5400a04a-01ba-46d3-8470-d256219e6a6a https://ipt.biodiversity.aq/resource?r=associated_microbiome_antarctic_sea_stars Associated microbiome (Bacteria and Fungi) in Antarctic sea stars (healthy versus exhibiting epidermal disease) Laura Núñez-Pons Stazione Zoologica Anton Dohrn
Napoli
Thierry Work US Geological Survey
Honolulu US
Carlos Angulo-Preckler University of Barcelona
Barcelona ES
Juan Moles Museum of Comparative Zoology & Department of Organismic and Evolutionary Biology
Cambridge GB
Conxita Avila University of Barcelona
Barcelona ES
Maxime Sweetlove Royal Belgian Institute for Natural Sciences Research assistent
Rue Vautier 29 Brussels 1000
msweetlove@naturalsciences.be
user 2019-03-19 eng Amplicon sequencing dataset (Illumina MiSeq) of bacteria (16S ssu rRNA gene) and Fungi (ITS) associated with healthy and diseased Antarctic sea stars (Odontaster validus) Metadata GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License. Deception island, Antarctica -60.64 -60.64 -62.95 -62.95 microbiome (bacteria (16S ssu rRNA gene) and Fungi (ITS)) associated with Antarctic sea stars (Odontaster validus) species Odontaster validus sea star domain Bacteria Bacteria kingdom Fungi Fungi unkown Laura Núñez-Pons Stazione Zoologica Anton Dohrn
Napoli
DNA from healthy and lesioned tissues of healthy and diseased stars were extracted using a modified C-TAB organic extraction protocol for amplicon deep sequencing of ribosomal gene target markers on MiSeq (Illumina), for bacterial/archaeal and fungal community composition, which were performed with a two-PCR protocol and two dual-index strategy. In the first PCR, we used bacterial specific primers to amplify the V3–V4 region of the small-subunit ribosomal RNA (16S) gene (341 F and 785 R); and fungi-specific primers ITS1F41 and ITS2R targeting the internal transcribed spacer 1 (ITS1) region of fungi. Amplifications were performed in 25 µl reactions with NEBNext® Q5® Hot Start HiFi PCR Master Mix (New England Biolabs, Inc.), 0.8 µl BSA (Bovine Serum Albumin; 20 mg/ml), 1 µl of each 5 µM primer, and 1.5 µl of template. Reactions were under the thermocycling profile: 98 °C for 2 min, then 28 cycles of 98 °C for 15 s, 53 °C for 30 s, 72 °C for 30 s, final extension at 72 °C for 2 min. The second Index PCR to attach dual indexes and Illumina sequencing adapters used forward primers with the 5′-3′ Illumina i5 adapter (AATGATACGGCGACCACCGAGATCTACAC), an 8–10 bp barcode and a primer pad; and reverse fusion primers with 5′-3′ Illumina i7 adapter (CAAGCAGAAGACGGCATACGAGAT), an 8–10 bp barcode, a primer pad. Reactions were made in 25 μl with 0.5 µl of each 5 µM primer, and 1 µl of corresponding products from first amplicon PCR reactions diluted (1:30), and with a temperature regime of: 98 °C for 2 min, then 28 cycles of 98 °C for 15 s, 55 °C for 30 s, 72 °C for 30 s, final extension at 72 °C for 2 min. The PCR products were purified and pooled equimolar on Just-a-Plate™ 96 PCR Purification and Normalization Kit plates following manufacturer’s instructions (Charm Biotec). Paired-end sequencing was performed on an Illumina MiSeq sequencer 2 × 300 flow cell at 10 pM at Core Lab, Hawai’i Institute of Marine Biology (Hawai’i, USA). Transect surveys were conducted to assess the prevalence of epidermal lesions in sea stars around Port Foster’s bay (Deception Island) during the Antarctic expedition ACTIQUIM-4 (January–February 2013). Five haphazardly chosen replicate 50-m linear transects were surveyed at 5 m and 15 m depth at eight sites around the bay (80 transects in total). Apparently healthy O. validus and specimens with lesions were recorded within 2 m of each transect line. The census was repeated in 2016. Twenty-five healthy and diseased O validus (n = 50) were collected by SCUBA diving on February 2013. Tissue biopsies (1 cm3) were removed with sterile scalpel from 30 individuals (15 healthy and 15 diseased) as follows: 15 sections from healthy specimens, 15 affected lesion fronts from diseased sea stars, and 15 tissue areas several cm away from the lesions of the same diseased specimens. Samples were divided in two subsamples, one preserved in 100% ethanol at −20 °C for DNA extraction and microbial characterization, and the other fixed in 2.5% paraformaldehyde in filtered sea water at 4 °C for histopathology studies. ACTIQUIM and DISTANTCOM Laura Núñez-Pons Project funding was obtained from the Spanish government through the ACTIQUIM and DISTANTCOM Projects (CGL2004-03356/ANT, CGL2007-65453/ANT, and CTM2010-17415/ANT; CTM2013-42667/ANT). additional support was provided by the Fundación Ramón Areces and Beatriu de Pinós Marie Curie CO-Fund Program (Catalonia).
2018-12-18T03:36:35.019+01:00 dataset Núñez-Pons L, Work T, Angulo-Preckler C, Moles J, Avila C (2018): Associated microbiome (Bacteria and Fungi) in Antarctic sea stars (healthy versus exhibiting epidermal disease). v1.2. SCAR - Microbial Antarctic Resource System. Dataset/Metadata. https://ipt.biodiversity.aq/resource?r=associated_microbiome_antarctic_sea_stars&v=1.2 Núñez-Pons, L., Work, T. M., Angulo-Preckler, C., Moles, J., & Avila, C. (2018). Exploring the pathology of an epidermal disease affecting a circum-Antarctic sea star. Scientific reports, 8(1), 11353. 2013-2016 5400a04a-01ba-46d3-8470-d256219e6a6a/v1.2.xml