In situ warming in the Antarctic: effects on growth and photosynthesis in Antarctic vascular plants

Primer Autor
Saez, Patricia L.
Co-autores
Cavieres, Lohengrin A.#Galmes, Jeroni#Gil-Pelegrin, Eustaquio#Javier Peguero-Pina, Jose#Sancho-Knapik, Domingo#Vivas, Mercedes#Sanhueza, Carolina#Ramirez, Constanza F.#Rivera, Betsy K.#Corcuera, Luis J.#Bravo, Leon A.
Título
In situ warming in the Antarctic: effects on growth and photosynthesis in Antarctic vascular plants
Editorial
WILEY
Revista
NEW PHYTOLOGIST
Lenguaje
en
Resumen
The Antarctic Peninsula has experienced a rapid warming in the last decades. Although recent climatic evidence supports a new tendency towards stabilization of temperatures, the impacts on the biosphere, and specifically on Antarctic plant species, remain unclear. We evaluated the in situ warming effects on photosynthesis, including the underlying diffusive, biochemical and anatomical determinants, and the relative growth of two Antarctic vascular species, Colobanthus quitensis and Deschampsia antarctica, using open top chambers (OTCs) and gas exchange measurements in the field. In C. quitensis, the photosynthetic response to warming relied on specific adjustments in the anatomical determinants of the leaf CO2 transfer, which enhanced mesophyll conductance and photosynthetic assimilation, thereby promoting higher leaf carbon gain and plant growth. These changes were accompanied by alterations in the leaf chemical composition. By contrast, D. antarctica showed no response to warming, with a lack of significant differences between plants grown inside OTCs and plants grown in the open field. Overall, the present results are the first reporting a contrasting effect of in situ warming on photosynthesis and its underlying determinants, of the two unique Antarctic vascular plant species, which could have direct consequences on their ecological success under future climate conditions.
Tipo de Recurso
Artículo original
Description
The authors thank CONICYT-FONDECYT 11130332, CONICYT-PIA ART11-02, CONICYT, Atraccion de Capital Humano Avanzado del Extranjero (MEC-80130020), CONICYT PFB-023 and the Chilean Antarctic Institute (INACH AN-02-12 and FI_02-13). Special thanks to the Arctowski Station crew and the Polish Academy of Sciences for their support and help during our field work. The authors thank Dr Charles L. Guy (University of Florida) for English editing and help with grammar. Permits for entrance and plant collection in the ASPA 128 were provided by INACH.
Los autores agradecen a CONICYT-FONDECYT 11130332, CONICYT-PIA ART11-02, CONICYT, Atracción de Capital Humano Avanzado del Extranjero (MEC-80130020), CONICYT PFB-023 y al Instituto Antártico Chileno (INACH AN-02-12 y FI_02-13). Agradecemos especialmente al equipo de la Estación Arctowski y a la Academia Polaca de Ciencias por su apoyo y ayuda durante nuestro trabajo de campo. Los autores agradecen al Dr. Charles L. Guy (Universidad de Florida) por la edición en inglés y la ayuda con la gramática. Los permisos de entrada y recolección de plantas en la ZAEP 128 fueron proporcionados por el INACH.
doi
10.1111/nph.15124
Formato Recurso
pdf
Palabras Claves
Antarctica# climate change# Colobanthus quitensis# Deschampsia antarctica# leaf traits# mesophyll conductance# photosynthesis
Ubicación del archivo
http://dx.doi.org/10.1111/nph.15124
Categoría OCDE
Plant Sciences
Materias
Antártida# cambio climático# Colobanthus quitensis# Deschampsia antártida# rasgos de las hojas# conductancia del mesófilo# fotosíntesis
Disciplinas de la OCDE
Ecología
Botánica
Ciencias del Medio Ambiente
Id de Web of Science
WOS:000437029600019
Título de la cita (Recomendado-único)
<i>In situ</i> warming in the Antarctic: effects on growth and photosynthesis in Antarctic vascular plants
Identificador del recurso (Mandatado-único)
Artículo original
Versión del recurso (Recomendado-único)
version publicada
Editorial
WILEY
Revista/Libro
NEW PHYTOLOGIST
Categoría WOS
Ciencias de las plantas
ISSN
0028-646X
Idioma
en
Referencia del Financiador (Mandatado si es aplicable-repetible)
ANID CONICYTFONDECYT 11130332#ANID CONICYT-PIA ART11-02#ANID CONICYT Atraccion de Capital Humano Avanzado del Extranjero MEC 80130020#ANID CONICYT PFB-023#INACH AN-02-12#INACH FI_02-1
ANID CONICYT FONDECYT 11130332
ANID CONICYT-PIA ART11-02
ANID CONICYT MEC 80130020
ANID CONICYT PFB-023
INACH AN-02-12
INACH FI_02-13
Arctowski Station
Polish Academy of Sciences
Descripción
The authors thank CONICYT-FONDECYT 11130332, CONICYT-PIA ART11-02, CONICYT, Atraccion de Capital Humano Avanzado del Extranjero (MEC-80130020), CONICYT PFB-023 and the Chilean Antarctic Institute (INACH AN-02-12 and FI_02-13). Special thanks to the Arctowski Station crew and the Polish Academy of Sciences for their support and help during our field work. The authors thank Dr Charles L. Guy (University of Florida) for English editing and help with grammar. Permits for entrance and plant collection in the ASPA 128 were provided by INACH.
Formato
pdf
Tipo de ruta
hibrida
Access Rights
acceso abierto
Derechos de acceso
acceso abierto
Página de inicio (Recomendado-único)
424
Página final (Recomendado-único)
440
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