Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging

Detalhes bibliográficos
Autor(a) principal: Silveira, Helbert Rezende de Oliveira
Data de Publicação: 2015
Outros Autores: Souza, Kamila Rezende Dázio de, Alves, Jose Donizeti, Santos, Meline de Oliveira, Andrade, Cínthia Aparecida, Bomfim, Sandro Costa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/38525
Resumo: Irrigation has enhanced coffee production in several regions of Brazil. However, with the increase in irrigated crop areas, problems related to the frequent and poorly planned usage of irrigation may arise. Since there are few studies related to the physiological alterations in coffee plants exposed to water excess, we evaluated the effects of waterlogging on metabolism and partitioning of carbohydrates, levels of photosynthetic pigments and gas exchange in seedlings of two commercial coffee cultivars (Mundo Novo and Catuaí). After acclimation, seedlings with eight pairs of fully expanded leaves were cultivated under three water availability conditions: field capacity, intermittent waterlogging and continuous waterlogging. Gas exchange and the levels of chlorophyll, carotenoids and carbohydrates were evaluated during the five months after the beginning of the treatments. Waterlogging reduced the rates of photosynthesis and transpiration, leading to lower activity of the carboxylative step of photosynthesis and culminating in the reduction of carbohydrate partitioning in coffee seedlings. Although many physiological parameters were affected by waterlogging, the cultivars in our study survived for five months under stressful conditions.
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spelling Gas exchange and carbohydrate partitioning in coffee seedlings under waterloggingTrocas gasosas e particionamento de carboidratos em mudas de café sob encharcamentoWater excessPhotosynthesisReducing sugarsStomatal conductanceWater efficiency useExcesso hídricoFotossínteseAçúcares redutoresCondutância estomáticaEficiência do uso da águaIrrigation has enhanced coffee production in several regions of Brazil. However, with the increase in irrigated crop areas, problems related to the frequent and poorly planned usage of irrigation may arise. Since there are few studies related to the physiological alterations in coffee plants exposed to water excess, we evaluated the effects of waterlogging on metabolism and partitioning of carbohydrates, levels of photosynthetic pigments and gas exchange in seedlings of two commercial coffee cultivars (Mundo Novo and Catuaí). After acclimation, seedlings with eight pairs of fully expanded leaves were cultivated under three water availability conditions: field capacity, intermittent waterlogging and continuous waterlogging. Gas exchange and the levels of chlorophyll, carotenoids and carbohydrates were evaluated during the five months after the beginning of the treatments. Waterlogging reduced the rates of photosynthesis and transpiration, leading to lower activity of the carboxylative step of photosynthesis and culminating in the reduction of carbohydrate partitioning in coffee seedlings. Although many physiological parameters were affected by waterlogging, the cultivars in our study survived for five months under stressful conditions.A irrigação tem aumentado a produção de café em muitas regiões do Brasil. Entretanto, com o aumento das áreas de produção irrigadas, problemas relacionados à irrigação frequente e mal planejada podem surgir. Em decorrência de poucos estudos ligados às alterações fisiológicas em plantas de cafeeiro submetidas ao excesso de água, avaliaram-se os efeitos do encharcamento no metabolismo e no particionamento de carboidratos, níveis de pigmentos fotossintéticos e trocas gasosas em mudas de duas cultivares comerciais de café (Mundo Novo e Catuaí). Após aclimatação, as mudas, contendo oito pares de folhas completamente expandidas, foram cultivadas em três condições de disponibilidade de água: capacidade de campo, encharcamento intermitente e encharcamento contínuo. As trocas gasosas e os níveis de clorofilas, carotenóides e carboidratos foram avaliados por cinco meses, após o início dos tratamentos. O encharcamento reduziu as taxas de fotossíntese e transpiração, levando a uma menor atividade da etapa carboxilativa da fotossíntese, culminando com a redução do particionamento de carboidratos nas mudas de café. Apesar de os parâmetros analisados terem sido afetados pelo encharcamento, as cultivares deste estudo sobreviveram por cinco meses sob essas condições de estresse.Universidade Federal de Lavras2020-01-16T12:02:11Z2020-01-16T12:02:11Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVEIRA, H. R. de O. et al. Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging. Ciência e Agrotecnologia, Lavras, v. 39, n. 2, p. 138-146, Mar./Apr. 2015.http://repositorio.ufla.br/jspui/handle/1/38525Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessSilveira, Helbert Rezende de OliveiraSouza, Kamila Rezende Dázio deAlves, Jose DonizetiSantos, Meline de OliveiraAndrade, Cínthia AparecidaBomfim, Sandro Costaeng2020-01-16T12:22:41Zoai:localhost:1/38525Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-01-16T12:22:41Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
Trocas gasosas e particionamento de carboidratos em mudas de café sob encharcamento
title Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
spellingShingle Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
Silveira, Helbert Rezende de Oliveira
Water excess
Photosynthesis
Reducing sugars
Stomatal conductance
Water efficiency use
Excesso hídrico
Fotossíntese
Açúcares redutores
Condutância estomática
Eficiência do uso da água
title_short Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
title_full Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
title_fullStr Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
title_full_unstemmed Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
title_sort Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging
author Silveira, Helbert Rezende de Oliveira
author_facet Silveira, Helbert Rezende de Oliveira
Souza, Kamila Rezende Dázio de
Alves, Jose Donizeti
Santos, Meline de Oliveira
Andrade, Cínthia Aparecida
Bomfim, Sandro Costa
author_role author
author2 Souza, Kamila Rezende Dázio de
Alves, Jose Donizeti
Santos, Meline de Oliveira
Andrade, Cínthia Aparecida
Bomfim, Sandro Costa
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Silveira, Helbert Rezende de Oliveira
Souza, Kamila Rezende Dázio de
Alves, Jose Donizeti
Santos, Meline de Oliveira
Andrade, Cínthia Aparecida
Bomfim, Sandro Costa
dc.subject.por.fl_str_mv Water excess
Photosynthesis
Reducing sugars
Stomatal conductance
Water efficiency use
Excesso hídrico
Fotossíntese
Açúcares redutores
Condutância estomática
Eficiência do uso da água
topic Water excess
Photosynthesis
Reducing sugars
Stomatal conductance
Water efficiency use
Excesso hídrico
Fotossíntese
Açúcares redutores
Condutância estomática
Eficiência do uso da água
description Irrigation has enhanced coffee production in several regions of Brazil. However, with the increase in irrigated crop areas, problems related to the frequent and poorly planned usage of irrigation may arise. Since there are few studies related to the physiological alterations in coffee plants exposed to water excess, we evaluated the effects of waterlogging on metabolism and partitioning of carbohydrates, levels of photosynthetic pigments and gas exchange in seedlings of two commercial coffee cultivars (Mundo Novo and Catuaí). After acclimation, seedlings with eight pairs of fully expanded leaves were cultivated under three water availability conditions: field capacity, intermittent waterlogging and continuous waterlogging. Gas exchange and the levels of chlorophyll, carotenoids and carbohydrates were evaluated during the five months after the beginning of the treatments. Waterlogging reduced the rates of photosynthesis and transpiration, leading to lower activity of the carboxylative step of photosynthesis and culminating in the reduction of carbohydrate partitioning in coffee seedlings. Although many physiological parameters were affected by waterlogging, the cultivars in our study survived for five months under stressful conditions.
publishDate 2015
dc.date.none.fl_str_mv 2015
2020-01-16T12:02:11Z
2020-01-16T12:02:11Z
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 SILVEIRA, H. R. de O. et al. Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging. Ciência e Agrotecnologia, Lavras, v. 39, n. 2, p. 138-146, Mar./Apr. 2015.
http://repositorio.ufla.br/jspui/handle/1/38525
identifier_str_mv SILVEIRA, H. R. de O. et al. Gas exchange and carbohydrate partitioning in coffee seedlings under waterlogging. Ciência e Agrotecnologia, Lavras, v. 39, n. 2, p. 138-146, Mar./Apr. 2015.
url http://repositorio.ufla.br/jspui/handle/1/38525
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
publisher.none.fl_str_mv Universidade Federal de Lavras
dc.source.none.fl_str_mv Ciência e Agrotecnologia
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
_version_ 1807835209431777280

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