Bacteria on mummified seals in the Antarctic Dry Valleys

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Researchers should cite this work as follows:

Tiao G, Lee C, McDonald I, Cowan D, Cary C (2019): Bacteria on mummified seals in the Antarctic Dry Valleys. v1.2. SCAR - Microbial Antarctic Resource System. Dataset/Metadata. https://ipt.biodiversity.aq/resource?r=antarctic_dry_valley_mummified_seal_microbiome&v=1.2

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The publisher and rights holder of this work is SCAR - Microbial Antarctic Resource System. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

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This resource has been registered with GBIF, and assigned the following GBIF UUID: a3fb3af6-724d-4de3-ace8-4fa21cc729ed.  SCAR - Microbial Antarctic Resource System publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Scientific Committee on Antarctic Research.

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Geographic Coverage

soil samples from under and around mummified crabeater seal near Lake Miers (S 78°05′36″, E 163°51′22″), Miers Valley, Victoria Land, Antarctica, that was transported to a similar site 20 m north.

Taxonomic Coverage

Amplicin sequencing of Bacteria (16S ssu rRNA gene)

Temporal Coverage

Project Data

No Description available

The personnel involved in the project:

Sampling Methods

Soil samples (>10 g each) were collected aseptically at a depth of 0.05m. Samples were stored in sterile plastic containers at −80 °C until analysis.

Method step description:

1. 16S rRNA gene were generated using the primer pair Tx9 (5′-GGATTAGAWACCCBGGTAGTC-3′) and 1391R (5′-GACGGGCRGTGWGTRCA-3′). PCR was performed in triplicate and pooled to reduce stochastic variability between reactions. Each 30 μl reaction contained 5 or 20 ng of extracted community DNA, Pfx polymerase and platinum polymerase (0.5 U each; Invitrogen), 1× Pfx PCR buffer with Pfx enhancer, 0.2 mM dNTPs, 1 mM MgCl2, 0.02 mg ml−1 BSA, 0.8 μM of forward and reverse primer, and PCR-grade water. Thermal cycling conditions were 94 °C for 2 min; 18 or 24 cycles of 94 °C for 15 s, 55 °C for 30 s and 68 °C for 1 min; and 68 °C for 3 min.
2. Amplicons were size-selected and purified using polyacrylamide gel electrophoresis before being prepared for pyrosequencing by Taxon Biosciences (Tiburon, CA, USA).

Bibliographic Citations

1. Tiao, G., Lee, C. K., McDonald, I. R., Cowan, D. A., & Cary, S. C. (2012). Rapid microbial response to the presence of an ancient relic in the Antarctic Dry Valleys. Nature Communications, 3, 660.

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