Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants
Climate change directly affecting the Antarctic Peninsula has been reported to induce the successful colonization of ice-free lands by two Antarctic vascular plants (Deschampsia antarctica and Colobanthus quitensis). While studies have revealed the importance of microbiota for plant growth and stres...
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ftdoajarticles:oai:doaj.org/article:bac1eae0800e468ebe8c90ca6b2558ac 2023-05-15T13:39:32+02:00 Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants Qian Zhang Jacquelinne J. Acuña Nitza G. Inostroza Paola Duran María L. Mora Michael J. Sadowsky Milko A. Jorquera 2020-06-01T00:00:00Z https://doi.org/10.3389/fmicb.2020.01036 https://doaj.org/article/bac1eae0800e468ebe8c90ca6b2558ac EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmicb.2020.01036/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2020.01036 https://doaj.org/article/bac1eae0800e468ebe8c90ca6b2558ac Frontiers in Microbiology, Vol 11 (2020) bacterial community Colobanthus quitensis Deschampsia antarctica endosphere phyllosphere rhizosphere Microbiology QR1-502 article 2020 ftdoajarticles https://doi.org/10.3389/fmicb.2020.01036 2022-12-30T23:28:06Z Climate change directly affecting the Antarctic Peninsula has been reported to induce the successful colonization of ice-free lands by two Antarctic vascular plants (Deschampsia antarctica and Colobanthus quitensis). While studies have revealed the importance of microbiota for plant growth and stress tolerance in temperate climates, the role that plant-associated microbes play in the colonization of ice-free lands remains unknown. Consequently, we used high-throughput DNA sequence analyses to explore the composition, predicted functions, and interactive networks of plant-associated microbial communities among the rhizosphere, endosphere, and phyllosphere niches of D. antarctica and C. quitensis. Here we report a greater number of operational taxonomic units (OTUs), diversity, and richness in the microbial communities from the rhizosphere, relative to endosphere and phyllosphere. While taxonomic assignments showed greater relative abundances of Proteobacteria, Bacteroidetes, and Actinobacteria in plant niches, principal coordinate analysis revealed differences among the bacterial communities from the other compartments examined. More importantly, however, our results showed that most of OTUs were exclusively found in each plant niche. Major predicted functional groups of these microbiota were attributed to heterotrophy, aerobic heterotrophy, fermentation, and nitrate reduction, independent of plant niches or plant species. Co-occurrences network analyses identified 5 (e.g., Microbacteriaceae, Pseudomonaceae, Lactobacillaceae, and Corynebacteriaceae), 23 (e.g., Chitinophagaceae and Sphingomonadaceae) and 7 (e.g., Rhodospirillaceae) putative keystone taxa present in endosphere, phyllosphere, and rhizosphere, respectively. Our results revealed niche differentiation in Antarctic vascular plants, highlighting some putative microbial indicators and keystone taxa in each niche. However, more studies are required to determine the pivotal role that these microbes play in the successful colonization of ice-free lands by ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula The Antarctic Frontiers in Microbiology 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
bacterial community Colobanthus quitensis Deschampsia antarctica endosphere phyllosphere rhizosphere Microbiology QR1-502 |
spellingShingle |
bacterial community Colobanthus quitensis Deschampsia antarctica endosphere phyllosphere rhizosphere Microbiology QR1-502 Qian Zhang Jacquelinne J. Acuña Nitza G. Inostroza Paola Duran María L. Mora Michael J. Sadowsky Milko A. Jorquera Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
topic_facet |
bacterial community Colobanthus quitensis Deschampsia antarctica endosphere phyllosphere rhizosphere Microbiology QR1-502 |
description |
Climate change directly affecting the Antarctic Peninsula has been reported to induce the successful colonization of ice-free lands by two Antarctic vascular plants (Deschampsia antarctica and Colobanthus quitensis). While studies have revealed the importance of microbiota for plant growth and stress tolerance in temperate climates, the role that plant-associated microbes play in the colonization of ice-free lands remains unknown. Consequently, we used high-throughput DNA sequence analyses to explore the composition, predicted functions, and interactive networks of plant-associated microbial communities among the rhizosphere, endosphere, and phyllosphere niches of D. antarctica and C. quitensis. Here we report a greater number of operational taxonomic units (OTUs), diversity, and richness in the microbial communities from the rhizosphere, relative to endosphere and phyllosphere. While taxonomic assignments showed greater relative abundances of Proteobacteria, Bacteroidetes, and Actinobacteria in plant niches, principal coordinate analysis revealed differences among the bacterial communities from the other compartments examined. More importantly, however, our results showed that most of OTUs were exclusively found in each plant niche. Major predicted functional groups of these microbiota were attributed to heterotrophy, aerobic heterotrophy, fermentation, and nitrate reduction, independent of plant niches or plant species. Co-occurrences network analyses identified 5 (e.g., Microbacteriaceae, Pseudomonaceae, Lactobacillaceae, and Corynebacteriaceae), 23 (e.g., Chitinophagaceae and Sphingomonadaceae) and 7 (e.g., Rhodospirillaceae) putative keystone taxa present in endosphere, phyllosphere, and rhizosphere, respectively. Our results revealed niche differentiation in Antarctic vascular plants, highlighting some putative microbial indicators and keystone taxa in each niche. However, more studies are required to determine the pivotal role that these microbes play in the successful colonization of ice-free lands by ... |
format |
Article in Journal/Newspaper |
author |
Qian Zhang Jacquelinne J. Acuña Nitza G. Inostroza Paola Duran María L. Mora Michael J. Sadowsky Milko A. Jorquera |
author_facet |
Qian Zhang Jacquelinne J. Acuña Nitza G. Inostroza Paola Duran María L. Mora Michael J. Sadowsky Milko A. Jorquera |
author_sort |
Qian Zhang |
title |
Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
title_short |
Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
title_full |
Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
title_fullStr |
Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
title_full_unstemmed |
Niche Differentiation in the Composition, Predicted Function, and Co-occurrence Networks in Bacterial Communities Associated With Antarctic Vascular Plants |
title_sort |
niche differentiation in the composition, predicted function, and co-occurrence networks in bacterial communities associated with antarctic vascular plants |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmicb.2020.01036 https://doaj.org/article/bac1eae0800e468ebe8c90ca6b2558ac |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Frontiers in Microbiology, Vol 11 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmicb.2020.01036/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2020.01036 https://doaj.org/article/bac1eae0800e468ebe8c90ca6b2558ac |
op_doi |
https://doi.org/10.3389/fmicb.2020.01036 |
container_title |
Frontiers in Microbiology |
container_volume |
11 |
_version_ |
1766120004701388800 |