N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Botanica Brasilica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300012 |
Resumo: | Prior to abscission, nutrients are redeployed from leaves and redistributed to other parts of the plant. Data comparing nutrient resorption to soil fertility and leaf life span remains controversial in the literature. We compared nitrogen (N) conservation mechanisms among four legume trees with different leaf life spans (Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang., Lonchocarpus guilleminianus (Tul.) Malme, Enterolobium contortisiliquum (Vell.) Morong and Peltophorum dubium (Spreng.) Taub.), from a semideciduous tropical forest, remnant of the Atlantic Forest. We hypothesized that these mechanisms differ among the four species and are affected by their leaf life span and by the availability of N, both as a mineral in the soil and, in the case of L. guilleminianus and E. contortisiliquum, from symbiotic nitrogen fixation (SNF), as these species form associations with rhizobia. The plants were grown in a greenhouse using pots filled with forest soil, enriched (50 or 100 mg of NH4NO3 plant-1week-1) or not with nitrogen. H. courbaril, a semideciduous tree, without SNF, and with the highest leaf life span, presented the greatest N-resorption efficiency (NRE), N-resorption proficiency (NRP) and N-use efficiency (NUE). Increase in soil N and the presence of symbiotic N fixation led to a decrease in NRE, NRP and NUE. |
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N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume treesleaf life spannitrogen fixationnitrogen resorption efficiencynitrogen resorption proficiencynitrogen-use efficiencyPrior to abscission, nutrients are redeployed from leaves and redistributed to other parts of the plant. Data comparing nutrient resorption to soil fertility and leaf life span remains controversial in the literature. We compared nitrogen (N) conservation mechanisms among four legume trees with different leaf life spans (Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang., Lonchocarpus guilleminianus (Tul.) Malme, Enterolobium contortisiliquum (Vell.) Morong and Peltophorum dubium (Spreng.) Taub.), from a semideciduous tropical forest, remnant of the Atlantic Forest. We hypothesized that these mechanisms differ among the four species and are affected by their leaf life span and by the availability of N, both as a mineral in the soil and, in the case of L. guilleminianus and E. contortisiliquum, from symbiotic nitrogen fixation (SNF), as these species form associations with rhizobia. The plants were grown in a greenhouse using pots filled with forest soil, enriched (50 or 100 mg of NH4NO3 plant-1week-1) or not with nitrogen. H. courbaril, a semideciduous tree, without SNF, and with the highest leaf life span, presented the greatest N-resorption efficiency (NRE), N-resorption proficiency (NRP) and N-use efficiency (NUE). Increase in soil N and the presence of symbiotic N fixation led to a decrease in NRE, NRP and NUE.Sociedade Botânica do Brasil2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300012Acta Botanica Brasilica v.20 n.3 2006reponame:Acta Botanica Brasilicainstname:Sociedade Botânica do Brasil (SBB)instacron:SBB10.1590/S0102-33062006000300012info:eu-repo/semantics/openAccessLima,Ana Lúcia da SilvaZanella,FábioSchiavianto,Marlene AparecidaHaddad,Claudia Regina Baptistaeng2007-02-27T00:00:00Zoai:scielo:S0102-33062006000300012Revistahttps://www.scielo.br/j/abb/ONGhttps://old.scielo.br/oai/scielo-oai.phpacta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com1677-941X0102-3306opendoar:2007-02-27T00:00Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)false |
dc.title.none.fl_str_mv |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
title |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
spellingShingle |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees Lima,Ana Lúcia da Silva leaf life span nitrogen fixation nitrogen resorption efficiency nitrogen resorption proficiency nitrogen-use efficiency |
title_short |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
title_full |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
title_fullStr |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
title_full_unstemmed |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
title_sort |
N availability and mechanisms of N conservation in deciduous and semideciduous tropical forest legume trees |
author |
Lima,Ana Lúcia da Silva |
author_facet |
Lima,Ana Lúcia da Silva Zanella,Fábio Schiavianto,Marlene Aparecida Haddad,Claudia Regina Baptista |
author_role |
author |
author2 |
Zanella,Fábio Schiavianto,Marlene Aparecida Haddad,Claudia Regina Baptista |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Lima,Ana Lúcia da Silva Zanella,Fábio Schiavianto,Marlene Aparecida Haddad,Claudia Regina Baptista |
dc.subject.por.fl_str_mv |
leaf life span nitrogen fixation nitrogen resorption efficiency nitrogen resorption proficiency nitrogen-use efficiency |
topic |
leaf life span nitrogen fixation nitrogen resorption efficiency nitrogen resorption proficiency nitrogen-use efficiency |
description |
Prior to abscission, nutrients are redeployed from leaves and redistributed to other parts of the plant. Data comparing nutrient resorption to soil fertility and leaf life span remains controversial in the literature. We compared nitrogen (N) conservation mechanisms among four legume trees with different leaf life spans (Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang., Lonchocarpus guilleminianus (Tul.) Malme, Enterolobium contortisiliquum (Vell.) Morong and Peltophorum dubium (Spreng.) Taub.), from a semideciduous tropical forest, remnant of the Atlantic Forest. We hypothesized that these mechanisms differ among the four species and are affected by their leaf life span and by the availability of N, both as a mineral in the soil and, in the case of L. guilleminianus and E. contortisiliquum, from symbiotic nitrogen fixation (SNF), as these species form associations with rhizobia. The plants were grown in a greenhouse using pots filled with forest soil, enriched (50 or 100 mg of NH4NO3 plant-1week-1) or not with nitrogen. H. courbaril, a semideciduous tree, without SNF, and with the highest leaf life span, presented the greatest N-resorption efficiency (NRE), N-resorption proficiency (NRP) and N-use efficiency (NUE). Increase in soil N and the presence of symbiotic N fixation led to a decrease in NRE, NRP and NUE. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300012 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300012 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-33062006000300012 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
dc.source.none.fl_str_mv |
Acta Botanica Brasilica v.20 n.3 2006 reponame:Acta Botanica Brasilica instname:Sociedade Botânica do Brasil (SBB) instacron:SBB |
instname_str |
Sociedade Botânica do Brasil (SBB) |
instacron_str |
SBB |
institution |
SBB |
reponame_str |
Acta Botanica Brasilica |
collection |
Acta Botanica Brasilica |
repository.name.fl_str_mv |
Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB) |
repository.mail.fl_str_mv |
acta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com |
_version_ |
1752126657976598528 |