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The genome of the Antarctic-endemic copepod, Tigriopus kingsejongensis.

The genome of the Antarctic-endemic copepod, Tigriopus kingsejongensis.

Authors :
Seunghyun Kang
Do-Hwan Ahn
Jun Hyuck Lee
Sung Gu Lee
Seung Chul Shin
Jungeun Lee
Gi-Sik Min
Hyoungseok Lee
Hyun-Woo Kim
Sanghee Kim
Park, Hyun
Source :
GigaScience. Jan2017, Vol. 6 Issue 1, p1-9. 9p.
Publication Year :
2017

Abstract

Background: The Antarctic intertidal zone is continuously subjected to extremely fluctuating biotic and abiotic stressors. The West Antarctic Peninsula is the most rapidly warming region on Earth. Organisms living in Antarctic intertidal pools are therefore interesting for research into evolutionary adaptation to extreme environments and the effects of climate change. Findings: We report the whole genome sequence of the Antarctic-endemic harpacticoid copepod Tigriopus kingsejongensi. The 37 Gb raw DNA sequence was generated using the Illumina Miseq platform. Libraries were prepared with 65-fold coverage and a total length of 295 Mb. The final assembly consists of 48 368 contigs with an N50 contig length of 17.5 kb, and 27 823 scaffolds with an N50 contig length of 159.2 kb. A total of 12 772 coding genes were inferred using the MAKER annotation pipeline. Comparative genome analysis revealed that T. kingsejongensis-specific genes are enriched in transport and metabolism processes. Furthermore, rapidly evolving genes related to energy metabolism showed positive selection signatures. Conclusions: The T. kingsejongensis genome provides an interesting example of an evolutionary strategy for Antarctic cold adaptation, and offers new genetic insights into Antarctic intertidal biota. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
2047217X
Volume :
6
Issue :
1
Database :
Academic Search Index
Journal :
GigaScience
Publication Type :
Academic Journal
Accession number :
125145040
Full Text :
https://doi.org/10.1093/gigascience/giw010