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oai:riuma.uma.es:10630/328622026-02-03T10:57:18Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Wang, Zhuo author Pascual-Anaya, Juan author Zadissa, Amonida author Li, Wenqi author Niimura, Yoshihito author Huang, Zhiyong author Li, Chunyi author White, Simon author Xiong, Zhiqiang author Fang, Dongming author Wang, Bo author Ming, Yao author Chen, Yan author Zheng, Yuan author Kuraku, Shigehiro author Pignatelli, Miguel author Herrero, Javier author Beal, Kathryn author Nozawa, Masafumi author Li, Qiye author Wang, Juan author Zhang, Hongyan author Yu, Lili author Shigenobu, Shuji author Wang, Junyi author Liu, Jiannan author Flicek, Paul author Searle, Steve author Wang, Jun author Kuratani, Shigeru author Yin, Ye author Aken, Bronwen author Zhang, Guojie author Irie, Naoki author 2013-06 The unique anatomical features of turtles have raised unanswered questions about the origin of their unique body plan. We generated and analyzed draft genomes of the softshell turtle (Pelodiscus sinensis) and the green sea turtle (Chelonia mydas); our results indicated the close relationship of the turtles to the bird-crocodilian lineage, from which they split ~267.9–248.3 million years ago (Upper Permian to Triassic). We also found extensive expansion of olfactory receptor genes in these turtles. Embryonic gene expression analysis identified an hourglass-like divergence of turtle and chicken embryogenesis, with maximal conservation around the vertebrate phylotypic period, rather than at later stages that show the amniotecommon pattern. Wnt5a expression was found in the growth zone of the dorsal shell, supporting the possible co-option of limb-associated Wnt signaling in the acquisition of this turtlespecific novelty. Our results suggest that turtle evolution was accompanied by an unexpectedly conservative vertebrate phylotypic period, followed by turtle-specific repatterning of development to yield the novel structure of the shell. Wang, Z., Pascual-Anaya, J., Zadissa, A. et al. The draft genomes of soft-shell turtle and green sea turtle yield insights into the development and evolution of the turtle-specific body plan. Nat Genet 45, 701–706 (2013). https://doi.org/10.1038/ng.2615 https://hdl.handle.net/10630/32862 10.1038/ng.2615 Tortugas - Filogenia The draft genomes of soft­shell turtle and green sea turtle yield insights into the development and evolution of the turtle­ specific body plan