Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient
Serving as “natural laboratories”, altitudinal gradients can be used to study changes in the distribution of microorganisms in response to changing environmental conditions that typically occur over short geographical distances. Besides, rhizosphere zones of plants are known to be hot-spots for micr...
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ftdoajarticles:oai:doaj.org/article:25585555aec44f67a5a5c17188389ea0 2023-05-15T18:04:31+02:00 Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient Nadine Praeg Harald Pauli Paul Illmer 2019-07-01T00:00:00Z https://doi.org/10.3389/fmicb.2019.01429 https://doaj.org/article/25585555aec44f67a5a5c17188389ea0 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmicb.2019.01429/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2019.01429 https://doaj.org/article/25585555aec44f67a5a5c17188389ea0 Frontiers in Microbiology, Vol 10 (2019) rhizobiome altitudinal gradient biodiversity bacteria archaea fungi Microbiology QR1-502 article 2019 ftdoajarticles https://doi.org/10.3389/fmicb.2019.01429 2022-12-30T20:49:36Z Serving as “natural laboratories”, altitudinal gradients can be used to study changes in the distribution of microorganisms in response to changing environmental conditions that typically occur over short geographical distances. Besides, rhizosphere zones of plants are known to be hot-spots for microbial diversity and to contain different microbial communities when compared with surrounding bulk soil. To discriminate the effects of altitude and plants, we investigated the microbial communities in the rhizosphere of Ranunculus glacialis and bulk soil along a high-alpine altitudinal gradient (2,600–3,400 m a.s.l.). The research area of this study was Mount (Mt.) “Schrankogel” in the Central Alps of Tyrol (Austria). Our results point to significantly different microbial diversities and community compositions in the different altitudinal belts. In the case of prokaryotes, environmental parameters could explain 41% of the total variation of soil communities, with pH and temperature being the strongest influencing factors. Comparing the effects derived from fraction (bulk vs. rhizosphere soil) and environmental factors, the effects of the roots of R. glacialis accounted for about one third of the explained variation. Fungal communities on the other hand were nearly exclusively influenced by environmental parameters accounting for 37.4% of the total variation. Both, for altitudinal zones as well as for bulk and rhizosphere fractions a couple of very specific biomarker taxa could be identified. Generally, the patterns of abundance of several taxa did not follow a steady increased or decreased trend along the altitudinal gradient but in many cases a maximal or minimal occurrence was established at mid-altitudes (3,000–3,100 m). This mid-altitudinal zone is a transition zone (the so-called alpine-nival ecotone) between the (lower) alpine grassland/tundra zone and the (upper) sparsely vegetated nival zone and was shown to correspond with the summer snow line. Climate change and the associated increase in temperature will ... Article in Journal/Newspaper Ranunculus glacialis Tundra Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 10 |
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Directory of Open Access Journals: DOAJ Articles |
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topic |
rhizobiome altitudinal gradient biodiversity bacteria archaea fungi Microbiology QR1-502 |
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rhizobiome altitudinal gradient biodiversity bacteria archaea fungi Microbiology QR1-502 Nadine Praeg Harald Pauli Paul Illmer Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
topic_facet |
rhizobiome altitudinal gradient biodiversity bacteria archaea fungi Microbiology QR1-502 |
description |
Serving as “natural laboratories”, altitudinal gradients can be used to study changes in the distribution of microorganisms in response to changing environmental conditions that typically occur over short geographical distances. Besides, rhizosphere zones of plants are known to be hot-spots for microbial diversity and to contain different microbial communities when compared with surrounding bulk soil. To discriminate the effects of altitude and plants, we investigated the microbial communities in the rhizosphere of Ranunculus glacialis and bulk soil along a high-alpine altitudinal gradient (2,600–3,400 m a.s.l.). The research area of this study was Mount (Mt.) “Schrankogel” in the Central Alps of Tyrol (Austria). Our results point to significantly different microbial diversities and community compositions in the different altitudinal belts. In the case of prokaryotes, environmental parameters could explain 41% of the total variation of soil communities, with pH and temperature being the strongest influencing factors. Comparing the effects derived from fraction (bulk vs. rhizosphere soil) and environmental factors, the effects of the roots of R. glacialis accounted for about one third of the explained variation. Fungal communities on the other hand were nearly exclusively influenced by environmental parameters accounting for 37.4% of the total variation. Both, for altitudinal zones as well as for bulk and rhizosphere fractions a couple of very specific biomarker taxa could be identified. Generally, the patterns of abundance of several taxa did not follow a steady increased or decreased trend along the altitudinal gradient but in many cases a maximal or minimal occurrence was established at mid-altitudes (3,000–3,100 m). This mid-altitudinal zone is a transition zone (the so-called alpine-nival ecotone) between the (lower) alpine grassland/tundra zone and the (upper) sparsely vegetated nival zone and was shown to correspond with the summer snow line. Climate change and the associated increase in temperature will ... |
format |
Article in Journal/Newspaper |
author |
Nadine Praeg Harald Pauli Paul Illmer |
author_facet |
Nadine Praeg Harald Pauli Paul Illmer |
author_sort |
Nadine Praeg |
title |
Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
title_short |
Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
title_full |
Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
title_fullStr |
Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
title_full_unstemmed |
Microbial Diversity in Bulk and Rhizosphere Soil of Ranunculus glacialis Along a High-Alpine Altitudinal Gradient |
title_sort |
microbial diversity in bulk and rhizosphere soil of ranunculus glacialis along a high-alpine altitudinal gradient |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmicb.2019.01429 https://doaj.org/article/25585555aec44f67a5a5c17188389ea0 |
genre |
Ranunculus glacialis Tundra |
genre_facet |
Ranunculus glacialis Tundra |
op_source |
Frontiers in Microbiology, Vol 10 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmicb.2019.01429/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2019.01429 https://doaj.org/article/25585555aec44f67a5a5c17188389ea0 |
op_doi |
https://doi.org/10.3389/fmicb.2019.01429 |
container_title |
Frontiers in Microbiology |
container_volume |
10 |
_version_ |
1766175913351839744 |