Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants

Detalhes bibliográficos
Autor(a) principal: Barreto, Denize Caranhas de Sousa
Data de Publicação: 2007
Outros Autores: Gonçalves, José Francisco Carvalho de, dos Santos, Ulysses Moreira, Fernandes, Andréia Varmes, Bariani, Adriana, Sampaio, Paulo de Tarso Barbosa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/14065
Resumo: The rosewood (Aniba rosaeodora Ducke) is a native tree species of Amazon rainforest growing naturally in acidic forest soils with reduced redox potential. However, this species can also been found growing in forest gaps containing oxide soils. Variations in the forms of mineral nitrogen (NO 3- or NH4+) may be predicted in these different edaphic conditions. Considering that possibility, an experiment was carried out to analyze the effects of different NO3- : NH4+) ratios on the growth performance, mineral composition, chloroplastid pigment contents, photochemical efficiency photosystem II (PSII), and nitrate redutase activity (RN, E.C.1.6.6.1) on A. rosaeodora seedlings. Nine-month-old seedlings were grown in pots with a washed sand capacity of 7.5 kg and submitted to different NO3- : NH4+) ratios (T1 = 0:100%, T2= 25:75%, T3= 50:50%, T4= 75:25%, and T5= 100:0%).The lowest relative growth rate was observed when the NO 3- : NH4+) ratio was equal to 0:100%. In general, high concentrations of NO3- rather than NH4+ favored a greater nutrient accumulation in different parts of the plant. For the chloroplastid pigment, the highest Chl a, Chl b, Chltot, Chl a/b and Chltot/CX+C contents were found in the treatment with 75:25% of NO3-:NH 4+, and for Chl b and CX+C it was observed no difference. In addition, there was a higher photochemical efficiency of PSII (FVFm/F) when high NO3- concentrations were used. A linear and positive response for the nitrate reductase activity was recorded when the nitrate content increased on the culture substrate. Our results suggest that A. rosaeodora seedlings have a better growth performance when the NO3- concentrations in the culture substrate were higher than the NH4+ concentrations.
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spelling Barreto, Denize Caranhas de SousaGonçalves, José Francisco Carvalho dedos Santos, Ulysses MoreiraFernandes, Andréia VarmesBariani, AdrianaSampaio, Paulo de Tarso Barbosa2020-04-24T16:27:55Z2020-04-24T16:27:55Z2007https://repositorio.inpa.gov.br/handle/1/1406510.1590/S0044-59672007000400008The rosewood (Aniba rosaeodora Ducke) is a native tree species of Amazon rainforest growing naturally in acidic forest soils with reduced redox potential. However, this species can also been found growing in forest gaps containing oxide soils. Variations in the forms of mineral nitrogen (NO 3- or NH4+) may be predicted in these different edaphic conditions. Considering that possibility, an experiment was carried out to analyze the effects of different NO3- : NH4+) ratios on the growth performance, mineral composition, chloroplastid pigment contents, photochemical efficiency photosystem II (PSII), and nitrate redutase activity (RN, E.C.1.6.6.1) on A. rosaeodora seedlings. Nine-month-old seedlings were grown in pots with a washed sand capacity of 7.5 kg and submitted to different NO3- : NH4+) ratios (T1 = 0:100%, T2= 25:75%, T3= 50:50%, T4= 75:25%, and T5= 100:0%).The lowest relative growth rate was observed when the NO 3- : NH4+) ratio was equal to 0:100%. In general, high concentrations of NO3- rather than NH4+ favored a greater nutrient accumulation in different parts of the plant. For the chloroplastid pigment, the highest Chl a, Chl b, Chltot, Chl a/b and Chltot/CX+C contents were found in the treatment with 75:25% of NO3-:NH 4+, and for Chl b and CX+C it was observed no difference. In addition, there was a higher photochemical efficiency of PSII (FVFm/F) when high NO3- concentrations were used. A linear and positive response for the nitrate reductase activity was recorded when the nitrate content increased on the culture substrate. Our results suggest that A. rosaeodora seedlings have a better growth performance when the NO3- concentrations in the culture substrate were higher than the NH4+ concentrations.Volume 37, Número 4, Pags. 533-542Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessAniba RosaeodoraViridiplantaeBiomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plantsAniba rosaeodora Ducke submitted to different NO3:NH4 +ratiosinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleActa Amazonicaengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfapplication/pdf454754https://repositorio.inpa.gov.br/bitstream/1/14065/1/artigo-inpa.pdfb3a57a030f72ba7e04c51cd7bf89aa13MD51CC-LICENSElicense_rdfapplication/octet-stream914https://repositorio.inpa.gov.br/bitstream/1/14065/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD521/140652020-07-13 13:38:40.151oai:repositorio:1/14065Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-13T17:38:40Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
dc.title.alternative.en.fl_str_mv Aniba rosaeodora Ducke submitted to different NO3:NH4 +ratios
title Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
spellingShingle Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
Barreto, Denize Caranhas de Sousa
Aniba Rosaeodora
Viridiplantae
title_short Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
title_full Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
title_fullStr Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
title_full_unstemmed Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
title_sort Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
author Barreto, Denize Caranhas de Sousa
author_facet Barreto, Denize Caranhas de Sousa
Gonçalves, José Francisco Carvalho de
dos Santos, Ulysses Moreira
Fernandes, Andréia Varmes
Bariani, Adriana
Sampaio, Paulo de Tarso Barbosa
author_role author
author2 Gonçalves, José Francisco Carvalho de
dos Santos, Ulysses Moreira
Fernandes, Andréia Varmes
Bariani, Adriana
Sampaio, Paulo de Tarso Barbosa
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Barreto, Denize Caranhas de Sousa
Gonçalves, José Francisco Carvalho de
dos Santos, Ulysses Moreira
Fernandes, Andréia Varmes
Bariani, Adriana
Sampaio, Paulo de Tarso Barbosa
dc.subject.eng.fl_str_mv Aniba Rosaeodora
Viridiplantae
topic Aniba Rosaeodora
Viridiplantae
description The rosewood (Aniba rosaeodora Ducke) is a native tree species of Amazon rainforest growing naturally in acidic forest soils with reduced redox potential. However, this species can also been found growing in forest gaps containing oxide soils. Variations in the forms of mineral nitrogen (NO 3- or NH4+) may be predicted in these different edaphic conditions. Considering that possibility, an experiment was carried out to analyze the effects of different NO3- : NH4+) ratios on the growth performance, mineral composition, chloroplastid pigment contents, photochemical efficiency photosystem II (PSII), and nitrate redutase activity (RN, E.C.1.6.6.1) on A. rosaeodora seedlings. Nine-month-old seedlings were grown in pots with a washed sand capacity of 7.5 kg and submitted to different NO3- : NH4+) ratios (T1 = 0:100%, T2= 25:75%, T3= 50:50%, T4= 75:25%, and T5= 100:0%).The lowest relative growth rate was observed when the NO 3- : NH4+) ratio was equal to 0:100%. In general, high concentrations of NO3- rather than NH4+ favored a greater nutrient accumulation in different parts of the plant. For the chloroplastid pigment, the highest Chl a, Chl b, Chltot, Chl a/b and Chltot/CX+C contents were found in the treatment with 75:25% of NO3-:NH 4+, and for Chl b and CX+C it was observed no difference. In addition, there was a higher photochemical efficiency of PSII (FVFm/F) when high NO3- concentrations were used. A linear and positive response for the nitrate reductase activity was recorded when the nitrate content increased on the culture substrate. Our results suggest that A. rosaeodora seedlings have a better growth performance when the NO3- concentrations in the culture substrate were higher than the NH4+ concentrations.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2020-04-24T16:27:55Z
dc.date.available.fl_str_mv 2020-04-24T16:27:55Z
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dc.identifier.uri.fl_str_mv https://repositorio.inpa.gov.br/handle/1/14065
dc.identifier.doi.none.fl_str_mv 10.1590/S0044-59672007000400008
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identifier_str_mv 10.1590/S0044-59672007000400008
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Volume 37, Número 4, Pags. 533-542
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
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rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
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dc.publisher.none.fl_str_mv Acta Amazonica
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