Embryonic expression patterns of Wnt genes in the RTA-clade spider Cupiennius salei

被引:1
|
作者
Janssen, Ralf [1 ]
Eriksson, Bo Joakim [2 ]
机构
[1] Uppsala Univ, Dept Earth Sci, Palaeobiol, Villavagen 16, S-75236 Uppsala, Sweden
[2] Univ Wien, Dept Neurowissensch & Entwicklungsbiol, Djerassiplatz 1, A-1030 Vienna, Austria
基金
瑞典研究理事会; 奥地利科学基金会;
关键词
Spider development; Wingless; RTA clade; Chelicerata; POSTERIOR DEVELOPMENT; GROWTH-ZONE; EVOLUTION; SEGMENTATION; LABRUM;
D O I
10.1016/j.gep.2022.119247
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Spiders represent widely used model organisms for chelicerate and even arthropod development and evolution. Wnt genes are important and evolutionary conserved factors that control and regulate numerous developmental processes. Recent studies comprehensively investigated the complement and expression of spider Wnt genes revealing conserved as well as diverged aspects of their expression and thus (likely) function among different groups of spiders representing Mygalomorphae (tarantulas), and both main groups of Araneae (true spiders) (Haplogynae/Synspermiata and Entelegynae). The allegedly most modern/derived group of entelegyne spiders is represented by the RTA-clade of which no comprehensive data on Wnt expression were available prior to this study. Here, we investigated the embryonic expression of all Wnt genes of the RTA-clade spider Cupiennius salei. We found that most of the Wnt expression patterns are conserved between Cupiennius and other spiders, especially more basally branching species. Surprisingly, most differences in Wnt gene expression are seen in the common model spider Parasteatoda tepidariorum (a non-RTA clade entelegyne species). These results show that data and conclusions drawn from research on one member of a group of animals (or any other organism) cannot necessarily be extrapolated to the group as a whole, and instead highlight the need for comprehensive taxon sampling.
引用
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页数:10
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