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.
复制标题

DOI:
10.1038/s42003-018-0060-4
复制
发表时间:
2018
影响因子:
5.9
通讯作者:
Powder KE
Powder KE
中科院分区:
生物学2区
文献类型:
--
作者:
Albertson RC;Kawasaki KC;Tetrault ER;Powder KE

文献摘要

参考文献

被引文献

相似文献

弹性鳞片是脊椎动物中最常见的上皮性附属物,但对鳞片形状变异的遗传机制缺乏了解。利用形态上不同种类间的F2定位杂交,我们定位了不同体位鳞片形状的>40个QTL。我们表明,虽然基因组的某些区域在多个尺度上调节变异,但大多数区域是特定于不同位置的尺度的。这表明,在规模发展方面,存在一定程度的区域模块化。我们还确定了影响全身鳞片形状差异的单个QTL。最后,我们筛选了候选基因的QTL热点,并确定了成纤维细胞生长因子受体fgfr1b为主要靶点。定量逆转录聚合酶链式反应和小分子操作支持成纤维细胞生长因子信号在形成鱼鳞中的作用。虽然FGFs以前被认为与鳞片丢失有关,但这些数据揭示了该途径在鳞片形状变化中的新作用。克雷格·阿尔伯特森等人。马拉维湖池鱼鳞片形状变异的遗传基础研究报告。他们发现了40个与鳞片发育有关的QTL,其中大部分是针对不同的身体位置,以及成纤维细胞生长因子信号在形成鱼鳞中的作用。
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.
DOI: 10.1016/j.ydbio.2013.02.007
发表时间: 2013-05-15
影响因子: 2.7
作者:
Fraser, Gareth J.;Bloomquist, Ryan F.;Streelman, J. Todd
通讯作者: Streelman, J. Todd
DOI: 10.1093/molbev/msv208
发表时间: 2016-01-01
影响因子: 10.7
作者:
Daane, Jacob M.;Rohner, Nicolas;Harris, Matthew P.
通讯作者: Harris, Matthew P.
DOI: 10.1186/1471-2164-12-4
发表时间: 2011-01-04
期刊: BMC genomics
影响因子: 4.4
作者:
Chutimanitsakun Y;Nipper RW;Cuesta-Marcos A;Cistué L;Corey A;Filichkina T;Johnson EA;Hayes PM
通讯作者: Hayes PM
DOI: 10.1002/jez.b.22641
发表时间: 2015-12-15
影响因子: 2.2
作者:
Concannon, Moira R.;Albertson, R. Craig
通讯作者: Albertson, R. Craig
DOI: 10.1111/mec.12900
发表时间: 2014-11
期刊: Molecular ecology
影响因子: 4.9
作者:
Albertson RC;Powder KE;Hu Y;Coyle KP;Roberts RB;Parsons KJ
通讯作者: Parsons KJ