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How does leaf physiological acclimation impact forage production and quality of a warmed managed pasture of Stylosanthes capitata under different conditions of soil water availability?
Habermann, Eduardo; Dias de Oliveira, Eduardo A; Delvecchio, Gustavo; Belisário, Rafael; Barreto, Rafael Ferreira; Viciedo, Dilier Olivera; Rossingnoli, Nádia Oliveira; de Pinho Costa, Kátia Aparecida; de Mello Prado, Renato; Gonzalez-Meler, Miquel; Martinez, Carlos Alberto.
Afiliação
  • Habermann E; Department of Biology, FFCLRP, University of Sao Paulo, Ribeirão Preto, São Paulo, Brazil.
  • Dias de Oliveira EA; Ecology and Evolution, Department of Biological Sciences, University of Illinois, Chicago, IL, United States.
  • Delvecchio G; Department of Biology, FFCLRP, University of Sao Paulo, Ribeirão Preto, São Paulo, Brazil.
  • Belisário R; Department of Biology, FFCLRP, University of Sao Paulo, Ribeirão Preto, São Paulo, Brazil.
  • Barreto RF; Department of Soils and Fertilizers, School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo State University, São Paulo, Brazil.
  • Viciedo DO; Department of Soils and Fertilizers, School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo State University, São Paulo, Brazil.
  • Rossingnoli NO; Department of Biology, FFCLRP, University of Sao Paulo, Ribeirão Preto, São Paulo, Brazil.
  • de Pinho Costa KA; Federal Institute Goiano, Rio Verde Campus, Goiás, Brazil.
  • de Mello Prado R; Department of Soils and Fertilizers, School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo State University, São Paulo, Brazil.
  • Gonzalez-Meler M; Ecology and Evolution, Department of Biological Sciences, University of Illinois, Chicago, IL, United States.
  • Martinez CA; Department of Biology, FFCLRP, University of Sao Paulo, Ribeirão Preto, São Paulo, Brazil. Electronic address: carlosamh@ffclrp.usp.br.
Sci Total Environ ; 759: 143505, 2021 Mar 10.
Article em En | MEDLINE | ID: mdl-33223164
Tropical pastures play a significant role in the global carbon cycle and are crucial for world livestock production. Despite its importance, there is a paucity of field studies that clarify how tropical pasture species will be affected by environmental changes predicted for tropical regions. Using a temperature-free air-controlled enhancement (T-FACE) system, we increased canopy temperature (+2 °C over ambient) and evaluated the effects of warming under two soil moisture conditions in a factorial design over the physiology, forage production, and forage quality of a tropical forage legume, Stylosanthes capitata. Under well-watered conditions, warming increased the PSII efficiency, net photosynthesis, and aboveground biomass accumulation, but reduced forage quality and digestibility by decreasing crude protein content and increasing lignin content. Non-irrigated conditions under ambient temperature reduced leaf water status presumably promoting the reduction in net photosynthesis, forage production, and forage quality and digestibility. Under the combination of canopy warming and non-irrigated conditions, warming mitigated the effects of reduced soil moisture on leaf photosynthesis and biomass production, but a significant interaction reduced forage quality and digestibility more than under isolated treatments of warming or non-irrigated conditions. We found a potential physiological acclimation of the tropical forage species to moderate warming when grown under rainfed or well-watered conditions. However, this acclimation was achieved due to a trade-off that reduced forage nutritional value and digestibility that may impact future animal feeding, livestock production, and would contribute to methane emissions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Fabaceae Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Sci Total Environ Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Fabaceae Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Sci Total Environ Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda