Photosynthetic performance in Antarctic lichens with different growth forms reflect the diversity of lichenized algal adaptation to microhabitats
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, Ki...
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ftdoajarticles:oai:doaj.org/article:e1cd3c79c1fa4657aa8de2a02eb23c70 2023-05-15T13:53:16+02:00 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 2015-06-01T00:00:00Z https://doi.org/10.1515/popore-2015-0012 https://doaj.org/article/e1cd3c79c1fa4657aa8de2a02eb23c70 EN eng Polish Academy of Sciences http://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0012/popore-2015-0012.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2015-0012 https://doaj.org/article/e1cd3c79c1fa4657aa8de2a02eb23c70 Polish Polar Research, Vol 36, Iss 2, Pp 175-188 (2015) Antarctic lichens lichenized molecular phylogenetics photosynthesis Trebouxia Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.1515/popore-2015-0012 2022-12-31T08:23:45Z 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 CO2 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 Directory of Open Access Journals: DOAJ Articles Antarctic King George Island Great Wall Station ENVELOPE(-58.970,-58.970,-62.217,-62.217) Polish Polar Research 36 2 175 188 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic lichens lichenized molecular phylogenetics photosynthesis Trebouxia Geology QE1-996.5 |
spellingShingle |
Antarctic lichens lichenized molecular phylogenetics photosynthesis Trebouxia Geology QE1-996.5 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 |
topic_facet |
Antarctic lichens lichenized molecular phylogenetics photosynthesis Trebouxia Geology QE1-996.5 |
description |
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 CO2 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 |
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 |
Polish Academy of Sciences |
publishDate |
2015 |
url |
https://doi.org/10.1515/popore-2015-0012 https://doaj.org/article/e1cd3c79c1fa4657aa8de2a02eb23c70 |
long_lat |
ENVELOPE(-58.970,-58.970,-62.217,-62.217) |
geographic |
Antarctic King George Island Great Wall Station |
geographic_facet |
Antarctic King George Island Great Wall Station |
genre |
Antarc* Antarctic Antarctica King George Island Polar Research |
genre_facet |
Antarc* Antarctic Antarctica King George Island Polar Research |
op_source |
Polish Polar Research, Vol 36, Iss 2, Pp 175-188 (2015) |
op_relation |
http://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0012/popore-2015-0012.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2015-0012 https://doaj.org/article/e1cd3c79c1fa4657aa8de2a02eb23c70 |
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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1766258293039169536 |