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| 3. |  | CASTRO, V. H. M. e de; PARREIRAS, T. C.; BOLFE, E. L.; VICENTE, L. E. Mapeamento da citricultura imagens Sentinel-2 e Random Forest: o exemplo de Casa Branca. In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 20., 2023, Florianópolis. Anais [...]. São José dos Campos: Instituto Nacional de Pesquisas Espaciais, 2023. p. 2229-2232. p. 2229-2232 Editores: Douglas Francisco Marcolino Gherardi, Ieda Del´Arco Sanches, Luiz Eduardo Oliveira e Cruz de Aragão.| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Meio Ambiente. |
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| 4. | | CASTRO, V. H. M. e de C.; PARREIRAS, T. C.; BOLFE, E. L. Detecção de doenças em cultivos cítricos a partir de sensoriamento remoto: uma revisão da literatura. In: CONGRESSO NACIONAL DE ESTUDANTES DE ENGENHARIA AGRÍCOLA, AGRÍCOLA E AMBIENTAL E BIOSSISTEMAS, 35., 2022, Viçosa, MG. Agricultura digital: inovações e perspectivas da evolução digital no campo: anais. Viçosa, MG: Universidade Federal de Viçosa, [2023]. p. 35-39. CONEEAGRI 2022.| Biblioteca(s): Embrapa Agricultura Digital. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
21/01/2016 |
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Data da última atualização: |
02/03/2017 |
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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: |
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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Marc: |
LEADER 02759naa a2200397 a 4500
001 2034744
005 2017-03-02
008 2016 bl --- 0-- 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.$h[electronic resource]
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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