The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats
The Antarctic continent has extreme natural environment and fragile ecosystem. Mosses are one of the dominant floras in the Antarctic continent. However, their genomic features and adaptation processes to extreme environments remain poorly understood. Here, we assembled the high-quality genome seque...
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ftdoajarticles:oai:doaj.org/article:5aa9dc51524e4f7f80a554ebe2f34ac7 2023-05-15T13:32:28+02:00 The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats Shenghao Liu Shuo Fang Bailin Cong Tingting Li Dan Yi Zhaohui Zhang Linlin Zhao Pengying Zhang 2022-06-01T00:00:00Z https://doi.org/10.3389/fpls.2022.920138 https://doaj.org/article/5aa9dc51524e4f7f80a554ebe2f34ac7 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fpls.2022.920138/full https://doaj.org/toc/1664-462X 1664-462X doi:10.3389/fpls.2022.920138 https://doaj.org/article/5aa9dc51524e4f7f80a554ebe2f34ac7 Frontiers in Plant Science, Vol 13 (2022) whole-genome sequencing gene-family expansions Antarctic bryophyte metabolomic profiling flavonoid biosynthesis UV-B radiation Plant culture SB1-1110 article 2022 ftdoajarticles https://doi.org/10.3389/fpls.2022.920138 2022-12-31T03:12:30Z The Antarctic continent has extreme natural environment and fragile ecosystem. Mosses are one of the dominant floras in the Antarctic continent. However, their genomic features and adaptation processes to extreme environments remain poorly understood. Here, we assembled the high-quality genome sequence of the Antarctic moss (Pohlia nutans) with 698.20 Mb and 22 chromosomes. We found that the high proportion of repeat sequences and a recent whole-genome duplication (WGD) contribute to the large size genome of P. nutans when compared to other bryophytes. The genome of P. nutans harbors the signatures of massive segmental gene duplications and large expansions of gene families, likely facilitating neofunctionalization. Genomic characteristics that may support the Antarctic lifestyle of this moss comprise expanded gene families involved in phenylpropanoid biosynthesis, unsaturated fatty acid biosynthesis, and plant hormone signal transduction. Additional contributions include the significant expansion and upregulation of several genes encoding DNA photolyase, antioxidant enzymes, flavonoid biosynthesis enzymes, possibly reflecting diverse adaptive strategies. Notably, integrated multi-omic analyses elucidate flavonoid biosynthesis may function as the reactive oxygen species detoxification under UV-B radiation. Our studies provide insight into the unique features of the Antarctic moss genome and their molecular responses to extreme terrestrial environments. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Frontiers in Plant Science 13 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
whole-genome sequencing gene-family expansions Antarctic bryophyte metabolomic profiling flavonoid biosynthesis UV-B radiation Plant culture SB1-1110 |
spellingShingle |
whole-genome sequencing gene-family expansions Antarctic bryophyte metabolomic profiling flavonoid biosynthesis UV-B radiation Plant culture SB1-1110 Shenghao Liu Shuo Fang Bailin Cong Tingting Li Dan Yi Zhaohui Zhang Linlin Zhao Pengying Zhang The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
topic_facet |
whole-genome sequencing gene-family expansions Antarctic bryophyte metabolomic profiling flavonoid biosynthesis UV-B radiation Plant culture SB1-1110 |
description |
The Antarctic continent has extreme natural environment and fragile ecosystem. Mosses are one of the dominant floras in the Antarctic continent. However, their genomic features and adaptation processes to extreme environments remain poorly understood. Here, we assembled the high-quality genome sequence of the Antarctic moss (Pohlia nutans) with 698.20 Mb and 22 chromosomes. We found that the high proportion of repeat sequences and a recent whole-genome duplication (WGD) contribute to the large size genome of P. nutans when compared to other bryophytes. The genome of P. nutans harbors the signatures of massive segmental gene duplications and large expansions of gene families, likely facilitating neofunctionalization. Genomic characteristics that may support the Antarctic lifestyle of this moss comprise expanded gene families involved in phenylpropanoid biosynthesis, unsaturated fatty acid biosynthesis, and plant hormone signal transduction. Additional contributions include the significant expansion and upregulation of several genes encoding DNA photolyase, antioxidant enzymes, flavonoid biosynthesis enzymes, possibly reflecting diverse adaptive strategies. Notably, integrated multi-omic analyses elucidate flavonoid biosynthesis may function as the reactive oxygen species detoxification under UV-B radiation. Our studies provide insight into the unique features of the Antarctic moss genome and their molecular responses to extreme terrestrial environments. |
format |
Article in Journal/Newspaper |
author |
Shenghao Liu Shuo Fang Bailin Cong Tingting Li Dan Yi Zhaohui Zhang Linlin Zhao Pengying Zhang |
author_facet |
Shenghao Liu Shuo Fang Bailin Cong Tingting Li Dan Yi Zhaohui Zhang Linlin Zhao Pengying Zhang |
author_sort |
Shenghao Liu |
title |
The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
title_short |
The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
title_full |
The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
title_fullStr |
The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
title_full_unstemmed |
The Antarctic Moss Pohlia nutans Genome Provides Insights Into the Evolution of Bryophytes and the Adaptation to Extreme Terrestrial Habitats |
title_sort |
antarctic moss pohlia nutans genome provides insights into the evolution of bryophytes and the adaptation to extreme terrestrial habitats |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fpls.2022.920138 https://doaj.org/article/5aa9dc51524e4f7f80a554ebe2f34ac7 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Frontiers in Plant Science, Vol 13 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fpls.2022.920138/full https://doaj.org/toc/1664-462X 1664-462X doi:10.3389/fpls.2022.920138 https://doaj.org/article/5aa9dc51524e4f7f80a554ebe2f34ac7 |
op_doi |
https://doi.org/10.3389/fpls.2022.920138 |
container_title |
Frontiers in Plant Science |
container_volume |
13 |
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1766027253131509760 |