Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature

Detalhes bibliográficos
Autor(a) principal: Dias, Daniela Pereira
Data de Publicação: 2007
Outros Autores: Marenco, R. A.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/15103
Resumo: Photoinhibition may be exacerbated by stress factors such as high temperature. The aim of the work was to determine the effects of temperature and irradiance on photosynthesis and photoinhibition in mahogany (Swietenia macrophylla King) and acariquara (Minquartia guianensis Aubl.). Also to assess the effect of irradiance and temperature on the recovery from photoinhibition at low irradiance. Sapling were grown at low irradiance: 0.20 mol m-2 day-1 (mahogany) and 1.43 mol m-2 day-1 (acariquara). Photosynthesis and fluorescence characteristics were assessed in plants subjected to two irradiances 1,000 and 1,700 μmol m-2 s-1, and two temperatures, 32 e 38°C. At 32°C, light saturated photosynthesis (Amax) was greater in mahogany than in acariquara. Mahogany plants exposed to 38°C showed a consistent decline in carbon uptake, and after 50 min both species showed the same photosynthetic rates. In saplings exposed to 32°C, increase in irradiance, from 1,000 to 1,700 μmol m-2 s-1, exacerbated photoinhibition, but without reducing Amax values. At 1,700 μmol m-2 s -1, the rise in temperature, from 32 to 38°C, did not increase photoinhibition. After 72 hours at low irradiance, recovery from photoinhibition was 80% in acariquara and 89% in mahogany. There was no effect of leaf temperature on photoinhibition.
id INPA-2_cee5f86c085cd75e63cc12f41c696f3e
oai_identifier_str oai:repositorio:1/15103
network_acronym_str INPA-2
network_name_str Repositório Institucional do INPA
repository_id_str
spelling Dias, Daniela PereiraMarenco, R. A.2020-05-07T14:06:13Z2020-05-07T14:06:13Z2007https://repositorio.inpa.gov.br/handle/1/1510310.1590/S0100-204X2007000300002Photoinhibition may be exacerbated by stress factors such as high temperature. The aim of the work was to determine the effects of temperature and irradiance on photosynthesis and photoinhibition in mahogany (Swietenia macrophylla King) and acariquara (Minquartia guianensis Aubl.). Also to assess the effect of irradiance and temperature on the recovery from photoinhibition at low irradiance. Sapling were grown at low irradiance: 0.20 mol m-2 day-1 (mahogany) and 1.43 mol m-2 day-1 (acariquara). Photosynthesis and fluorescence characteristics were assessed in plants subjected to two irradiances 1,000 and 1,700 μmol m-2 s-1, and two temperatures, 32 e 38°C. At 32°C, light saturated photosynthesis (Amax) was greater in mahogany than in acariquara. Mahogany plants exposed to 38°C showed a consistent decline in carbon uptake, and after 50 min both species showed the same photosynthetic rates. In saplings exposed to 32°C, increase in irradiance, from 1,000 to 1,700 μmol m-2 s-1, exacerbated photoinhibition, but without reducing Amax values. At 1,700 μmol m-2 s -1, the rise in temperature, from 32 to 38°C, did not increase photoinhibition. After 72 hours at low irradiance, recovery from photoinhibition was 80% in acariquara and 89% in mahogany. There was no effect of leaf temperature on photoinhibition.Volume 42, Número 3, Pags. 305-311Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessMinquartia GuianensisSwieteniaSwietenia MacrophyllaPhotosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperatureFotossíntese e fotoinibição em mogno e acariquara em função da luminosidade e temperatura foliarinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuaria Brasileiraporreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfapplication/pdf293864https://repositorio.inpa.gov.br/bitstream/1/15103/1/artigo-inpa.pdf697fe20dae4090a8706e7db62f113a49MD51CC-LICENSElicense_rdfapplication/octet-stream914https://repositorio.inpa.gov.br/bitstream/1/15103/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD521/151032020-07-14 10:48:51.068oai:repositorio:1/15103Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T14:48:51Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.pt_BR.fl_str_mv Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
dc.title.alternative.pt_BR.fl_str_mv Fotossíntese e fotoinibição em mogno e acariquara em função da luminosidade e temperatura foliar
title Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
spellingShingle Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
Dias, Daniela Pereira
Minquartia Guianensis
Swietenia
Swietenia Macrophylla
title_short Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
title_full Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
title_fullStr Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
title_full_unstemmed Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
title_sort Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature
author Dias, Daniela Pereira
author_facet Dias, Daniela Pereira
Marenco, R. A.
author_role author
author2 Marenco, R. A.
author2_role author
dc.contributor.author.fl_str_mv Dias, Daniela Pereira
Marenco, R. A.
dc.subject.eng.fl_str_mv Minquartia Guianensis
Swietenia
Swietenia Macrophylla
topic Minquartia Guianensis
Swietenia
Swietenia Macrophylla
description Photoinhibition may be exacerbated by stress factors such as high temperature. The aim of the work was to determine the effects of temperature and irradiance on photosynthesis and photoinhibition in mahogany (Swietenia macrophylla King) and acariquara (Minquartia guianensis Aubl.). Also to assess the effect of irradiance and temperature on the recovery from photoinhibition at low irradiance. Sapling were grown at low irradiance: 0.20 mol m-2 day-1 (mahogany) and 1.43 mol m-2 day-1 (acariquara). Photosynthesis and fluorescence characteristics were assessed in plants subjected to two irradiances 1,000 and 1,700 μmol m-2 s-1, and two temperatures, 32 e 38°C. At 32°C, light saturated photosynthesis (Amax) was greater in mahogany than in acariquara. Mahogany plants exposed to 38°C showed a consistent decline in carbon uptake, and after 50 min both species showed the same photosynthetic rates. In saplings exposed to 32°C, increase in irradiance, from 1,000 to 1,700 μmol m-2 s-1, exacerbated photoinhibition, but without reducing Amax values. At 1,700 μmol m-2 s -1, the rise in temperature, from 32 to 38°C, did not increase photoinhibition. After 72 hours at low irradiance, recovery from photoinhibition was 80% in acariquara and 89% in mahogany. There was no effect of leaf temperature on photoinhibition.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2020-05-07T14:06:13Z
dc.date.available.fl_str_mv 2020-05-07T14:06:13Z
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/1/15103
dc.identifier.doi.none.fl_str_mv 10.1590/S0100-204X2007000300002
url https://repositorio.inpa.gov.br/handle/1/15103
identifier_str_mv 10.1590/S0100-204X2007000300002
dc.language.iso.fl_str_mv por
language por
dc.relation.ispartof.pt_BR.fl_str_mv Volume 42, Número 3, Pags. 305-311
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 Pesquisa Agropecuaria Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Repositório Institucional do INPA
collection Repositório Institucional do INPA
bitstream.url.fl_str_mv https://repositorio.inpa.gov.br/bitstream/1/15103/1/artigo-inpa.pdf
https://repositorio.inpa.gov.br/bitstream/1/15103/2/license_rdf
bitstream.checksum.fl_str_mv 697fe20dae4090a8706e7db62f113a49
4d2950bda3d176f570a9f8b328dfbbef
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)
repository.mail.fl_str_mv
_version_ 1809928904873345024