The house spider genome reveals an ancient whole-genome duplication during arachnid evolution
By
Evelyn E Schwager,
Prashant P. Sharma,
Thomas Clarke,
Daniel J. Leite,
Torsten Wierschin,
Matthias Pechmann,
Yasuko Akiyama-Oda,
Lauren Esposito,
Jesper Bechsgaard,
Trine Bilde,
Alexandra D. Buffry,
Hsu Chao,
Huyen Dinh,
harshavardhan doddapaneni,
Shannon Dugan,
Cornelius Eibner,
Cassandra G. Extavour,
Peter Funch,
Jessica Garb,
Luis B. Gonzalez,
Vanessa L Gonzalez,
Sam Griffiths-Jones,
Yi Han,
Cheryl Hayashi,
Maarten Hilbrant,
Daniel S.T. Hughes,
Ralf Janssen,
Sandra L. Lee,
Ignacio Maeso,
Shwetha C. Murali,
Donna M. Muzny,
Rodrigo Nunes da Fonseca,
Christian L. B. Paese,
Jiaxin Qu,
Matthew Ronshaugen,
Christoph Schomburg,
Anna Schönauer,
Angelika Stollewerk,
Montserrat Torres-Oliva,
Natascha Turetzek,
Bram Vanthournout,
John Werren,
Carsten Wolff,
Kim C Worley,
Gregor Bucher,
Richard A. Gibbs,
Jonathan Coddington,
Hiroki Oda,
Mario Stanke,
Nadia A. Ayoub,
Nikola-Michael Prpic,
Jean-Frangois Flot,
Nico Posnien,
Stephen Richards,
Alistair P. McGregor
Posted 08 Feb 2017
bioRxiv DOI: 10.1101/106385
(published DOI: 10.1186/s12915-017-0399-x)
The duplication of genes can occur through various mechanisms and is thought to make a major contribution to the evolutionary diversification of organisms. There is increasing evidence for a large-scale duplication of genes in some chelicerate lineages including two rounds of whole genome duplication (WGD) in horseshoe crabs. To investigate this further we sequenced and analyzed the genome of the common house spider Parasteatoda tepidariorum. We found pervasive duplication of both coding and non-coding genes in this spider, including two clusters of Hox genes. Analysis of synteny conservation across the P. tepidariorum genome suggests that there has been an ancient WGD in spiders. Comparison with the genomes of other chelicerates, including that of the newly sequenced bark scorpion Centruroides sculpturatus, suggests that this event occurred in the common ancestor of spiders and scorpions and is probably independent of the WGDs in horseshoe crabs. Furthermore, characterization of the sequence and expression of the Hox paralogs in P. tepidariorum suggests that many have been subject to neofunctionalization and/or subfunctionalization since their duplication, and therefore may have contributed to the diversification of spiders and other pulmonate arachnids.
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