| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
17/11/2020 |
|
Data da última atualização: |
26/11/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SMITH, M. N.; TAYLOR, T. C.; HAREN, J. van; ROSOLEM, R.; RESTREPO-COUPE, N.; ADAMS, J.; WU, J.; OLIVEIRA JUNIOR, R. C. de; SILVA, R. da; ARAUJO, A. C. de; CAMARGO, P. B. de; HUXMAN, T. E.; SALESKA, S. R. |
|
Afiliação: |
Marielle N. Smith, University of Arizona / Michigan State University; Tyeen C. Taylor, University of Arizona / University of Michigan; Joost van Haren, University of Arizona; Rafael Rosolem, University of Bristol; Natalia Restrepo-Coupe, University of Arizona / University of Technology Sydney; John Adams, University of Arizona; Jin Wu, The University of Hong Kong; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Rodrigo da Silva, UFOPA; ALESSANDRO CARIOCA DE ARAUJO, CPATU / INPA; Plinio B. de Camargo, CENA/USP; Travis E. Huxman, University of California; Scott R. Saleska, University of Arizona. |
|
Título: |
Empirical evidence for resilience of tropical forest photosynthesis in a warmer world. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Nature Plants, v. 6, p. 1225-1230, 2020. |
|
DOI: |
https://doi.org/10.1038/s41477-020-00780-2 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Tropical forests may be vulnerable to climate change if photosynthetic carbon uptake currently operates near a high temperature limit. Predicting tropical forest function requires understanding the relative contributions of two mechanisms of high-temperature photosynthetic declines: stomatal limitation (H1), an indirect response due to temperature-associated changes in atmospheric vapour pressure deficit (VPD), and biochemical restrictions (H2), a direct temperature response. Their relative control predicts different outcomes-H1 is expected to diminish with stomatal responses to future co-occurring elevated atmospheric [CO2], whereas H2 portends declining photosynthesis with increasing temperatures. Distinguishing the two mechanisms at high temperatures is therefore critical, but difficult because VPD is highly correlated with temperature in natural settings. We used a forest mesocosm to quantify the sensitivity of tropical gross ecosystem productivity (GEP) to future temperature regimes while constraining VPD by controlling humidity. We then analytically decoupled temperature and VPD effects under current climate with flux-tower-derived GEP trends in situ from four tropical forest sites. Both approaches showed consistent, negative sensitivity of GEP to VPD but little direct response to temperature. Importantly, in the mesocosm at low VPD, GEP persisted up to 38°C, a temperature exceeding projections for tropical forests in 2100 (ref.). If elevated [CO2] mitigates VPD-induced stomatal limitation through enhanced water-use efficiency as hypothesized, tropical forest photosynthesis may have a margin of resilience to future warming. MenosTropical forests may be vulnerable to climate change if photosynthetic carbon uptake currently operates near a high temperature limit. Predicting tropical forest function requires understanding the relative contributions of two mechanisms of high-temperature photosynthetic declines: stomatal limitation (H1), an indirect response due to temperature-associated changes in atmospheric vapour pressure deficit (VPD), and biochemical restrictions (H2), a direct temperature response. Their relative control predicts different outcomes-H1 is expected to diminish with stomatal responses to future co-occurring elevated atmospheric [CO2], whereas H2 portends declining photosynthesis with increasing temperatures. Distinguishing the two mechanisms at high temperatures is therefore critical, but difficult because VPD is highly correlated with temperature in natural settings. We used a forest mesocosm to quantify the sensitivity of tropical gross ecosystem productivity (GEP) to future temperature regimes while constraining VPD by controlling humidity. We then analytically decoupled temperature and VPD effects under current climate with flux-tower-derived GEP trends in situ from four tropical forest sites. Both approaches showed consistent, negative sensitivity of GEP to VPD but little direct response to temperature. Importantly, in the mesocosm at low VPD, GEP persisted up to 38°C, a temperature exceeding projections for tropical forests in 2100 (ref.). If elevated [CO2] mitigates VPD-induce... Mostrar Tudo |
|
Thesagro: |
Floresta Tropical; Fotossíntese. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02529naa a2200301 a 4500
001 2126677
005 2020-11-26
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1038/s41477-020-00780-2$2DOI
100 1 $aSMITH, M. N.
245 $aEmpirical evidence for resilience of tropical forest photosynthesis in a warmer world.$h[electronic resource]
260 $c2020
520 $aTropical forests may be vulnerable to climate change if photosynthetic carbon uptake currently operates near a high temperature limit. Predicting tropical forest function requires understanding the relative contributions of two mechanisms of high-temperature photosynthetic declines: stomatal limitation (H1), an indirect response due to temperature-associated changes in atmospheric vapour pressure deficit (VPD), and biochemical restrictions (H2), a direct temperature response. Their relative control predicts different outcomes-H1 is expected to diminish with stomatal responses to future co-occurring elevated atmospheric [CO2], whereas H2 portends declining photosynthesis with increasing temperatures. Distinguishing the two mechanisms at high temperatures is therefore critical, but difficult because VPD is highly correlated with temperature in natural settings. We used a forest mesocosm to quantify the sensitivity of tropical gross ecosystem productivity (GEP) to future temperature regimes while constraining VPD by controlling humidity. We then analytically decoupled temperature and VPD effects under current climate with flux-tower-derived GEP trends in situ from four tropical forest sites. Both approaches showed consistent, negative sensitivity of GEP to VPD but little direct response to temperature. Importantly, in the mesocosm at low VPD, GEP persisted up to 38°C, a temperature exceeding projections for tropical forests in 2100 (ref.). If elevated [CO2] mitigates VPD-induced stomatal limitation through enhanced water-use efficiency as hypothesized, tropical forest photosynthesis may have a margin of resilience to future warming.
650 $aFloresta Tropical
650 $aFotossíntese
700 1 $aTAYLOR, T. C.
700 1 $aHAREN, J. van
700 1 $aROSOLEM, R.
700 1 $aRESTREPO-COUPE, N.
700 1 $aADAMS, J.
700 1 $aWU, J.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aSILVA, R. da
700 1 $aARAUJO, A. C. de
700 1 $aCAMARGO, P. B. de
700 1 $aHUXMAN, T. E.
700 1 $aSALESKA, S. R.
773 $tNature Plants$gv. 6, p. 1225-1230, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 12 | |
| 2. |  | AMORIM, T.; MARAZZI, B.; SOARES, A. A.; FORNI-MARTINS, E. R.; MUNIZ, C. R.; WESTERKAMP, C. Ricochet pollination in Senna (Fabaceae) - petals deflect pollen jets and promote division of labour among flower structures. Plant Biology, v. 19, n. 6, p. 951-962, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
|    |
| 4. | | SOUZA, G. A. de; CARVALHO, M. R. de O.; MARTINS, E. R.; GUEDES, R. N. C.; OLIVEIRA, L. O. de. Diversidade genética estimada com marcadores ISSR em populações brasileiras de Zabrotes subfasciatus. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 7, p. 843-849, jul. 2008. Título em inglês: Genetic diversity estimated through ISSR markers in populations of Zabrotes subfasciatus.| Biblioteca(s): Embrapa Unidades Centrais. |
|  |
| 5. | | FERNANDES, L. A.; ALVES, D. S.; RAMOS, S. J.; OLIVEIRA, F. A. de; COSTA, C. A. da; MARTINS, E. R. Nutrição mineral de plantas de maxixe-do-reino. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 7, p. 719-722, jul. 2005 Notas Científicas. Título em inglês: Mineral nutrition of Cyclanthera pedata.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 6. | | FERRARI, F.; ZANCA, A. S.; JORDÃO, H.; GIACHETTO, P. F.; OKURA, V. K.; MACCHERONI, W.; FORNI-MARTINS, E. R. Sugarcane BAC selection for BAC-FISH in currents hybrids varieties. In: CONGRESSO BRASILEIRO DE GENÉTICA, 55., 2009, Águas de Lindóia, SP. Resumos... Ribeirão Preto: Sociedade Brasileira de Genética, 2009. p. 96.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
| |
| 7. | | ALVARENGA, I. C. A.; VALADARES, R. V.; MARTINS, E. R.; OLIVEIRA, F. G.; FIGUEIREDO, L. S. de; KOBAYASHI, M. K. Water stress before harvest of pepper-rosmarin. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 46, n. 7, p. 706-711, jun. 2011 Título em português: Estresse hídrico antes da colheita de alecrim?pimenta.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 8. | | ALMEIDA, A. C.; ANDRADE, V. A.; FONSECA, F. S. A.; MACÊDO, A. A.; SANTOS, R. L.; COLEN, K. G. F.; MARTINS, E. R.; MARCELO, N. A. Acute and chronic toxicity and antimicrobial activity of the extract of Stryphnodendron adstringens (Mart.) Coville. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 37, n. 8, p. 840-846, ago. 2017. Título em português: Toxicidade aguda e crônica e atividade antimicrobiana do extrato de Stryphnodendron adstringens (Mart.) Coville.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 9. | | MARTINS, E. R. M.; BERTAGNON, H. G.; BATISTA, C. F.; GOMES, R. C.; SANTOS, K. R.; BELLINAZZI, J. B.; DELLA LIBERA, A. M. M. P. Influência da suplementação de vitaminas A, D e E na função imune de bezerros alimentados com dieta à base de feno capim tifton (Cynodon ssp.). Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 5, p. 453-459, maio. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 10. | | BRAZ, G. T.; RIBOLDI, L. B.; PINTO, M. S.; FORNI-MARTINS, E. R.; YASSITEPE, J. E. de C. T.; DANTE, R. A.; GERHARDT, I. R. Revisiting the cytogenetics of Vellozia Vand.: immunolocalization of KNL1 elucidates the chromosome number for the genus. Brazilian Journal of Botany, v. 48, n. 1, 6, Dec. 2025. Short communication.| Tipo: Nota Técnica/Nota Científica |
| Biblioteca(s): Embrapa Agricultura Digital. |
| |
| 11. | | ALMEIDA, A. C. de; MORÃO, R. P.; MARTINS, E. R.; FONSECA, F. S. A. da; SOUZA, C. N. de; PRATES, J. P. B.; OLIVEIRA, F. D. de; SILVA, L. M. V. Atividade antisséptica do óleo essencial de Lippia origanoides Cham. (Alecrim-pimenta) na presença de leite bovino. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 9, p. 905-911, set. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
| |
| 12. | | GARCIA, A. A. F.; MOLLINARI, M.; MARCONI, T. G.; SERANG, O. R.; SILVA, R. R.; VIEIRA, M. L. C.; VICENTINI, R.; COSTA, E. A.; MANCINI, M. C.; GARCIA, M. O. S.; PASTINA, M. M.; GAZAFFI, R.; MARTINS, E. R. F.; DAHMER, N.; SFORÇA, D. A.; SILVA, C. B. C.; BUNDOCK, P.; HENRY, R. J.; SOUZA, G. M.; SLUYS, M.-A. V.; LANDELL, M. G. A.; CARNEIRO, M. S.; VINCENTZ, M. A. G.; PINTO, L. R.; VENCOVSKY, R.; SOUZA, A. P. SNP genotyping allows an in-depth characterisation of the genome of sugarcane and other complex autopolyploids. Scientific Reports, v. 3, p. 1-10, 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
| |
| Registros recuperados : 12 | |
|
| Expressão de busca inválida. Verifique!!! |
|
|
