Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica

Sean T S Wei, Donnabella C Lacap-Bugler, Maggie C Y Lau, Tancredi Caruso, Subramanya Rao, Asunción de Los Rios, Stephen K Archer, Jill M Y Chiu, Colleen Higgins, Joy D Van Nostrand, Jizhong Zhou, David W Hopkins, Stephen B Pointing

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Abstract

The McMurdo Dry Valleys of Antarctica are an extreme polar desert. Mineral soils support subsurface microbial communities and translucent rocks support development of hypolithic communities on ventral surfaces in soil contact. Despite significant research attention, relatively little is known about taxonomic and functional diversity or their inter-relationships. Here we report a combined diversity and functional interrogation for soil and hypoliths of the Miers Valley in the McMurdo Dry Valleys of Antarctica. The study employed 16S rRNA fingerprinting and high throughput sequencing combined with the GeoChip functional microarray. The soil community was revealed as a highly diverse reservoir of bacterial diversity dominated by actinobacteria. Hypolithic communities were less diverse and dominated by cyanobacteria. Major differences in putative functionality were that soil communities displayed greater diversity in stress tolerance and recalcitrant substrate utilization pathways, whilst hypolithic communities supported greater diversity of nutrient limitation adaptation pathways. A relatively high level of functional redundancy in both soil and hypoliths may indicate adaptation of these communities to fluctuating environmental conditions.

Original languageEnglish
Article number1642
JournalFrontiers in Microbiology
Volume7
Early online date20 Oct 2016
DOIs
Publication statusFirst published - 20 Oct 2016

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Soil
Actinobacteria
Cyanobacteria
Minerals
Food
Research

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Wei, S. T. S., Lacap-Bugler, D. C., Lau, M. C. Y., Caruso, T., Rao, S., de Los Rios, A., ... Pointing, S. B. (2016). Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica. Frontiers in Microbiology, 7, [1642]. https://doi.org/10.3389/fmicb.2016.01642
Wei, Sean T S ; Lacap-Bugler, Donnabella C ; Lau, Maggie C Y ; Caruso, Tancredi ; Rao, Subramanya ; de Los Rios, Asunción ; Archer, Stephen K ; Chiu, Jill M Y ; Higgins, Colleen ; Van Nostrand, Joy D ; Zhou, Jizhong ; Hopkins, David W ; Pointing, Stephen B. / Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica. In: Frontiers in Microbiology. 2016 ; Vol. 7.
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abstract = "The McMurdo Dry Valleys of Antarctica are an extreme polar desert. Mineral soils support subsurface microbial communities and translucent rocks support development of hypolithic communities on ventral surfaces in soil contact. Despite significant research attention, relatively little is known about taxonomic and functional diversity or their inter-relationships. Here we report a combined diversity and functional interrogation for soil and hypoliths of the Miers Valley in the McMurdo Dry Valleys of Antarctica. The study employed 16S rRNA fingerprinting and high throughput sequencing combined with the GeoChip functional microarray. The soil community was revealed as a highly diverse reservoir of bacterial diversity dominated by actinobacteria. Hypolithic communities were less diverse and dominated by cyanobacteria. Major differences in putative functionality were that soil communities displayed greater diversity in stress tolerance and recalcitrant substrate utilization pathways, whilst hypolithic communities supported greater diversity of nutrient limitation adaptation pathways. A relatively high level of functional redundancy in both soil and hypoliths may indicate adaptation of these communities to fluctuating environmental conditions.",
author = "Wei, {Sean T S} and Lacap-Bugler, {Donnabella C} and Lau, {Maggie C Y} and Tancredi Caruso and Subramanya Rao and {de Los Rios}, Asunci{\'o}n and Archer, {Stephen K} and Chiu, {Jill M Y} and Colleen Higgins and {Van Nostrand}, {Joy D} and Jizhong Zhou and Hopkins, {David W} and Pointing, {Stephen B}",
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Wei, STS, Lacap-Bugler, DC, Lau, MCY, Caruso, T, Rao, S, de Los Rios, A, Archer, SK, Chiu, JMY, Higgins, C, Van Nostrand, JD, Zhou, J, Hopkins, DW & Pointing, SB 2016, 'Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica', Frontiers in Microbiology, vol. 7, 1642. https://doi.org/10.3389/fmicb.2016.01642

Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica. / Wei, Sean T S; Lacap-Bugler, Donnabella C; Lau, Maggie C Y; Caruso, Tancredi; Rao, Subramanya; de Los Rios, Asunción; Archer, Stephen K; Chiu, Jill M Y; Higgins, Colleen; Van Nostrand, Joy D; Zhou, Jizhong; Hopkins, David W; Pointing, Stephen B.

In: Frontiers in Microbiology, Vol. 7, 1642, 20.10.2016.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Taxonomic and functional diversity of soil and hypolithic microbial communities in Miers Valley, McMurdo Dry Valleys, Antarctica

AU - Wei, Sean T S

AU - Lacap-Bugler, Donnabella C

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AU - Rao, Subramanya

AU - de Los Rios, Asunción

AU - Archer, Stephen K

AU - Chiu, Jill M Y

AU - Higgins, Colleen

AU - Van Nostrand, Joy D

AU - Zhou, Jizhong

AU - Hopkins, David W

AU - Pointing, Stephen B

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AB - The McMurdo Dry Valleys of Antarctica are an extreme polar desert. Mineral soils support subsurface microbial communities and translucent rocks support development of hypolithic communities on ventral surfaces in soil contact. Despite significant research attention, relatively little is known about taxonomic and functional diversity or their inter-relationships. Here we report a combined diversity and functional interrogation for soil and hypoliths of the Miers Valley in the McMurdo Dry Valleys of Antarctica. The study employed 16S rRNA fingerprinting and high throughput sequencing combined with the GeoChip functional microarray. The soil community was revealed as a highly diverse reservoir of bacterial diversity dominated by actinobacteria. Hypolithic communities were less diverse and dominated by cyanobacteria. Major differences in putative functionality were that soil communities displayed greater diversity in stress tolerance and recalcitrant substrate utilization pathways, whilst hypolithic communities supported greater diversity of nutrient limitation adaptation pathways. A relatively high level of functional redundancy in both soil and hypoliths may indicate adaptation of these communities to fluctuating environmental conditions.

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