Structural and functional changes in coffee trees after 4 years under free air CO2 enrichment

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorRakocevic, Miroslava-
Autor(es): dc.creatorRibeiro, Rafael Vasconcelos-
Autor(es): dc.creatorMarchiori, Paulo Eduardo Ribeiro-
Autor(es): dc.creatorFilizola, Heloisa Ferreira-
Autor(es): dc.creatorBatista, Eunice Reis-
Data de aceite: dc.date.accessioned2026-02-09T11:44:34Z-
Data de disponibilização: dc.date.available2026-02-09T11:44:34Z-
Data de envio: dc.date.issued2019-04-26-
Data de envio: dc.date.issued2019-04-26-
Data de envio: dc.date.issued2018-04-18-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/33911-
Fonte completa do material: dc.identifierhttps://academic.oup.com/aob/article/121/5/1065/4856813-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1146462-
Descrição: dc.descriptionBackground and Aims: climate forecasts suggest that [CO2] in the atmosphere will continue to increase. Structural and ecophysiological responses to elevated air [CO2] (e[CO2]) in tree species are contradictory due to species-dependent responses and relatively short-term experiments. It was hypothesized that long-term exposure (4 year) to e[CO2] would change canopy structure and function of Coffea arabica trees. Methods: coffee plants were grown in a FACE (free air CO2 enrichment) facility under two air [CO2]: actual and elevated (actual + approx. 200 μL CO2 L–1). Plants were codified following the VPlants methodology to obtain coffee mock-ups. Plant canopies were separated into three 50 cm thick layers over a vertical profile to evaluate their structure and photosynthesis, using functional–structural plant modelling. Key Results: leaf area was strongly reduced on the bottom and upper canopy layers, and increased soil carbon concentration suggested changes in carbon partitioning of coffee trees under e[CO2]. Increased air [CO2] stimulated stomatal conductance and leaf photosynthesis at the middle and upper canopy layers, increasing water-use efficiency. Under e[CO2], plants showed reduced diameter of the second-order axes and higher investment in the youngest third to fifth-order axes. Conclusions: the responses of Arabica coffee grown under long-term exposure to e[CO2] integrated structural and functional modifications, which balanced leaf area loss through improvements in leaf and whole-plant photosynthesis.-
Idioma: dc.languageen-
Publicador: dc.publisherOxford University Press (OUP)-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceAnnals of Botany-
Palavras-chave: dc.subjectCoffea arabica-
Palavras-chave: dc.subjectFACE-
Palavras-chave: dc.subjectLeaf area-
Palavras-chave: dc.subjectMetamer-
Palavras-chave: dc.subjectPhotosynthetic light response curve-
Palavras-chave: dc.subjectPlant architecture-
Palavras-chave: dc.subjectStomatal conductance-
Palavras-chave: dc.subjectTranspiration-
Palavras-chave: dc.subjectVertical profile-
Palavras-chave: dc.subjectVPlants-
Palavras-chave: dc.subjectWhole-plant photosynthesis-
Palavras-chave: dc.subjectFree air CO2 enrichment (FACE)-
Título: dc.titleStructural and functional changes in coffee trees after 4 years under free air CO2 enrichment-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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