Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica
© 2014, Springer-Verlag Berlin Heidelberg.The majority of biomass in the McMurdo Dry Valleys of Antarctica occurs within rocks and soils, but despite the wealth of biodiversity data very little is known about the potential functionality of communities within these substrates. The putative physiologi...
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Online Access: | https://doi.org/10.1007/s00300-014-1598-3 http://hdl.handle.net/10722/236691 |
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ftunivhongkonghu:oai:hub.hku.hk:10722/236691 2023-05-15T13:46:02+02:00 Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica Chan, Yuki Fernandez-Martinez, Miguel Angel Wei, Sean T S Pointing, Stephen B. Zhou, Jizhong Cary, S. Craig Ganeshram, Annapoorna Maitrayee Chiu, Jill M Y de los Rios-Murillo, Asuncion Van Nostrand, Joy D. 2015 https://doi.org/10.1007/s00300-014-1598-3 http://hdl.handle.net/10722/236691 eng eng Polar Biology Polar Biology, 2015, v. 38, n. 4, p. 433-443 doi:10.1007/s00300-014-1598-3 443 0722-4060 4 eid_2-s2.0-84925463131 433 http://hdl.handle.net/10722/236691 38 Geochip Stress response Antarctica Chasmoendolith Dry Valleys Article 2015 ftunivhongkonghu https://doi.org/10.1007/s00300-014-1598-3 2023-01-14T16:17:38Z © 2014, Springer-Verlag Berlin Heidelberg.The majority of biomass in the McMurdo Dry Valleys of Antarctica occurs within rocks and soils, but despite the wealth of biodiversity data very little is known about the potential functionality of communities within these substrates. The putative physiological capacity of microbial communities in granite boulders (chasmoendoliths) and soils of a maritime-influenced Antarctic Dry Valleys were interrogated using the GeoChip microarray. Diversity estimates revealed surprisingly high diversity and evenness in both communities, with Chlorobi and Deinococci in soils accounting for major differences between the substrates. Autotrophs were more diverse in chasmoendoliths, and diazotrophs more diverse in soils. Both substrates revealed a previously unappreciated abundance of Halobacteria (Archaea), Ascomycota (Fungi) and Basidiomycoyta (Fungi). The fungi accounted for much of the differences between substrates in metabolic pathways associated with carbon transformations, particularly for aromatic compounds. Nitrogen fixation genes were more common in soils, although nitrogen catabolism genes were abundant in chasmoendoliths. Stress response pathways were more diverse in chasmoendoliths, possibly reflecting greater environmental stress in this exposed substrate compared with subsurface soils. Overall diversity of stress-tolerance genes was markedly lower than that recorded for inland locations where environmental stress is exacerbated. We postulate that the chasmoendolithic community occupies a key role in biogeochemical transformations in Dry Valley systems where granite substrates are abundant among open soils. The findings indicate that a substantial upward revision to estimates of biologically active surfaces in this system is warranted. Link_to_subscribed_fulltext Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology University of Hong Kong: HKU Scholars Hub Antarctic McMurdo Dry Valleys Miers ENVELOPE(163.850,163.850,-78.100,-78.100) Miers Valley ENVELOPE(164.200,164.200,-78.100,-78.100) Polar Biology 38 4 433 443 |
institution |
Open Polar |
collection |
University of Hong Kong: HKU Scholars Hub |
op_collection_id |
ftunivhongkonghu |
language |
English |
topic |
Geochip Stress response Antarctica Chasmoendolith Dry Valleys |
spellingShingle |
Geochip Stress response Antarctica Chasmoendolith Dry Valleys Chan, Yuki Fernandez-Martinez, Miguel Angel Wei, Sean T S Pointing, Stephen B. Zhou, Jizhong Cary, S. Craig Ganeshram, Annapoorna Maitrayee Chiu, Jill M Y de los Rios-Murillo, Asuncion Van Nostrand, Joy D. Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
topic_facet |
Geochip Stress response Antarctica Chasmoendolith Dry Valleys |
description |
© 2014, Springer-Verlag Berlin Heidelberg.The majority of biomass in the McMurdo Dry Valleys of Antarctica occurs within rocks and soils, but despite the wealth of biodiversity data very little is known about the potential functionality of communities within these substrates. The putative physiological capacity of microbial communities in granite boulders (chasmoendoliths) and soils of a maritime-influenced Antarctic Dry Valleys were interrogated using the GeoChip microarray. Diversity estimates revealed surprisingly high diversity and evenness in both communities, with Chlorobi and Deinococci in soils accounting for major differences between the substrates. Autotrophs were more diverse in chasmoendoliths, and diazotrophs more diverse in soils. Both substrates revealed a previously unappreciated abundance of Halobacteria (Archaea), Ascomycota (Fungi) and Basidiomycoyta (Fungi). The fungi accounted for much of the differences between substrates in metabolic pathways associated with carbon transformations, particularly for aromatic compounds. Nitrogen fixation genes were more common in soils, although nitrogen catabolism genes were abundant in chasmoendoliths. Stress response pathways were more diverse in chasmoendoliths, possibly reflecting greater environmental stress in this exposed substrate compared with subsurface soils. Overall diversity of stress-tolerance genes was markedly lower than that recorded for inland locations where environmental stress is exacerbated. We postulate that the chasmoendolithic community occupies a key role in biogeochemical transformations in Dry Valley systems where granite substrates are abundant among open soils. The findings indicate that a substantial upward revision to estimates of biologically active surfaces in this system is warranted. Link_to_subscribed_fulltext |
format |
Article in Journal/Newspaper |
author |
Chan, Yuki Fernandez-Martinez, Miguel Angel Wei, Sean T S Pointing, Stephen B. Zhou, Jizhong Cary, S. Craig Ganeshram, Annapoorna Maitrayee Chiu, Jill M Y de los Rios-Murillo, Asuncion Van Nostrand, Joy D. |
author_facet |
Chan, Yuki Fernandez-Martinez, Miguel Angel Wei, Sean T S Pointing, Stephen B. Zhou, Jizhong Cary, S. Craig Ganeshram, Annapoorna Maitrayee Chiu, Jill M Y de los Rios-Murillo, Asuncion Van Nostrand, Joy D. |
author_sort |
Chan, Yuki |
title |
Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
title_short |
Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
title_full |
Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
title_fullStr |
Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
Diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of Miers Valley, McMurdo Dry Valleys, Antarctica |
title_sort |
diverse metabolic and stress-tolerance pathways in chasmoendolithic and soil communities of miers valley, mcmurdo dry valleys, antarctica |
publishDate |
2015 |
url |
https://doi.org/10.1007/s00300-014-1598-3 http://hdl.handle.net/10722/236691 |
long_lat |
ENVELOPE(163.850,163.850,-78.100,-78.100) ENVELOPE(164.200,164.200,-78.100,-78.100) |
geographic |
Antarctic McMurdo Dry Valleys Miers Miers Valley |
geographic_facet |
Antarctic McMurdo Dry Valleys Miers Miers Valley |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology |
op_relation |
Polar Biology Polar Biology, 2015, v. 38, n. 4, p. 433-443 doi:10.1007/s00300-014-1598-3 443 0722-4060 4 eid_2-s2.0-84925463131 433 http://hdl.handle.net/10722/236691 38 |
op_doi |
https://doi.org/10.1007/s00300-014-1598-3 |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
4 |
container_start_page |
433 |
op_container_end_page |
443 |
_version_ |
1766235219058229248 |