Genetic analyses in Lake Malawi cichlids identify new roles for Fgf signaling in scale shape variation.
Genetic analyses in Lake Malawi cichlids identify new roles for Fgf signaling in scale shape variation.
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DOI:
10.1038/s42003-018-0060-4
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发表时间:
2018
影响因子:
5.9
通讯作者:
Powder KE
中科院分区:
文献类型:
--
作者:
Albertson RC;Kawasaki KC;Tetrault ER;Powder KE
Elasmoid scales are the most common epithelial appendage among vertebrates, however an understanding of the genetic mechanisms that underlie variation in scale shape is lacking. Using an F2 mapping cross between morphologically distinct cichlid species, we identified >40 QTL for scale shape at different body positions. We show that while certain regions of the genome regulate variation in multiple scales, most are specific to scales at distinct positions. This suggests a degree of regional modularity in scale development. We also identified a single QTL for variation in scale shape disparity across the body. Finally, we screened a QTL hotspot for candidate loci, and identified the Fgf receptor fgfr1b as a prime target. Quantitative rtPCR and small molecule manipulation support a role for Fgf signaling in shaping cichlid scales. While Fgfs have previously been implicated in scale loss, these data reveal new roles for the pathway in scale shape variation. Craig Albertson et al. report a study of the genetic basis of scale shape variation in cichlids from Lake Malawi. They find 40 QTL for scale development, most of which are specific to distinct body locations, and a role for Fgf signaling in shaping cichlid scales.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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DOI:
10.1002/jez.b.22641
发表时间:
2015-12-15
影响因子:
2.2
作者:
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通讯作者:
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影响因子:
4.9
作者:
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通讯作者:
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