イシマル　ヨシロウ   ISHIMARU YOSHIRO   石丸　喜朗    所属   明治大学  農学部    職種   専任教授
言語種別	日本語
発行・発表の年月	2021/07
形態種別	学術雑誌
査読	査読あり
標題	Early origin of sweet perception in the songbird radiation.
執筆形態	共著(筆頭者以外)
掲載誌名	Science (New York, N.Y.)
掲載区分	国外
巻・号・頁	373(6551),226-231頁
著者・共著者	Toda Yasuka, Ko Meng-Ching, Liang Qiaoyi, Miller Eliot T, Rico-Guevara Alejandro, Nakagita Tomoya, Sakakibara Ayano, Uemura Kana, Sackton Timothy, Hayakawa Takashi, Sin Simon Yung Wa, Ishimaru Yoshiro, Misaka Takumi, Oteiza Pablo, Crall James, Edwards Scott V, Buttemer William, Matsumura Shuichi, Baldwin Maude W
概要	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.
DOI	10.1126/science.abf6505
ISSN	1095-9203
PMID	34244416