Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats
Abstract Lichens, as typical obligate associations between lichenized fungi and their photosynthetic partners, are dominant in Antarctica. Three Antarctic lichens, Ochrolechia frigida, Umbilicaria antarctica, and Usnea aurantiacoatra with different growth forms, were sampled nearby the Great Wall St...
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crdegruyter:10.1515/popore-2015-0012 2024-09-15T17:46:23+00:00 Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats Cao, Shunan Zhang, Jie Zheng, Hongyuan Liu, Chuanpeng Zhou, Qiming 2015 http://dx.doi.org/10.1515/popore-2015-0012 http://content.sciendo.com/view/journals/popore/36/2/article-p175.xml https://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0012/popore-2015-0012.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0/ Polish Polar Research volume 36, issue 2, page 175-188 ISSN 2081-8262 journal-article 2015 crdegruyter https://doi.org/10.1515/popore-2015-0012 2024-07-22T04:11:33Z Abstract Lichens, as typical obligate associations between lichenized fungi and their photosynthetic partners, are dominant in Antarctica. Three Antarctic lichens, Ochrolechia frigida, Umbilicaria antarctica, and Usnea aurantiacoatra with different growth forms, were sampled nearby the Great Wall Station, King George Island. Molecular data revealed that the photosynthetic algae in these three lichens were Trebouxia jamesii. The net photo− synthesis (Pn) of three individuals from these species, together with environmental factors such as light and temperature, were recorded by CO 2 gas exchange measurements using a CI−340 portable photosynthetic system in situ. Differences between T(leaf) (the temperature of the thalli) and T(air) (the air temperature) for these lichens were not consistent, which reflected that environment and the growth form of thalli could affect T(leaf) significantly. Strong irradiation was expected to have adverse effects on Pn of Ochrolechia frigida and Umbilicaria antarctica whose thalli spread flat; but this photoinhibition had little effect on Usnea aurantiacoatra with exuberant tufted thallus. These results indicated that photosynthetic activity in lichens was affected by the growth forms of thalli besides microhabitat factors. One species of lichenized alga could exhibit diversified types of photosynthetic behavior when it was associated with various lichenized fungi in different microhabitats. It will be helpful for understanding how lichens are able to adapt to and colonize in extreme environments. Article in Journal/Newspaper Antarc* Antarctic Antarctica King George Island Polar Research De Gruyter Polish Polar Research 36 2 175 188 |
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Abstract Lichens, as typical obligate associations between lichenized fungi and their photosynthetic partners, are dominant in Antarctica. Three Antarctic lichens, Ochrolechia frigida, Umbilicaria antarctica, and Usnea aurantiacoatra with different growth forms, were sampled nearby the Great Wall Station, King George Island. Molecular data revealed that the photosynthetic algae in these three lichens were Trebouxia jamesii. The net photo− synthesis (Pn) of three individuals from these species, together with environmental factors such as light and temperature, were recorded by CO 2 gas exchange measurements using a CI−340 portable photosynthetic system in situ. Differences between T(leaf) (the temperature of the thalli) and T(air) (the air temperature) for these lichens were not consistent, which reflected that environment and the growth form of thalli could affect T(leaf) significantly. Strong irradiation was expected to have adverse effects on Pn of Ochrolechia frigida and Umbilicaria antarctica whose thalli spread flat; but this photoinhibition had little effect on Usnea aurantiacoatra with exuberant tufted thallus. These results indicated that photosynthetic activity in lichens was affected by the growth forms of thalli besides microhabitat factors. One species of lichenized alga could exhibit diversified types of photosynthetic behavior when it was associated with various lichenized fungi in different microhabitats. It will be helpful for understanding how lichens are able to adapt to and colonize in extreme environments. |
format |
Article in Journal/Newspaper |
author |
Cao, Shunan Zhang, Jie Zheng, Hongyuan Liu, Chuanpeng Zhou, Qiming |
spellingShingle |
Cao, Shunan Zhang, Jie Zheng, Hongyuan Liu, Chuanpeng Zhou, Qiming Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
author_facet |
Cao, Shunan Zhang, Jie Zheng, Hongyuan Liu, Chuanpeng Zhou, Qiming |
author_sort |
Cao, Shunan |
title |
Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
title_short |
Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
title_full |
Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
title_fullStr |
Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
title_full_unstemmed |
Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
title_sort |
photosynthetic performance in antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats |
publisher |
Walter de Gruyter GmbH |
publishDate |
2015 |
url |
http://dx.doi.org/10.1515/popore-2015-0012 http://content.sciendo.com/view/journals/popore/36/2/article-p175.xml https://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0012/popore-2015-0012.pdf |
genre |
Antarc* Antarctic Antarctica King George Island Polar Research |
genre_facet |
Antarc* Antarctic Antarctica King George Island Polar Research |
op_source |
Polish Polar Research volume 36, issue 2, page 175-188 ISSN 2081-8262 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_doi |
https://doi.org/10.1515/popore-2015-0012 |
container_title |
Polish Polar Research |
container_volume |
36 |
container_issue |
2 |
container_start_page |
175 |
op_container_end_page |
188 |
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1810494482716557312 |