Your browser doesn't support javascript.
loading
Photosynthetic Traits of Páramo Plants Subjected to Short-Term Warming in OTC Chambers.
Solarte, María Elena; Solarte Erazo, Yisela; Ramírez Cupacán, Elizabeth; Enríquez Paz, Camila; Melgarejo, Luz Marina; Lasso, Eloisa; Flexas, Jaume; Gulias, Javier.
Afiliação
  • Solarte ME; Laboratorio de Ecofisiología Vegetal, Grupo de Investigación Biología de Páramos y Ecosistemas Andinos, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Nariño, Pasto 52001, Colombia.
  • Solarte Erazo Y; Laboratorio de Ecofisiología Vegetal, Grupo de Investigación Biología de Páramos y Ecosistemas Andinos, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Nariño, Pasto 52001, Colombia.
  • Ramírez Cupacán E; Laboratorio de Ecofisiología Vegetal, Grupo de Investigación Biología de Páramos y Ecosistemas Andinos, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Nariño, Pasto 52001, Colombia.
  • Enríquez Paz C; Laboratorio de Ecofisiología Vegetal, Grupo de Investigación Biología de Páramos y Ecosistemas Andinos, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Nariño, Pasto 52001, Colombia.
  • Melgarejo LM; Laboratorio de Fisiología y Bioquímica Vegetal, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Bogota 111321, Colombia.
  • Lasso E; Grupo de Ecología y Fisiología Vegetal EcoFiv, Departamento de Ciencias Biológicas, Universidad de los Andes, Bogota 111711, Colombia.
  • Flexas J; Grupo de Investigación en Biología Vegetal en Condiciones Mediterráneas, Departamento de Biología, Universitat de Les Illes Balears (UIB), 07122 Palma, Spain.
  • Gulias J; Grupo de Investigación en Biología Vegetal en Condiciones Mediterráneas, Departamento de Biología, Universitat de Les Illes Balears (UIB), 07122 Palma, Spain.
Plants (Basel) ; 11(22)2022 Nov 15.
Article em En | MEDLINE | ID: mdl-36432839
Global warming and changes in land use are some of the main threats to high mountain species. Both can interact in ways not yet assessed. In this study, we evaluated the photosynthetic responses of six common páramo species within a warming experiment using open-top chambers (OTC) in conserved páramo areas with different land use histories. We did not find significant differences in the photochemical performance of the species as measured through Fv/Fm, ETR, and NPQ in response to passive warming, indicating that warmed plants are not stressed. However, NPQ values were higher in recovering areas, especially in the driest and warmest months. Leaf transpiration, stomatal conductance, and Ci were not affected by the OTC or the land use history. The photosynthetic capacity, maximum photosynthetic capacity, and carboxylation rate of RuBisCO increased in response to warming but only in the area with no anthropogenic intervention. These results suggest that species will respond differently to warming depending on the history of páramo use, and therefore not all páramo communities will respond equally to climate change. In disturbed sites with altered soil conditions, plants could have a lower breadth of physiological response to warming.
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Plants (Basel) Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Plants (Basel) Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Suíça