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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
10/02/2016 |
Data da última atualização: |
18/03/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
RODRIGUES, W. P.; MARTINS, M. Q.; FORTUNATO, A. S.; MARTINS, L. D.; PARTELLI, F. L.; CAMPOSTRINI, E.; SEMEDO, J. N.; PAIS, I. P.; SIMÕES-COSTA, S. C.; LEITÃO, A. E.; TOMAZ, M. A.; COLWEL, F.; SCOTTI-CAMPOS, P.; RODRIGUES, A. P.; GHINI, R.; LIDON, F. C.; MATTA, F. M. da; RAMALHO, J. C. |
Afiliação: |
W. P. RODRIGUES, Centro de Ciências e Tecnologias Agropecuárias, Univ. Estadual de Norte Fluminense; M. Q. MARTINS, PlantStress&Biodiversity, BioTrop, Inst. Inv. Científica Tropical, I.P., Oeiras, Portugal; A. S. FORTUNATO, Centro Ciências Agrárias, Univ. Federal do Espírito Santo, Alegre, ES; L. D. MARTINS, Centro Ciências Agrárias, Univ. Federal do Espírito Santo, Alegre, ES; F. L. PARTELLI, Centro Universitário Norte do Espírito Santo. Univ.Federal do Espírito Santo, ES; E. CAMPOSTRINI, Centro de Ciências e Tecnologias Agropecuárias, Univ. Estadual de Norte Fluminense; J. N. SEMEDO, URGEMP, Instituto Nacional Investigação Agrária e Veterinária, I.P., Oeiras, Portugal.; I. P. PAIS, CEF, DRAT, Instituto Superior de Agronomia, Univ. Lisboa, Portugal; S. C. SIMÕES-COSTA, Plant Stress & Biodiversity, BioTrop, Inst. Inv. Científica Tropical, I.P., Oeiras, Portugal; A. E. LEITÃO, Plant Stress & Biodiversity, BioTrop, Inst. Inv. Científica Tropical, I.P., Oeiras, Portugal; M. A. TOMAZ, Centro Universitário Norte do Espírito Santo. Univ.Federal do Espírito Santo, ES, Brasil; Plant Stress & Biodiversity, BioTrop, Inst. Inv. Científica Tropical, I.P., Oeiras, Portugal; P. SCOTTI-CAMPOS, CEF, DRAT, Instituto Superior de Agronomia, Univ. Lisboa, Portugal; A. P. RODRIGUES, CEF, DRAT, Instituto Superior de Agronomia, Univ. Lisboa, Portugal; RAQUEL GHINI, CNPMA; F. C. LIDON, GeoBioTec, Faculdade de Ciências Tecnologia, Univ. Nova Lisboa, Caparica, Portugal; F. M. da MATTA, UFV; J. C. RAMALHO, Plant Stress & Biodiversity, BioTrop, Inst. Inv. Científica Tropical, I.P., Oeiras, Portugal. |
Título: |
Effect of high [CO2] and temperature on the photosynthetic enzymes and electron transport of Coffea Arabica L.. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 15.; BRAZILIAN-ISRAELI PLANT SCIENCES CONFERENCE, 1., 2015, Foz do Iguaçu. Abstracts... Foz do Iguaçu: Sociedade Brasileira de Fisiologia Vegetal, 2015. Ref. D-053. |
Idioma: |
Inglês |
Conteúdo: |
It is expected that future climate changes and global warming conditions will limit the coffee crop yields. However, the real effects of enhanced air [CO2] and temperature on this plant remain completely unknown. Therefore, this work studied the impact of such environmental changes on the photosynthetic machinery of Coffea arabica L. cv. Icatu. Plants were grown for 1 year under controlled conditions (temperature, RH, irradiance, photoperiod), at 380 or 700 ?L CO2 L-1 air, without nutrient, water and root space limitations, and then subjected to temperature increase (0.5ºC/day) to 42/34ºC. Thylakoid electron transport involving PSI and II, and enzyme activities (RuBisCO and RuB5PK) were assessed at 25/20ºC, 31/25ºC, 37/30ºC and 42/34ºC.The results showed a marginal impact until 37 ºC irrespective of [CO2] conditions, configuring a clear tolerance to supra-optimal temperatures. Also, a higher metabolic performance was observed in the plants under high [CO2]. Only at 42 ºC the tolerance limit was exceeded, as shown by significant impacts in all parameters, particularly in enzymes, but under elevated [CO2] a better performance was preserved regarding the photosystems functioning. Our findings showed that the elevated [CO2] allowed maintenance of higher metabolic activity and seemed to some extent mitigate the heat impact at the photosystems level, what is quite relevant in a context of predict global warming scenarios. This work was supported by Portuguese funds from Fundação para a Ciência e a Tecnologia, through the project PTDC/AGR-PRO/3386/2012. MenosIt is expected that future climate changes and global warming conditions will limit the coffee crop yields. However, the real effects of enhanced air [CO2] and temperature on this plant remain completely unknown. Therefore, this work studied the impact of such environmental changes on the photosynthetic machinery of Coffea arabica L. cv. Icatu. Plants were grown for 1 year under controlled conditions (temperature, RH, irradiance, photoperiod), at 380 or 700 ?L CO2 L-1 air, without nutrient, water and root space limitations, and then subjected to temperature increase (0.5ºC/day) to 42/34ºC. Thylakoid electron transport involving PSI and II, and enzyme activities (RuBisCO and RuB5PK) were assessed at 25/20ºC, 31/25ºC, 37/30ºC and 42/34ºC.The results showed a marginal impact until 37 ºC irrespective of [CO2] conditions, configuring a clear tolerance to supra-optimal temperatures. Also, a higher metabolic performance was observed in the plants under high [CO2]. Only at 42 ºC the tolerance limit was exceeded, as shown by significant impacts in all parameters, particularly in enzymes, but under elevated [CO2] a better performance was preserved regarding the photosystems functioning. Our findings showed that the elevated [CO2] allowed maintenance of higher metabolic activity and seemed to some extent mitigate the heat impact at the photosystems level, what is quite relevant in a context of predict global warming scenarios. This work was supported by Portuguese funds from Fundação p... Mostrar Tudo |
Palavras-Chave: |
CO2 effect; Coffee plant. |
Thesagro: |
Coffea Arábica. |
Thesaurus Nal: |
Carbon dioxide; Climate change; Heat. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/139125/1/2015RA-040.pdf
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Marc: |
LEADER 02836nam a2200385 a 4500 001 2036437 005 2016-03-18 008 2015 bl uuuu u00u1 u #d 100 1 $aRODRIGUES, W. P. 245 $aEffect of high [CO2] and temperature on the photosynthetic enzymes and electron transport of Coffea Arabica L..$h[electronic resource] 260 $aIn: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 15.; BRAZILIAN-ISRAELI PLANT SCIENCES CONFERENCE, 1., 2015, Foz do Iguaçu. Abstracts... Foz do Iguaçu: Sociedade Brasileira de Fisiologia Vegetal, 2015. Ref. D-053.$c2015 520 $aIt is expected that future climate changes and global warming conditions will limit the coffee crop yields. However, the real effects of enhanced air [CO2] and temperature on this plant remain completely unknown. Therefore, this work studied the impact of such environmental changes on the photosynthetic machinery of Coffea arabica L. cv. Icatu. Plants were grown for 1 year under controlled conditions (temperature, RH, irradiance, photoperiod), at 380 or 700 ?L CO2 L-1 air, without nutrient, water and root space limitations, and then subjected to temperature increase (0.5ºC/day) to 42/34ºC. Thylakoid electron transport involving PSI and II, and enzyme activities (RuBisCO and RuB5PK) were assessed at 25/20ºC, 31/25ºC, 37/30ºC and 42/34ºC.The results showed a marginal impact until 37 ºC irrespective of [CO2] conditions, configuring a clear tolerance to supra-optimal temperatures. Also, a higher metabolic performance was observed in the plants under high [CO2]. Only at 42 ºC the tolerance limit was exceeded, as shown by significant impacts in all parameters, particularly in enzymes, but under elevated [CO2] a better performance was preserved regarding the photosystems functioning. Our findings showed that the elevated [CO2] allowed maintenance of higher metabolic activity and seemed to some extent mitigate the heat impact at the photosystems level, what is quite relevant in a context of predict global warming scenarios. This work was supported by Portuguese funds from Fundação para a Ciência e a Tecnologia, through the project PTDC/AGR-PRO/3386/2012. 650 $aCarbon dioxide 650 $aClimate change 650 $aHeat 650 $aCoffea Arábica 653 $aCO2 effect 653 $aCoffee plant 700 1 $aMARTINS, M. Q. 700 1 $aFORTUNATO, A. S. 700 1 $aMARTINS, L. D. 700 1 $aPARTELLI, F. L. 700 1 $aCAMPOSTRINI, E. 700 1 $aSEMEDO, J. N. 700 1 $aPAIS, I. P. 700 1 $aSIMÕES-COSTA, S. C. 700 1 $aLEITÃO, A. E. 700 1 $aTOMAZ, M. A. 700 1 $aCOLWEL, F. 700 1 $aSCOTTI-CAMPOS, P. 700 1 $aRODRIGUES, A. P. 700 1 $aGHINI, R. 700 1 $aLIDON, F. C. 700 1 $aMATTA, F. M. da 700 1 $aRAMALHO, J. C.
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Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
27/12/2018 |
Data da última atualização: |
09/01/2019 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
SERRA, A. P.; MARCHETTI, M. E.; DUPAS, E.; CARDUCCI, C. E.; SILVA, E. F. da; PINHEIRO, E. R. |
Afiliação: |
ADEMAR PEREIRA SERRA, CNPGC; Marlene Estevão Marchetti; Elisângela Dupas; Carla Eloize Carducci; Eulene Francisco da Silva; Elaine Reis Pinheiro. |
Título: |
Phosphorus in Forage Production. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: EDVAN, R. L. New Perspectives in Forage Crops. London, United Kingdom: IntechOpen, 2018 |
Páginas: |
p. 340 |
Idioma: |
Inglês |
Conteúdo: |
The aim in developing this work was to summarize information about phosphorus (P) limitation and dynamic in tropical soils for forage grasses production. The major idea is direct information about limited factors affecting P availability, dynamic of P fractionation, P pools, P forms, P use efficiency, and the 4R?s Nutrient Stewardship? for P-fertilizer in forage grasses. Organizing these sub-headings in a chapter can result in interesting of how P behaves under tropical soils, in order to take decision to manage P-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits. As the most limiting nutrient in tropical soils, P-fertilizer in forage grasses can be more effective if the best management practices are followed. In order to avoid excess P-fertilizer application in soil or P-fertilizer response with low efficiency, it is important to understand the P dynamic and the factors associated with P adsorption in soil. Even with low amount of P requested to forages species, the P available in soil is quite low, and this knowledge is primordial to direct P-fertilizer. Tropical soils are quite limited in P content, due to the natural formation with parental material poor in P content and highly weathering condition. Thus, in order to improve phosphorus use efficiency, the 4R?s must be followed to improve P use efficiency (PUE). It is not easy to improve PUE in highly weathering soil with high buffering capacity; however, all the combination of best management practices for P-fertilizer application can result in better use efficiency. Based on the scarcity of natural P-sources in the whole world, the use of alternative P-sources should be incentivized, and more researches about this issue are need for better understanding. MenosThe aim in developing this work was to summarize information about phosphorus (P) limitation and dynamic in tropical soils for forage grasses production. The major idea is direct information about limited factors affecting P availability, dynamic of P fractionation, P pools, P forms, P use efficiency, and the 4R?s Nutrient Stewardship? for P-fertilizer in forage grasses. Organizing these sub-headings in a chapter can result in interesting of how P behaves under tropical soils, in order to take decision to manage P-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits. As the most limiting nutrient in tropical soils, P-fertilizer in forage grasses can be more effective if the best management practices are followed. In order to avoid excess P-fertilizer application in soil or P-fertilizer response with low efficiency, it is important to understand the P dynamic and the factors associated with P adsorption in soil. Even with low amount of P requested to forages species, the P available in soil is quite low, and this knowledge is primordial to direct P-fertilizer. Tropical soils are quite limited in P content, due to the natural formation with parental material poor in P content and highly weathering condition. Thus, in order to improve phosphorus use efficiency, the 4R?s must be followed to improve P use efficiency (PUE). It is not easy to improve PUE in highly weathering soil with high buffering capacity; however, all the combinat... Mostrar Tudo |
Palavras-Chave: |
P-use efficiency. |
Thesagro: |
Brachiaria sp; Panicum Maximum. |
Thesaurus NAL: |
Soil fertility; Stylosanthes. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189381/1/Phosporus-in-forage-production.pdf
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Marc: |
LEADER 02491naa a2200253 a 4500 001 2102563 005 2019-01-09 008 2018 bl uuuu u00u1 u #d 100 1 $aSERRA, A. P. 245 $aPhosphorus in Forage Production.$h[electronic resource] 260 $c2018 300 $ap. 340 520 $aThe aim in developing this work was to summarize information about phosphorus (P) limitation and dynamic in tropical soils for forage grasses production. The major idea is direct information about limited factors affecting P availability, dynamic of P fractionation, P pools, P forms, P use efficiency, and the 4R?s Nutrient Stewardship? for P-fertilizer in forage grasses. Organizing these sub-headings in a chapter can result in interesting of how P behaves under tropical soils, in order to take decision to manage P-fertilizer to accomplish forage grasses production with social, economic, and environmental benefits. As the most limiting nutrient in tropical soils, P-fertilizer in forage grasses can be more effective if the best management practices are followed. In order to avoid excess P-fertilizer application in soil or P-fertilizer response with low efficiency, it is important to understand the P dynamic and the factors associated with P adsorption in soil. Even with low amount of P requested to forages species, the P available in soil is quite low, and this knowledge is primordial to direct P-fertilizer. Tropical soils are quite limited in P content, due to the natural formation with parental material poor in P content and highly weathering condition. Thus, in order to improve phosphorus use efficiency, the 4R?s must be followed to improve P use efficiency (PUE). It is not easy to improve PUE in highly weathering soil with high buffering capacity; however, all the combination of best management practices for P-fertilizer application can result in better use efficiency. Based on the scarcity of natural P-sources in the whole world, the use of alternative P-sources should be incentivized, and more researches about this issue are need for better understanding. 650 $aSoil fertility 650 $aStylosanthes 650 $aBrachiaria sp 650 $aPanicum Maximum 653 $aP-use efficiency 700 1 $aMARCHETTI, M. E. 700 1 $aDUPAS, E. 700 1 $aCARDUCCI, C. E. 700 1 $aSILVA, E. F. da 700 1 $aPINHEIRO, E. R. 773 $tIn: EDVAN, R. L. New Perspectives in Forage Crops. London, United Kingdom: IntechOpen, 2018
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