Asymmetric mating behavior of isogamous budding yeast.
Asymmetric mating behavior of isogamous budding yeast.
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DOI：
10.1126/sciadv.abf8404
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发表时间：
2021-06
期刊：
影响因子：
13.6
通讯作者：
Sourjik V
中科院分区：
文献类型：
--
作者：
Anders A;Colin R;Banderas A;Sourjik V
配子交配行为的差异可以出现在同配生殖微生物中，这仅仅是由于信号的不对称性。异配生殖，即小的雄性配子和大的雌性配子之间的大小差异，被认为能够选择性别间的两性异形和行为差异。然而，即使是同花受精的物种也会在交配类型之间表现出分子不对称性，这是已知的，以确保它们的自交不亲和性。在这里，我们表明，不同的性质的信息素分泌的MATa和MATα交配型的芽殖酵母导致其行为反应的不对称性在交配过程中的混合单倍体种群，这类似于在异花受精生物的配子之间的行为不对称性。MAT α表现为随机的神经元，与群体中MATα伴侣细胞的比例成比例地受到刺激，而MATα表现为短距离定向距离传感器。数学模型表明，观察到的不对称反应可以提高交配效率，从而可能提供一个选择性的优势。我们的研究结果表明，不对称交配行为的出现并不需要异配型为基础的性选择。
Differences in mating behavior of gametes can emerge in an isogamous microorganism solely due to asymmetries in signaling. Anisogamy, the size difference between small male and large female gametes, is known to enable selection for sexual dimorphism and behavioral differences between sexes. Nevertheless, even isogamous species exhibit molecular asymmetries between mating types, which are known to ensure their self-incompatibility. Here, we show that different properties of the pheromones secreted by the MATa and MATα mating types of budding yeast lead to asymmetry in their behavioral responses during mating in mixed haploid populations, which resemble behavioral asymmetries between gametes in anisogamous organisms. MATa behaves as a random searcher that is stimulated in proportion to the fraction of MATα partner cells within the population, whereas MATα behaves as a short-range directional distance sensor. Mathematical modeling suggests that the observed asymmetric responses can enhance efficiency of mating and might thus provide a selective advantage. Our results demonstrate that the emergence of asymmetric mating behavior did not require anisogamy-based sexual selection.
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影响因子：
3.7
作者：
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通讯作者：
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影响因子：
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作者：
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作者：
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通讯作者：
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DOI：
10.1016/j.cub.2011.06.054
发表时间：
2011-08-23
期刊：
Current biology : CB
影响因子：
--
作者：
Gonçalves-Sá J;Murray A
通讯作者：
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