Early origin of sweet perception in the songbird radiation

doi:10.1126/science.abf6505

GSTDTAP > 气候变化

DOI	10.1126/science.abf6505
	Early origin of sweet perception in the songbird radiation
	Yasuka Toda; Meng-Ching Ko; Qiaoyi Liang; Eliot T. Miller; Alejandro Rico-Guevara; Tomoya Nakagita; Ayano Sakakibara; Kana Uemura; Timothy Sackton; Takashi Hayakawa; Simon Yung Wa Sin; Yoshiro Ishimaru; Takumi Misaka; Pablo Oteiza; James Crall; Scott V. Edwards; William Buttemer; Shuichi Matsumura; Maude W. Baldwin
	2021-07-09
发表期刊	Science
出版年	2021
英文摘要	Seeing a bird eat nectar from a flower is a common sight in our world. The ability to detect sugars, however, is not ancestral in the bird lineage, where most species were carnivorous. Toda et al. looked at receptors within the largest group of birds, the passerines or songbirds, and found that the emergence of sweet detection involved a single shift in a receptor for umami (see the Perspective by Barker). This ancient change facilitated sugar detection not just in nectar feeding birds, but also across the songbird group, and in a way that was different from, though convergent with, that in hummingbirds. Science , abf6505, this issue p. [226][1]; see also abj6746, p. [154][2] 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. [1]: /lookup/doi/10.1126/science.abf6505 [2]: /lookup/doi/10.1126/science.abj6746
领域	气候变化 ; 资源环境
URL	查看原文
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/334282
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Yasuka Toda,Meng-Ching Ko,Qiaoyi Liang,et al. Early origin of sweet perception in the songbird radiation[J]. Science,2021.
APA	Yasuka Toda.,Meng-Ching Ko.,Qiaoyi Liang.,Eliot T. Miller.,Alejandro Rico-Guevara.,...&Maude W. Baldwin.(2021).Early origin of sweet perception in the songbird radiation.Science.
MLA	Yasuka Toda,et al."Early origin of sweet perception in the songbird radiation".Science (2021).