期刊
SCIENCE
卷 299, 期 5606, 页码 565-568出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1077827
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资金
- NICHD NIH HHS [N01-HD-7-3263] Funding Source: Medline
- NIDCR NIH HHS [R03 DE014795-01, T32 DE07236, R03 DE014795, R29 DE12462-03, K02 DE 00421] Funding Source: Medline
Cellular and molecular mechanisms underlying differences in beak morphology likely involve interactions among multiple embryonic populations. We exchanged neural crest cells destined to participate in beak morphogenesis between two anatomically distinct species. Quail neural crest cells produced quail beaks in duck hosts and duck neural crest produced duck bills in quail hosts. These transformations involved morphological changes to non neural crest host beak tissues. To achieve these changes, donor neural crest cells executed autonomous molecular programs and regulated gene expression in adjacent host tissues. Thus, neural crest cells are a source of molecular information that generates interspecific variation in beak morphology.
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