Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/5939 |
Resumo: | Abstract – We have compared the metabolic responses of leaves and roots of two Eucalyptus globulus L. clones CN5 and ST51 that differ in their sensitivity to water deficits (ST51 is more drought sensitive), with regard to the effect of chilling (10/5 ◦C, day/night). We studied changes in growth, osmotic potential and osmotically active compounds, soluble proteins, leaf pigments, and membrane lipid composition. Our data showed that both clones have the ability to acclimatize to chilling temperatures. As a result of 10 days of acclimation, an increase of soluble sugars in leaves of treated plants of both clones was observed that disappeared later on. Differences between clones were observed in the photosynthetic pigments and soluble protein content which were more stable in CN5 under chilling. It also was apparent that CN5 presented a less negative predawn water potential (ψpd) and a higher leaf turgor than ST51 throughout the chilling treatment. In the case of the CN5, increased total lipids (TFA) and concomitant increase of linolenic acid (C18:3) in leaves after acclimatization may be related to a better clone performance under chilling temperatures. Moreover, a higher constitutive investment in roots in the case of CN5 as compared to ST51 may benefit new root regeneration under low temperatures favoring growth after cold Mediterranean winter. |
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Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistanceEucalyptus globuluscarbohydrateschillinglipidsemebranesAbstract – We have compared the metabolic responses of leaves and roots of two Eucalyptus globulus L. clones CN5 and ST51 that differ in their sensitivity to water deficits (ST51 is more drought sensitive), with regard to the effect of chilling (10/5 ◦C, day/night). We studied changes in growth, osmotic potential and osmotically active compounds, soluble proteins, leaf pigments, and membrane lipid composition. Our data showed that both clones have the ability to acclimatize to chilling temperatures. As a result of 10 days of acclimation, an increase of soluble sugars in leaves of treated plants of both clones was observed that disappeared later on. Differences between clones were observed in the photosynthetic pigments and soluble protein content which were more stable in CN5 under chilling. It also was apparent that CN5 presented a less negative predawn water potential (ψpd) and a higher leaf turgor than ST51 throughout the chilling treatment. In the case of the CN5, increased total lipids (TFA) and concomitant increase of linolenic acid (C18:3) in leaves after acclimatization may be related to a better clone performance under chilling temperatures. Moreover, a higher constitutive investment in roots in the case of CN5 as compared to ST51 may benefit new root regeneration under low temperatures favoring growth after cold Mediterranean winter.INRA/EDP SciencesRepositório da Universidade de LisboaShvaleva, A.Silva, F.C.Scotti, P.Oufir, M.Hausman, J.-F.Cedric, G.Ramos, P.Almeida, M.H.Rodrigues, M.L.Pereira, J.S.Chaves, M.M.2013-09-04T10:32:45Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/5939eng"Annals of Forest Science". ISSN 1297-966X. 65(2) (2008) art.2041297-966Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:36:48Zoai:www.repository.utl.pt:10400.5/5939Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:53:21.210207Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
title |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
spellingShingle |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance Shvaleva, A. Eucalyptus globulus carbohydrates chilling lipids emebranes |
title_short |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
title_full |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
title_fullStr |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
title_full_unstemmed |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
title_sort |
Physiological and biochemical responses to low non-freezing temperature of two Eucalyptus globulus clones differing in drought resistance |
author |
Shvaleva, A. |
author_facet |
Shvaleva, A. Silva, F.C. Scotti, P. Oufir, M. Hausman, J.-F. Cedric, G. Ramos, P. Almeida, M.H. Rodrigues, M.L. Pereira, J.S. Chaves, M.M. |
author_role |
author |
author2 |
Silva, F.C. Scotti, P. Oufir, M. Hausman, J.-F. Cedric, G. Ramos, P. Almeida, M.H. Rodrigues, M.L. Pereira, J.S. Chaves, M.M. |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Shvaleva, A. Silva, F.C. Scotti, P. Oufir, M. Hausman, J.-F. Cedric, G. Ramos, P. Almeida, M.H. Rodrigues, M.L. Pereira, J.S. Chaves, M.M. |
dc.subject.por.fl_str_mv |
Eucalyptus globulus carbohydrates chilling lipids emebranes |
topic |
Eucalyptus globulus carbohydrates chilling lipids emebranes |
description |
Abstract – We have compared the metabolic responses of leaves and roots of two Eucalyptus globulus L. clones CN5 and ST51 that differ in their sensitivity to water deficits (ST51 is more drought sensitive), with regard to the effect of chilling (10/5 ◦C, day/night). We studied changes in growth, osmotic potential and osmotically active compounds, soluble proteins, leaf pigments, and membrane lipid composition. Our data showed that both clones have the ability to acclimatize to chilling temperatures. As a result of 10 days of acclimation, an increase of soluble sugars in leaves of treated plants of both clones was observed that disappeared later on. Differences between clones were observed in the photosynthetic pigments and soluble protein content which were more stable in CN5 under chilling. It also was apparent that CN5 presented a less negative predawn water potential (ψpd) and a higher leaf turgor than ST51 throughout the chilling treatment. In the case of the CN5, increased total lipids (TFA) and concomitant increase of linolenic acid (C18:3) in leaves after acclimatization may be related to a better clone performance under chilling temperatures. Moreover, a higher constitutive investment in roots in the case of CN5 as compared to ST51 may benefit new root regeneration under low temperatures favoring growth after cold Mediterranean winter. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 2008-01-01T00:00:00Z 2013-09-04T10:32:45Z |
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 |
http://hdl.handle.net/10400.5/5939 |
url |
http://hdl.handle.net/10400.5/5939 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Annals of Forest Science". ISSN 1297-966X. 65(2) (2008) art.204 1297-966X |
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 |
INRA/EDP Sciences |
publisher.none.fl_str_mv |
INRA/EDP Sciences |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799131009404370944 |