ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/3325 |
Resumo: | Nitrate content determination is important for food quality evaluation, therefore when ingested nitrate is reduced the nitrite, which can generate harmful compounds to the human organism. Ahead of this, the present work had as objective to study the transport and accumulation of nitrogen compounds and the nitrate reductase activity in lettuce cultivar 'Vera' produced in Registro (SP) in different cropping systems. Were collected samples of the xylem sap, aerial part and root for quantification of nitrogen compounds and of the reductase activity in vivo. The nitrate concentration in the xylem sap, the nitrate and amino acids contents, as well as the nitrate reductase activity, demonstrated more intense transport, accumulation and assimilation in plants cultivated in in hydroponic solution, followed of the conventional system and finally, of the organic. The stem of the plant in the three systems of culture presented high capacity of accumulation and assimilation the nitrogen compounds. The nitrate reductase activity in leaves was superior of the root. The content nitrate, independent of the culture system, varied of 24.32 the 800.06 mg kg-1 of FW in the different parts of the plant. However, it did not exceed the maximum limits recommended by literature. KEY-WORDS: Vegetables; quality; nitrite; metabolism of nitrogen. |
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ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMSACÚMULO DE COMPOSTOS NITROGENADOS E ATIVIDADE DA REDUTASE DO NITRATO EM ALFACE PRODUZIDA EM DIFERENTES SISTEMAS DE CULTIVOvegetablesqualitynitritemetabolism of nitrogenHortaliçaqualidadenitritometabolismo do nitrogênio Nitrate content determination is important for food quality evaluation, therefore when ingested nitrate is reduced the nitrite, which can generate harmful compounds to the human organism. Ahead of this, the present work had as objective to study the transport and accumulation of nitrogen compounds and the nitrate reductase activity in lettuce cultivar 'Vera' produced in Registro (SP) in different cropping systems. Were collected samples of the xylem sap, aerial part and root for quantification of nitrogen compounds and of the reductase activity in vivo. The nitrate concentration in the xylem sap, the nitrate and amino acids contents, as well as the nitrate reductase activity, demonstrated more intense transport, accumulation and assimilation in plants cultivated in in hydroponic solution, followed of the conventional system and finally, of the organic. The stem of the plant in the three systems of culture presented high capacity of accumulation and assimilation the nitrogen compounds. The nitrate reductase activity in leaves was superior of the root. The content nitrate, independent of the culture system, varied of 24.32 the 800.06 mg kg-1 of FW in the different parts of the plant. However, it did not exceed the maximum limits recommended by literature. KEY-WORDS: Vegetables; quality; nitrite; metabolism of nitrogen.O teor de nitrato é um importante índice da qualidade dos alimentos, pois quando ingerido nitrato é reduzido a nitrito, o qual pode gerar compostos prejudiciais ao organismo humano. Diante disso, o presente trabalho teve como objetivo estudar o transporte e acúmulo de compostos nitrogenados e a atividade da enzima redutase do nitrato em alface cultivar 'Vera' produzida em Registro (SP) em diferentes sistemas de cultivo. Foram coletadas amostras da seiva do xilema, da parte aérea e da raiz das plantas para quantificação de compostos nitrogenados e atividade da redutase do nitrato in vivo. A concentração de nitrato na seiva xilema, os teores de nitrato e aminoácidos, bem como a atividade da redutase do nitrato, demonstraram transporte, acumulação e assimilação mais intensos em plantas cultivadas em hidroponia, seguido do sistema convencional e por último, do orgânico. O caule da planta nos três sistemas de cultivo apresentou capacidade elevada de acumulação e assimilação de compostos nitrogenados. A atividade da redutase do nitrato nas folhas foi superior a da raiz. O teor de nitrato, independente do sistema de cultivo, variou de 24,32 a 800,06 mg Kg-1 de MF nas diferentes partes da planta. Contudo, não excedeu os limites máximos recomendados pela literatura. PALAVRAS-CHAVE: Hortaliça, qualidade, nitrito, metabolismo do nitrogênio. Escola de Agronomia - Universidade Federal de Goiás2008-09-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresPesquisa experimentalapplication/pdfhttps://revistas.ufg.br/pat/article/view/3325Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 38, n. 3, Jul./Sep. 2008; 180-187Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 38, n. 3, jul./set. 2008; 180-187Pesquisa Agropecuária Tropical; v. 38, n. 3, jul./set. 2008; 180-1871983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/3325/4064Lima, Juliana DominguesMoraes, Wilson da SilvaSilva, Sílvia Helena Gorla Modenese daIbrahim, Fernanda NunesSilva Júnior, Antônio Carlos dainfo:eu-repo/semantics/openAccess2020-02-27T00:02:49Zoai:ojs.revistas.ufg.br:article/3325Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:33.557852Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS ACÚMULO DE COMPOSTOS NITROGENADOS E ATIVIDADE DA REDUTASE DO NITRATO EM ALFACE PRODUZIDA EM DIFERENTES SISTEMAS DE CULTIVO |
title |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
spellingShingle |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS Lima, Juliana Domingues vegetables quality nitrite metabolism of nitrogen Hortaliça qualidade nitrito metabolismo do nitrogênio |
title_short |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
title_full |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
title_fullStr |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
title_full_unstemmed |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
title_sort |
ACCUMULATION OF NITROGEN COMPOUNDS AND NITRATE REDUCTASE ACTIVITY IN LETTUCE CULTIVATED IN DIFFERENT CROP SYSTEMS |
author |
Lima, Juliana Domingues |
author_facet |
Lima, Juliana Domingues Moraes, Wilson da Silva Silva, Sílvia Helena Gorla Modenese da Ibrahim, Fernanda Nunes Silva Júnior, Antônio Carlos da |
author_role |
author |
author2 |
Moraes, Wilson da Silva Silva, Sílvia Helena Gorla Modenese da Ibrahim, Fernanda Nunes Silva Júnior, Antônio Carlos da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lima, Juliana Domingues Moraes, Wilson da Silva Silva, Sílvia Helena Gorla Modenese da Ibrahim, Fernanda Nunes Silva Júnior, Antônio Carlos da |
dc.subject.por.fl_str_mv |
vegetables quality nitrite metabolism of nitrogen Hortaliça qualidade nitrito metabolismo do nitrogênio |
topic |
vegetables quality nitrite metabolism of nitrogen Hortaliça qualidade nitrito metabolismo do nitrogênio |
description |
Nitrate content determination is important for food quality evaluation, therefore when ingested nitrate is reduced the nitrite, which can generate harmful compounds to the human organism. Ahead of this, the present work had as objective to study the transport and accumulation of nitrogen compounds and the nitrate reductase activity in lettuce cultivar 'Vera' produced in Registro (SP) in different cropping systems. Were collected samples of the xylem sap, aerial part and root for quantification of nitrogen compounds and of the reductase activity in vivo. The nitrate concentration in the xylem sap, the nitrate and amino acids contents, as well as the nitrate reductase activity, demonstrated more intense transport, accumulation and assimilation in plants cultivated in in hydroponic solution, followed of the conventional system and finally, of the organic. The stem of the plant in the three systems of culture presented high capacity of accumulation and assimilation the nitrogen compounds. The nitrate reductase activity in leaves was superior of the root. The content nitrate, independent of the culture system, varied of 24.32 the 800.06 mg kg-1 of FW in the different parts of the plant. However, it did not exceed the maximum limits recommended by literature. KEY-WORDS: Vegetables; quality; nitrite; metabolism of nitrogen. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-23 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares Pesquisa experimental |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/3325 |
url |
https://revistas.ufg.br/pat/article/view/3325 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/3325/4064 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 38, n. 3, Jul./Sep. 2008; 180-187 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 38, n. 3, jul./set. 2008; 180-187 Pesquisa Agropecuária Tropical; v. 38, n. 3, jul./set. 2008; 180-187 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874816416677888 |