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Nonhuman genetics. Genomic basis for the convergent evolution of electric organs.
Science.Jun 27, 2014;344(6191):1522-5.
Gallant JR, Traeger LL, Volkening JD, Moffett H, Chen PH, Novina CD, Phillips GN, Anand R, Wells GB, Pinch M, Güth R, Unguez GA, Albert JS, Zakon HH, Samanta MP, Sussman MR.
Biotechnology Center, University of Wisconsin, Madison, WI 53706, USA. Department of Biochemistry, University of Wisconsin, Madison, WI 53706, USA. firstname.lastname@example.org email@example.com firstname.lastname@example.org.
Little is known about the genetic basis of convergent traits that originate repeatedly over broad taxonomic scales. The myogenic electric organ has evolved six times in fishes to produce electric fields used in communication, navigation, predation, or defense. We have examined the genomic basis of the convergent anatomical and physiological origins of these organs by assembling the genome of the electric eel (Electrophorus electricus) and sequencing electric organ and skeletal muscle transcriptomes from three lineages that have independently evolved electric organs. Our results indicate that, despite millions of years of evolution and large differences in the morphology of electric organ cells, independent lineages have leveraged similar transcription factors and developmental and cellular pathways in the evolution of electric organs.