2021年7月9日
Early origin of sweet perception in the songbird radiation
Science
- 巻
- 373
- 号
- 6551
- 開始ページ
- 226
- 終了ページ
- 231
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1126/science.abf6505
- 出版者・発行元
- American Association for the Advancement of Science ({AAAS})
Early events in the evolutionary history of a clade can shape the sensory systems of descendant lineages. Although the avian ancestor may not have had a sweet receptor, the widespread incidence of nectar-feeding birds suggests multiple acquisitions of sugar detection. In this study, we identify a single early sensory shift of the umami receptor (the T1R1-T1R3 heterodimer) that conferred sweet-sensing abilities in songbirds, a large evolutionary radiation containing nearly half of all living birds. We demonstrate sugar responses across species with diverse diets, uncover critical sites underlying carbohydrate detection, and identify the molecular basis of sensory convergence between songbirds and nectar-specialist hummingbirds. This early shift shaped the sensory biology of an entire radiation, emphasizing the role of contingency and providing an example of the genetic basis of convergence in avian evolution.
- ID情報
-
- DOI : 10.1126/science.abf6505
- ORCIDのPut Code : 96746767
- PubMed ID : 34244416