ArticleMolecular biology reports2022
Cloning, expression, and function of the Spdmrt-like gene in Scylla paramamosain.
Article in Molecular biology reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors at 2 institutions in 1 country.
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Abstract
backgroundThe mud crab Scylla paramamosain is an economically important species for aquaculture in China and has sexually dimorphic between females and males. Understanding sex differentiation in this species is essential for the development of monosex aquaculture. The Dmrt genes play a vital role in sex differentiation in animals. METHODS AND
resultsIn this study, two dmrt-like transcript variants, Spdmrt-like-tv1 and Spdmrt-like-v2, were cloned. SpDmrt-like-tv1 contained a DM domain, while SpDmrt-like-tv2 contained a DM and a DMA domain. Spdmrt-like-tv1 and Spdmrt-like-tv2 were both specifically expressed in testis. During testicular development, the expression level of Spdmrt-like-tv1 increased from stage I to stage II (P > 0.05) and then decreased from stage II to stage III (P < 0.05). The expression level of Spdmrt-like-tv2 in stages I and II was significantly higher than that in stage III (P < 0.05). During embryonic development, the expression level of Spdmrt-like-tv1 was higher in the mid-embryonic stage compared with the early and late stages, but the differences were not significant. Moreover, the expression level of Spdmrt-like-tv2 was stable and remained high throughout embryonic development. Furthermore, the expression level of Spdmrt-like-tv2 was significantly higher than that of Spdmrt-like-tv1. Knockdown of Spdmrt-like variants indicated that the regulative target gene of Spdmrt-like-tv1 was Spsox21, and the regulative target genes of Spdmrt-like-tv2 were Spfoxl2 and Spsox21. Combined with the results in our previously published peer-reviewed articles that the expression of Spfoxl2 in the testis was significantly higher than that in the ovary, and Spfoxl2 negatively regulated Spvtg expression. Spsox21 played a role in the development and maintenance of testis as well as in the process of neural development and regulation of body segmentation.
conclusionTherefore, we suggest that Spdmrt-like-tv1 and Spdmrt-like-tv2 might be involved in testicular development and embryonic development, and Spdmrt-like-tv2 might play more important roles in these two developmental processes by regulating the expression of Spfoxl2 and Spsox21 due to its high expression.
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