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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
15/02/2019 |
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Data da última atualização: |
19/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RAKOCEVIC, M.; RIBEIRO, R. V.; MARCHIORI, P. E. R.; FILIZOLA, H. F.; BATISTA, E. R. |
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Afiliação: |
MIROSLAVA RAKOCEVIC; RAFAEL VASCONCELOS RIBEIRO, IB-UNICAMP; PAULO EDUARDO RIBEIRO MARCHIORI, UFLA; HELOISA FERREIRA FILIZOLA, CNPMA; EUNICE REIS BATISTA, CNPMA. |
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Título: |
Structural and functional changes in coffee trees after 4 years under free air CO2 enrichment. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Annals of Botany, v. 121, n. 5, p. 1065-1078, 2018. |
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DOI: |
https://doi.org/10.1093/aob/mcy011 |
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Idioma: |
Inglês |
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Conteúdo: |
Background 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 ?L 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. MenosBackground 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 ?L 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 l... Mostrar Tudo |
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Thesagro: |
Área Foliar; Café; Dióxido de Carbono. |
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Thesaurus NAL: |
Carbon dioxide enrichment; Climate change; Coffea; Leaf area; Plant architecture; Stomatal conductance; Transpiration. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02423naa a2200301 a 4500
001 2106099
005 2019-02-19
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1093/aob/mcy011$2DOI
100 1 $aRAKOCEVIC, M.
245 $aStructural and functional changes in coffee trees after 4 years under free air CO2 enrichment.$h[electronic resource]
260 $c2018
520 $aBackground 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 ?L 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.
650 $aCarbon dioxide enrichment
650 $aClimate change
650 $aCoffea
650 $aLeaf area
650 $aPlant architecture
650 $aStomatal conductance
650 $aTranspiration
650 $aÁrea Foliar
650 $aCafé
650 $aDióxido de Carbono
700 1 $aRIBEIRO, R. V.
700 1 $aMARCHIORI, P. E. R.
700 1 $aFILIZOLA, H. F.
700 1 $aBATISTA, E. R.
773 $tAnnals of Botany$gv. 121, n. 5, p. 1065-1078, 2018.
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