The Mechanism for Establishing the Binary Sex with Environmental Signals in the Crustacean Daphnia magna
The Mechanism for Establishing the Binary Sex with Environmental Signals in the Crustacean Daphnia magna
复制标题
甲壳类大型水蚤通过环境信号建立二性的机制
DOI：
10.1007/978-981-19-5359-0_12
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Watanabe Hajime
中科院分区：
文献类型：
--
作者：
Kato Yasuhiko;Watanabe Hajime
在健康的条件下，枝节甲壳动物大型蚤（Daphnia magna）单性生殖产生雌性。为了应对环境压力，如饥饿和更高的人口密度，它产生了与姐妹篇基因相同的雄性。环境依赖型雄性生产可以解释为在环境线索的作用下，雄性在谱系上的位置从雌性向雄性转移。本文主要介绍了环境依赖性雄性决定是如何通过内分泌系统和进化上保守的性别决定基因Dsx1来介导的。然后，我们描述了如何通过调控dsx1在转录，表观遗传和转录后水平，以防止间性表型可以实现的二元性别。
The cladoceran crustaceanDaphnia magnaproduces females parthenogenetically under healthy conditions. In response to environmental stresses such as starvation and higher population density, it produces males that are genetically identical to their sisters. Environment-dependent male production inD. magnacan be interpreted as the shift of the position of the sex on the spectrum from the female side to the male side by the environmental cues. In this review, we introduce how the environment-dependent male determination is mediated via the endocrine system and the evolutionary conserved sex-determining geneDoublesex1(Dsx1) inD. magna. We then describe how the binary sex can be achieved by regulation ofDsx1at transcriptional, epigenetic, and post-transcriptional levels to prevent intersex phenotype.