Biomass accumulation, photochemical efficiency of photosystem II, nutrient contents and nitrate reductase activity in young rosewood plants
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , |
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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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 |
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/1/14065 |
dc.identifier.doi.none.fl_str_mv |
10.1590/S0044-59672007000400008 |
url |
https://repositorio.inpa.gov.br/handle/1/14065 |
identifier_str_mv |
10.1590/S0044-59672007000400008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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/ 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 |
Acta Amazonica |
publisher.none.fl_str_mv |
Acta Amazonica |
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