Z2019https://repositorio.inpa.gov.br/handle/1/1554210.32615/ps.2019.023Climate models predict an increase in atmospheric CO2 concentration and prolonged droughts in some parts of the Amazon, but the effect of elevated CO2 is still unknown. Two experiments (ambient CO2 ‒ 400 ppm and elevated CO2 ‒ 700 ppm) were conducted to assess the effect of drought (soil at 50% field capacity) on physiological parameters of Carapa. At ambient CO2 concentration, light-saturated net photosynthetic rate (PNsat) was reduced by 33.5% and stomatal conductance (gs) by 46.4% under drought, but the effect of drought on PNsat and gs was nullified at elevated CO2. Total plant biomass and leaf area production were also reduced (42‒47%) by drought. By changing leaf traits, Carapa is able to endure drought, as the consumptive use of water was reduced under drought (32‒40%). The improvement of PNsat under elevated CO2 and water stress and the leaf plasticity of Carapa broaden our understanding of the physiology of Amazonian trees. © The authors.Volume 57, Número 1, Pags. 137-146Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessPhotosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePhotosyntheticaengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf632096https://repositorio.inpa.gov.br/bitstream/1/15542/1/artigo-inpa.pdfe7994b45846717bf119ee9b8b407c70bMD511/155422020-05-27 17:00:39.071oai:repositorio:1/15542Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-05-27T21:00:39Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.en.fl_str_mv |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
title |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
spellingShingle |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 Oliveira, M. F. |
title_short |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
title_full |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
title_fullStr |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
title_full_unstemmed |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
title_sort |
Photosynthesis and biomass accumulation in carapa surinamensis (Meliaceae) in response to water stress at ambient and elevated CO2 |
author |
Oliveira, M. F. |
author_facet |
Oliveira, M. F. Marenco, R. A. |
author_role |
author |
author2 |
Marenco, R. A. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Oliveira, M. F. Marenco, R. A. |
description |
Climate models predict an increase in atmospheric CO2 concentration and prolonged droughts in some parts of the Amazon, but the effect of elevated CO2 is still unknown. Two experiments (ambient CO2 ‒ 400 ppm and elevated CO2 ‒ 700 ppm) were conducted to assess the effect of drought (soil at 50% field capacity) on physiological parameters of Carapa. At ambient CO2 concentration, light-saturated net photosynthetic rate (PNsat) was reduced by 33.5% and stomatal conductance (gs) by 46.4% under drought, but the effect of drought on PNsat and gs was nullified at elevated CO2. Total plant biomass and leaf area production were also reduced (42‒47%) by drought. By changing leaf traits, Carapa is able to endure drought, as the consumptive use of water was reduced under drought (32‒40%). The improvement of PNsat under elevated CO2 and water stress and the leaf plasticity of Carapa broaden our understanding of the physiology of Amazonian trees. © The authors. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2020-05-14T20:03:49Z |
dc.date.available.fl_str_mv |
2020-05-14T20:03:49Z |
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 |
https://repositorio.inpa.gov.br/handle/1/15542 |
dc.identifier.doi.none.fl_str_mv |
10.32615/ps.2019.023 |
url |
https://repositorio.inpa.gov.br/handle/1/15542 |
identifier_str_mv |
10.32615/ps.2019.023 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Volume 57, Número 1, Pags. 137-146 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Photosynthetica |
publisher.none.fl_str_mv |
Photosynthetica |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional do INPA instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
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Instituto Nacional de Pesquisas da Amazônia (INPA) |
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INPA |
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INPA |
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Repositório Institucional do INPA |
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Repositório Institucional do INPA |
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https://repositorio.inpa.gov.br/bitstream/1/15542/1/artigo-inpa.pdf |
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Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA) |
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1801499137435238400 |