Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria
The diversity of lichen-associated bacteria from lichen taxa Cetraria, Cladonia, Megaspora, Pseudephebe, Psoroma, and Sphaerophorus was investigated by sequencing of 16S rRNA gene amplicons. Physiological characteristics of the cultured bacterial isolates were investigated to understand possible rol...
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ftmdpi:oai:mdpi.com:/2076-2607/9/3/607/ 2023-08-20T04:01:41+02:00 Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria Hyun-Ju Noh Yerin Park Soon Gyu Hong Yung Mi Lee agris 2021-03-15 application/pdf https://doi.org/10.3390/microorganisms9030607 EN eng Multidisciplinary Digital Publishing Institute Environmental Microbiology https://dx.doi.org/10.3390/microorganisms9030607 https://creativecommons.org/licenses/by/4.0/ Microorganisms; Volume 9; Issue 3; Pages: 607 Antarctic lichens lichen-associated bacteria macromolecule hydrolysis indole-3-acetic acid phosphate solubilization nitrogen fixation Text 2021 ftmdpi https://doi.org/10.3390/microorganisms9030607 2023-08-01T01:17:23Z The diversity of lichen-associated bacteria from lichen taxa Cetraria, Cladonia, Megaspora, Pseudephebe, Psoroma, and Sphaerophorus was investigated by sequencing of 16S rRNA gene amplicons. Physiological characteristics of the cultured bacterial isolates were investigated to understand possible roles in the lichen ecosystem. Proteobacteria (with a relative abundance of 69.7–96.7%) were mostly represented by the order Rhodospirillales. The 117 retrieved isolates were grouped into 35 phylotypes of the phyla Actinobacteria (27), Bacteroidetes (6), Deinococcus-Thermus (1), and Proteobacteria (Alphaproteobacteria (53), Betaproteobacteria (18), and Gammaproteobacteria (12)). Hydrolysis of macromolecules such as skim milk, polymer, and (hypo)xanthine, solubilization of inorganic phosphate, production of phytohormone indole-3-acetic acid, and fixation of atmospheric nitrogen were observed in different taxa. The potential phototrophy of the strains of the genus Polymorphobacter which were cultivated from a lichen for the first time was revealed by the presence of genes involved in photosynthesis. Altogether, the physiological characteristics of diverse bacterial taxa from Antarctic lichens are considered to imply significant roles of lichen-associated bacteria to allow lichens to be tolerant or competitive in the harsh Antarctic environment. Text Antarc* Antarctic MDPI Open Access Publishing Antarctic Microorganisms 9 3 607 |
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Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
Antarctic lichens lichen-associated bacteria macromolecule hydrolysis indole-3-acetic acid phosphate solubilization nitrogen fixation |
spellingShingle |
Antarctic lichens lichen-associated bacteria macromolecule hydrolysis indole-3-acetic acid phosphate solubilization nitrogen fixation Hyun-Ju Noh Yerin Park Soon Gyu Hong Yung Mi Lee Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
topic_facet |
Antarctic lichens lichen-associated bacteria macromolecule hydrolysis indole-3-acetic acid phosphate solubilization nitrogen fixation |
description |
The diversity of lichen-associated bacteria from lichen taxa Cetraria, Cladonia, Megaspora, Pseudephebe, Psoroma, and Sphaerophorus was investigated by sequencing of 16S rRNA gene amplicons. Physiological characteristics of the cultured bacterial isolates were investigated to understand possible roles in the lichen ecosystem. Proteobacteria (with a relative abundance of 69.7–96.7%) were mostly represented by the order Rhodospirillales. The 117 retrieved isolates were grouped into 35 phylotypes of the phyla Actinobacteria (27), Bacteroidetes (6), Deinococcus-Thermus (1), and Proteobacteria (Alphaproteobacteria (53), Betaproteobacteria (18), and Gammaproteobacteria (12)). Hydrolysis of macromolecules such as skim milk, polymer, and (hypo)xanthine, solubilization of inorganic phosphate, production of phytohormone indole-3-acetic acid, and fixation of atmospheric nitrogen were observed in different taxa. The potential phototrophy of the strains of the genus Polymorphobacter which were cultivated from a lichen for the first time was revealed by the presence of genes involved in photosynthesis. Altogether, the physiological characteristics of diverse bacterial taxa from Antarctic lichens are considered to imply significant roles of lichen-associated bacteria to allow lichens to be tolerant or competitive in the harsh Antarctic environment. |
format |
Text |
author |
Hyun-Ju Noh Yerin Park Soon Gyu Hong Yung Mi Lee |
author_facet |
Hyun-Ju Noh Yerin Park Soon Gyu Hong Yung Mi Lee |
author_sort |
Hyun-Ju Noh |
title |
Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
title_short |
Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
title_full |
Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
title_fullStr |
Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
title_full_unstemmed |
Diversity and Physiological Characteristics of Antarctic Lichens-Associated Bacteria |
title_sort |
diversity and physiological characteristics of antarctic lichens-associated bacteria |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/microorganisms9030607 |
op_coverage |
agris |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Microorganisms; Volume 9; Issue 3; Pages: 607 |
op_relation |
Environmental Microbiology https://dx.doi.org/10.3390/microorganisms9030607 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/microorganisms9030607 |
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Microorganisms |
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9 |
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3 |
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607 |
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1774724929146585088 |