Re-Examination of Sibling Cross-Sterility in the Ascidian, Ciona intestinalis: Genetic Background of the Self-Sterility
Re-Examination of Sibling Cross-Sterility in the Ascidian, Ciona intestinalis: Genetic Background of the Self-Sterility
复制标题
海鞘海鞘同胞交叉不育的再检查：自不育的遗传背景
DOI：
10.2108/zsj.19.527
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发表时间：
2002
影响因子：
3.1
通讯作者：
M. Hoshi
中科院分区：
文献类型：
--
作者：
N. Murabe;M. Hoshi
摘要孤生海鞘的自身不育是异源识别的一个典型例子，但其分子机制仍是一个未知数。本文分析了海鞘Ciona nativae自交和杂交卵同胞间的育性，以了解海鞘Ciona nativae自交不育的遗传基础。首先，我们证明了在我们使用的野生群体中，自花不育是严格和稳定的，配子中表达的个性是高度多样化的。其次，我们发现了单交不育和互交不育的同胞是自交不育，但与非同胞可育。第三，我们发现自花不育和杂交不育具有某些共同的性质，它们都与精子不能与自体卵的卵黄膜结合或卵不能与有关精子结合密切相关。总之，本文表明，自花不育性是由一个多位点系统的遗传，最有可能的个人特定的决定因素是在精子中的单倍体表达和卵子中的二倍体表达，因为他们认识到自己，但不是非自己。
Abstract Self-sterility of solitary ascidians is a typical example of the allogeneic recognition, though its molecular mechanism remains an open question. In this paper we analyze the fertility between siblings from selfed and crossed eggs to understand the genetic basis of self-sterility in the ascidian, Ciona intestinalis. First, we show that the self-sterility is strict and stable, and the individuality expressed in gametes is highly diversified in the wild population that we used. Secondly, we show one-way cross-sterility and reciprocal cross-sterility within the siblings that are self-sterile but fertile with non-siblings. Thirdly, we show self-sterility and cross-sterility share some natures and both are closely related to the sperm capacity not to bind to the vitelline coat of the autologous eggs or the eggs sterile to the sperm concerned. In all, this paper shows that the self-sterility is genetically governed by a multiple-locus system, and that most probably individual-specific determinants are haploid expression in sperm and diploid expression in eggs, given they recognize self but not non-self.
影响因子：
--
作者：
Vacquier,VD
通讯作者：
Vacquier,VD