Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming
Artículo
![Thumbnail](/themes/Mirage2/images/cubierta.jpg)
Open/ Download
Publication date
2019Metadata
Show full item record
Cómo citar
Sanhueza, Carolina
Cómo citar
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming
Author
Abstract
Leaf respiration and photosynthesis will respond differently to an increase in temperature during night, which can be more relevant in sensitive ecosystems such as Antarctica. We postulate that the plant species able to colonize the Antarctic Peninsula – Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. – are able to acclimate their foliar respiration and to maintain photosynthesis under nocturnal warming to sustain a positive foliar carbon balance. We conducted a laboratory experiment to evaluate the effect of time of day (day and night) and nocturnal warming on dark respiration. Short (E0 and Q10) and long-term acclimation of respiration, leaf carbohydrates, photosynthesis (Asat) and foliar carbon balance (R/A) were evaluated. The results suggest that the two species have differential thermal acclimation respiration, where D. antarctica showed more thermosensitivity to short-term changes in temperature than C. quitensis.
Indexation
Artículo de publicación SCOPUS
Identifier
URI: https://repositorio.uchile.cl/handle/2250/171642
DOI: 10.1111/ppl.12881
ISSN: 13993054
00319317
Quote Item
Physiologia Plantarum, Volumen 167, Issue 2, 2019, Pages 205-216
Collections