A genetic signature of the evolution of loss of flight in the Galapagos cormorant.
A genetic signature of the evolution of loss of flight in the Galapagos cormorant.
复制标题
加拉帕戈斯菌神丧失飞行的演变的遗传标志。
DOI:
10.1126/science.aal3345
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发表时间:
2017-06-02
期刊:
影响因子:
--
通讯作者:
Kruglyak L
中科院分区:
文献类型:
--
作者:
Burga A;Wang W;Ben-David E;Wolf PC;Ramey AM;Verdugo C;Lyons K;Parker PG;Kruglyak L
We have a limited understanding of the genetic and molecular basis of evolutionary changes in the size and proportion of limbs. We studied wing and pectoral skeleton reduction leading to flightlessness in the Galapagos cormorant (Phalacrocorax harrisi). We sequenced and de novo assembled the genomes of four cormorant species and applied a predictive and comparative genomics approach to find candidate variants that may have contributed to the evolution of flightlessness. These analyses and cross-species experiments in C. elegans and in chondrogenic cell lines implicated variants in genes necessary for transcriptional regulation and function of the primary cilium. Cilia are essential for Hedgehog signaling, and humans affected by skeletal ciliopathies suffer from premature bone growth arrest, mirroring skeletal features associated with loss of flight.
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