Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.

Detalhes bibliográficos
Autor(a) principal: SILVA, E. C.
Data de Publicação: 2009
Outros Autores: NOGUEIRA, R. J. M. C., VALE, F. H. A., MELO, N. F. de, ARAUJO, F. P. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914
Resumo: In order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes.
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spelling Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.UmbuzeiroBioma CaatingaUmbuSpondias TuberosaCarboidratoPotencial HídricoProlinaGenótipoCarbohydratesProlineSpondiasWater potentialIn order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes.ELIZAMAR C. SILVA; REJANE J. M. C. NOGUEIRA; FERNANDO H. A. VALE; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISCO PINHEIRO DE ARAUJO, CPATSA.SILVA, E. C.NOGUEIRA, R. J. M. C.VALE, F. H. A.MELO, N. F. deARAUJO, F. P. de2011-04-09T20:58:03Z2011-04-09T20:58:03Z2009-12-1420092011-04-10T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBrazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009.http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2011-04-11T14:51:10Zoai:www.alice.cnptia.embrapa.br:doc/577914Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542011-04-11T14:51:10falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542011-04-11T14:51:10Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
title Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
spellingShingle Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
SILVA, E. C.
Umbuzeiro
Bioma Caatinga
Umbu
Spondias Tuberosa
Carboidrato
Potencial Hídrico
Prolina
Genótipo
Carbohydrates
Proline
Spondias
Water potential
title_short Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
title_full Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
title_fullStr Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
title_full_unstemmed Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
title_sort Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
author SILVA, E. C.
author_facet SILVA, E. C.
NOGUEIRA, R. J. M. C.
VALE, F. H. A.
MELO, N. F. de
ARAUJO, F. P. de
author_role author
author2 NOGUEIRA, R. J. M. C.
VALE, F. H. A.
MELO, N. F. de
ARAUJO, F. P. de
author2_role author
author
author
author
dc.contributor.none.fl_str_mv ELIZAMAR C. SILVA; REJANE J. M. C. NOGUEIRA; FERNANDO H. A. VALE; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISCO PINHEIRO DE ARAUJO, CPATSA.
dc.contributor.author.fl_str_mv SILVA, E. C.
NOGUEIRA, R. J. M. C.
VALE, F. H. A.
MELO, N. F. de
ARAUJO, F. P. de
dc.subject.por.fl_str_mv Umbuzeiro
Bioma Caatinga
Umbu
Spondias Tuberosa
Carboidrato
Potencial Hídrico
Prolina
Genótipo
Carbohydrates
Proline
Spondias
Water potential
topic Umbuzeiro
Bioma Caatinga
Umbu
Spondias Tuberosa
Carboidrato
Potencial Hídrico
Prolina
Genótipo
Carbohydrates
Proline
Spondias
Water potential
description In order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes.
publishDate 2009
dc.date.none.fl_str_mv 2009-12-14
2009
2011-04-09T20:58:03Z
2011-04-09T20:58:03Z
2011-04-10T11:11:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Brazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914
identifier_str_mv Brazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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