Expressed Vomeronasal Type-1 Receptors (V1rs) in Bats Uncover Conserved Sequences Underlying Social Chemical Signaling
Expressed Vomeronasal Type-1 Receptors (V1rs) in Bats Uncover Conserved Sequences Underlying Social Chemical Signaling
复制标题
蝙蝠中表达的犁鼻 1 型受体 (V1rs) 揭示了社会化学信号传导背后的保守序列
DOI:
10.1093/gbe/evz179
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发表时间:
2019
影响因子:
3.3
通讯作者:
Chang, Belinda
中科院分区:
文献类型:
--
作者:
Yohe, Laurel R;Davies, Kalina T;Rossiter, Stephen J;Dávalos, Liliana M;Chang, Belinda
In mammals, social and reproductive behaviors are mediated by chemical cues encoded by hyperdiverse families of receptors expressed in the vomeronasal organ. Between species, the number of intact receptors can vary by orders of magnitude. However, the evolutionary processes behind variation in receptor number, and its link to fitness-related behaviors are not well understood. From vomeronasal transcriptomes, we discovered the first evidence of intactvomeronasal type-1 receptor(V1r) genes in bats, and we tested whether putatively functional bat receptors were orthologous to those of related taxa, or whether bats have evolved novel receptors. Instead of lineage-specific duplications, we found that batV1rs show high levels of orthology to those of their relatives, and receptors are under comparative levels of purifying selection as non-bats. Despite widespread vomeronasal organ loss in bats,V1rcopies have been retained for >65 million years. The highly conserved nature of batV1rs challenges our current understanding of mammalianV1rfunction and suggests roles other than conspecific recognition or mating initiation in social behavior.
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