Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle
Streptophyte green algae comprise the origin of land plants and therefore life on earth as we know it today. While terrestrialization opened new habitats, leaving the aquatic environment brought additional abiotic stresses. More-drastic temperature shifts and high light levels are major abiotic stre...
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ftdoajarticles:oai:doaj.org/article:f682623b0cb2407791c953ed8989889f 2023-05-15T13:52:38+02:00 Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle Charlotte Permann Burkhard Becker Andreas Holzinger 2022-07-01T00:00:00Z https://doi.org/10.3389/fpls.2022.945394 https://doaj.org/article/f682623b0cb2407791c953ed8989889f EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fpls.2022.945394/full https://doaj.org/toc/1664-462X 1664-462X doi:10.3389/fpls.2022.945394 https://doaj.org/article/f682623b0cb2407791c953ed8989889f Frontiers in Plant Science, Vol 13 (2022) abiotic stress Antarctic arctic climate change cold stress heat stress Plant culture SB1-1110 article 2022 ftdoajarticles https://doi.org/10.3389/fpls.2022.945394 2022-12-30T21:15:13Z Streptophyte green algae comprise the origin of land plants and therefore life on earth as we know it today. While terrestrialization opened new habitats, leaving the aquatic environment brought additional abiotic stresses. More-drastic temperature shifts and high light levels are major abiotic stresses in semi-terrestrial habitats, in addition to desiccation, which has been reviewed elsewhere. Zygnematophyceae, a species-rich class of streptophyte green algae, is considered a sister-group to embryophytes. They have developed a variety of avoidance and adaptation mechanisms to protect against temperature extremes and high radiation in the form of photosynthetically active and ultraviolet radiation (UV) radiation occurring on land. Recently, knowledge of transcriptomic and metabolomic changes as consequences of these stresses has become available. Land-plant stress-signaling pathways producing homologs of key enzymes have been described in Zygnematophyceae. An efficient adaptation strategy is their mat-like growth habit, which provides self-shading and protects lower layers from harmful radiation. Additionally, Zygnematophyceae possess phenolic compounds with UV-screening ability. Resting stages such as vegetative pre-akinetes tolerate freezing to a much higher extent than do young cells. Sexual reproduction occurs by conjugation without the formation of flagellated male gametes, which can be seen as an advantage in water-deficient habitats. The resulting zygospores possess a multilayer cell wall, contributing to their resistance to terrestrial conditions. Especially in the context of global change, understanding temperature and light tolerance is crucial. Article in Journal/Newspaper Antarc* Antarctic Arctic Climate change Directory of Open Access Journals: DOAJ Articles Arctic Antarctic Frontiers in Plant Science 13 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
abiotic stress Antarctic arctic climate change cold stress heat stress Plant culture SB1-1110 |
spellingShingle |
abiotic stress Antarctic arctic climate change cold stress heat stress Plant culture SB1-1110 Charlotte Permann Burkhard Becker Andreas Holzinger Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
topic_facet |
abiotic stress Antarctic arctic climate change cold stress heat stress Plant culture SB1-1110 |
description |
Streptophyte green algae comprise the origin of land plants and therefore life on earth as we know it today. While terrestrialization opened new habitats, leaving the aquatic environment brought additional abiotic stresses. More-drastic temperature shifts and high light levels are major abiotic stresses in semi-terrestrial habitats, in addition to desiccation, which has been reviewed elsewhere. Zygnematophyceae, a species-rich class of streptophyte green algae, is considered a sister-group to embryophytes. They have developed a variety of avoidance and adaptation mechanisms to protect against temperature extremes and high radiation in the form of photosynthetically active and ultraviolet radiation (UV) radiation occurring on land. Recently, knowledge of transcriptomic and metabolomic changes as consequences of these stresses has become available. Land-plant stress-signaling pathways producing homologs of key enzymes have been described in Zygnematophyceae. An efficient adaptation strategy is their mat-like growth habit, which provides self-shading and protects lower layers from harmful radiation. Additionally, Zygnematophyceae possess phenolic compounds with UV-screening ability. Resting stages such as vegetative pre-akinetes tolerate freezing to a much higher extent than do young cells. Sexual reproduction occurs by conjugation without the formation of flagellated male gametes, which can be seen as an advantage in water-deficient habitats. The resulting zygospores possess a multilayer cell wall, contributing to their resistance to terrestrial conditions. Especially in the context of global change, understanding temperature and light tolerance is crucial. |
format |
Article in Journal/Newspaper |
author |
Charlotte Permann Burkhard Becker Andreas Holzinger |
author_facet |
Charlotte Permann Burkhard Becker Andreas Holzinger |
author_sort |
Charlotte Permann |
title |
Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
title_short |
Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
title_full |
Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
title_fullStr |
Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
title_full_unstemmed |
Temperature- and light stress adaptations in Zygnematophyceae: The challenges of a semi-terrestrial lifestyle |
title_sort |
temperature- and light stress adaptations in zygnematophyceae: the challenges of a semi-terrestrial lifestyle |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fpls.2022.945394 https://doaj.org/article/f682623b0cb2407791c953ed8989889f |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Climate change |
genre_facet |
Antarc* Antarctic Arctic Climate change |
op_source |
Frontiers in Plant Science, Vol 13 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fpls.2022.945394/full https://doaj.org/toc/1664-462X 1664-462X doi:10.3389/fpls.2022.945394 https://doaj.org/article/f682623b0cb2407791c953ed8989889f |
op_doi |
https://doi.org/10.3389/fpls.2022.945394 |
container_title |
Frontiers in Plant Science |
container_volume |
13 |
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1766257074798329856 |