Chlorophyll content and temperature-dependent net photosynthesis and respiration rate in the lichen Cetraria aculeata

We studied polar and temperate samples of the lichen Cetraria aculeata to investigate whether genetical differences between photobionts are correlated with physiological properties of the lichen holobiont. Net photosynthesis and dark respiration (DR) at different temperatures (from 0 to 30 °C) and photon flux densities (from 0 to 1,200 mmol/m**2/s) were studied for four populations of Cetraria aculeata. Samples were collected from maritime Antarctica, Svalbard, Germany and Spain, representing different climatic situations. Sequencing of the photobiont showed that the investigated samples fall in the polar and temperate clade described in Fernández-Mendoza et al. (2011, doi:10.1111/j.1365-294X.2010.04993.x). Lichens with photobionts from these clades differ in their temperature optimum for photosynthesis, maximal net photosynthesis, maximal DR and chlorophyll content. Maximal net photosynthesis was much lower in Antarctica and Svalbard than in Germany and Spain. The difference was smaller when rates were expressed by chlorophyll content. The same is true for the temperature optima of polar (11 °C) and temperate (15 and 17 °C) lichens. Our results indicate that lichen mycobionts may adapt or acclimate to local environmental conditions either by selecting algae from regional pools or by regulating algal cell numbers (chlorophyll content) within the thallus.

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Domaschke, Stephanie, Vivas, M, Sancho, L G, Printzen, Christian (2013). Dataset: Chlorophyll content and temperature-dependent net photosynthesis and respiration rate in the lichen Cetraria aculeata. https://doi.org/10.1594/PANGAEA.847627

DOI retrieved: 2013

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.847627
Author Domaschke, Stephanie
Given Name Stephanie
Family Name Domaschke
More Authors
Vivas, M
Sancho, L G
Printzen, Christian
Source Creation 2013
Publication Year 2013
Resource Type application/zip - filename: Domaschke_2013
Subject Areas
Name: Ecology

Related Identifiers
Title: Ecophysiology and genetic structure of polar versus temperate populations of the lichen Cetraria aculeata
Identifier: https://doi.org/10.1007/s00442-013-2670-3
Type: DOI
Relation: IsSupplementTo
Year: 2013
Source: Oecologia
Authors: Domaschke Stephanie , Vivas M , Sancho L G , Printzen Christian .

Title: Gene sequences of the lichen Cetraria aculeata
Identifier: https://doi.org/10.1594/PANGAEA.767433
Type: DOI
Relation: References
Year: 2011
Authors: Fernández-Mendoza Fernando , Domaschke Stephanie , García Miguel Ángel , Jordan Patrick , Martín María , Printzen Christian .