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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/01/2016 |
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Data da última atualização: |
18/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DaMATTA, F. M.; GODOY, A. G.; MENEZES-SILVA, P. E.; MARTINS, S. C. V.; SANGLARD, L. M. V. P.; MORAIS, L. E.; TORRE-NETO, A.; GHINI, R. |
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Afiliação: |
FABIO MURILO DAMATTA, UFV; ALICE GONTIJO DE GODOY, UFV; PAULO EDUARDO DE MENEZES SILVA, UFV; SAMUEL CORDEIRO VITOR MARTINS, UFV; LILIAN MARIA VINCIS PEREIRA SANGLARD, UFV; LEANDRO ELIAS MORAIS, UFV; ANDRE TORRE NETO, CNPDIA; RAQUEL GHINI, CNPMA. |
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Título: |
Sustained enhancement of photosynthesis in coffee trees grown under free-air CO2 enrichment conditions: disentangling the contributions of stomatal, mesophyll, and biochemical limitations. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Experimental Botany, London, v. 67, n. 1, p. 341-352, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Coffee (Coffea spp.), a globally traded commodity, is a slow-growing tropical tree species that displays an improved photosynthetic performance when grown under elevated atmospheric CO2 concentrations ([CO2]). To investigate the mechanisms underlying this response, two commercial coffee cultivars (Catuaí and Obatã) were grown using the first free-air CO2 enrichment (FACE) facility in Latin America. Measurements were conducted in two contrasting growth seasons, which were characterized by the high (February) and low (August) sink demand. Elevated [CO2] led to increases in net photosynthetic rates (A) in parallel with decreased photorespiration rates, with no photochemical limitations to A. The stimulation of A by elevated CO2 supply was more prominent in August (56% on average) than in February (40% on average). Overall, the stomatal and mesophyll conductances, as well as the leaf nitrogen and phosphorus concentrations, were unresponsive to the treatments. Photosynthesis was strongly limited by diffusional constraints, particularly at the stomata level, and this pattern was little, if at all, affected by elevated [CO2]. Relative to February, starch pools (but not soluble sugars) increased remarkably (>500%) in August, with no detectable alteration in the maximum carboxylation capacity estimated on a chloroplast [CO2] basis. Upregulation of A by elevated [CO2] took place with no signs of photosynthetic downregulation, even during the period of low sink demand, when acclimation would be expected to be greatest. MenosAbstract: Coffee (Coffea spp.), a globally traded commodity, is a slow-growing tropical tree species that displays an improved photosynthetic performance when grown under elevated atmospheric CO2 concentrations ([CO2]). To investigate the mechanisms underlying this response, two commercial coffee cultivars (Catuaí and Obatã) were grown using the first free-air CO2 enrichment (FACE) facility in Latin America. Measurements were conducted in two contrasting growth seasons, which were characterized by the high (February) and low (August) sink demand. Elevated [CO2] led to increases in net photosynthetic rates (A) in parallel with decreased photorespiration rates, with no photochemical limitations to A. The stimulation of A by elevated CO2 supply was more prominent in August (56% on average) than in February (40% on average). Overall, the stomatal and mesophyll conductances, as well as the leaf nitrogen and phosphorus concentrations, were unresponsive to the treatments. Photosynthesis was strongly limited by diffusional constraints, particularly at the stomata level, and this pattern was little, if at all, affected by elevated [CO2]. Relative to February, starch pools (but not soluble sugars) increased remarkably (>500%) in August, with no detectable alteration in the maximum carboxylation capacity estimated on a chloroplast [CO2] basis. Upregulation of A by elevated [CO2] took place with no signs of photosynthetic downregulation, even during the period of low sink demand, when a... Mostrar Tudo |
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Palavras-Chave: |
Coffea arabica L; Photosynthetic acclimation; Photosynthetic limitations; Startch. |
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Thesagro: |
Café; Clima; Dióxido de carbono; Fotossíntese; Mudança Climática. |
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Thesaurus Nal: |
carbohydrates; Carbon dioxide; Climate change; face; nitrogen; Photosynthesis; starch. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/137597/1/2015AP34.pdf
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Marc: |
LEADER 02736naa a2200397 a 4500
001 2034947
005 2017-02-18
008 2016 bl uuuu u00u1 u #d
100 1 $aDaMATTA, F. M.
245 $aSustained enhancement of photosynthesis in coffee trees grown under free-air CO2 enrichment conditions$bdisentangling the contributions of stomatal, mesophyll, and biochemical limitations.
260 $c2016
520 $aAbstract: Coffee (Coffea spp.), a globally traded commodity, is a slow-growing tropical tree species that displays an improved photosynthetic performance when grown under elevated atmospheric CO2 concentrations ([CO2]). To investigate the mechanisms underlying this response, two commercial coffee cultivars (Catuaí and Obatã) were grown using the first free-air CO2 enrichment (FACE) facility in Latin America. Measurements were conducted in two contrasting growth seasons, which were characterized by the high (February) and low (August) sink demand. Elevated [CO2] led to increases in net photosynthetic rates (A) in parallel with decreased photorespiration rates, with no photochemical limitations to A. The stimulation of A by elevated CO2 supply was more prominent in August (56% on average) than in February (40% on average). Overall, the stomatal and mesophyll conductances, as well as the leaf nitrogen and phosphorus concentrations, were unresponsive to the treatments. Photosynthesis was strongly limited by diffusional constraints, particularly at the stomata level, and this pattern was little, if at all, affected by elevated [CO2]. Relative to February, starch pools (but not soluble sugars) increased remarkably (>500%) in August, with no detectable alteration in the maximum carboxylation capacity estimated on a chloroplast [CO2] basis. Upregulation of A by elevated [CO2] took place with no signs of photosynthetic downregulation, even during the period of low sink demand, when acclimation would be expected to be greatest.
650 $acarbohydrates
650 $aCarbon dioxide
650 $aClimate change
650 $aface
650 $anitrogen
650 $aPhotosynthesis
650 $astarch
650 $aCafé
650 $aClima
650 $aDióxido de carbono
650 $aFotossíntese
650 $aMudança Climática
653 $aCoffea arabica L
653 $aPhotosynthetic acclimation
653 $aPhotosynthetic limitations
653 $aStartch
700 1 $aGODOY, A. G.
700 1 $aMENEZES-SILVA, P. E.
700 1 $aMARTINS, S. C. V.
700 1 $aSANGLARD, L. M. V. P.
700 1 $aMORAIS, L. E.
700 1 $aTORRE-NETO, A.
700 1 $aGHINI, R.
773 $tJournal of Experimental Botany, London$gv. 67, n. 1, p. 341-352, 2016.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
15/02/2011 |
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Data da última atualização: |
15/02/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
VALERIO, J. R.; PISTORI, M. G. B.; SOUZA, M. S. de; OLIVEIRA, M. da C. M.; CHERMOUTH, K. da S. |
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Afiliação: |
JOSE RAUL VALERIO, CNPGC; MELISSA GINDRI BRAGATO PISTORI, UCDB; MIRIAN SILVÉRIA DE SOUZA, UFGD; MARLENE DA CONCEIÇÃO MONTEIRO OLIVEIRA, AGRAER/MS; KATYUCE DA SILVA CHERMOUTH, BOLSISTA CNPGC. |
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Título: |
Avalição de híbridos e introduções do gênero Brachiaria quanto à resistência à cigarrinha Mahanarva spectabilis. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia, 2010. |
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Páginas: |
1 p. |
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Idioma: |
Português |
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Thesagro: |
Brachiaria; Cigarrinha. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00684naa a2200193 a 4500
001 1877150
005 2011-02-15
008 2010 bl uuuu u00u1 u #d
100 1 $aVALERIO, J. R.
245 $aAvalição de híbridos e introduções do gênero Brachiaria quanto à resistência à cigarrinha Mahanarva spectabilis.$h[electronic resource]
260 $c2010
300 $a1 p.
650 $aBrachiaria
650 $aCigarrinha
700 1 $aPISTORI, M. G. B.
700 1 $aSOUZA, M. S. de
700 1 $aOLIVEIRA, M. da C. M.
700 1 $aCHERMOUTH, K. da S.
773 $tIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia, 2010.
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