Prezygotic reproductive isolation between Saccharomyces cerevisiae and Saccharomyces paradoxus.
Prezygotic reproductive isolation between Saccharomyces cerevisiae and Saccharomyces paradoxus.
复制标题
酿酒酵母和sacCharomyces paradoxus之间的前卵巢生殖隔离。
DOI：
10.1186/1471-2148-8-1
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发表时间：
2008-01-07
影响因子：
3.4
通讯作者：
Greig, Duncan
中科院分区：
文献类型：
--
作者：
Maclean, Calum J.;Greig, Duncan
不同的严格意义上的酵母菌物种之间的交配产生性不育的杂交种，所以个人应该避免与其他物种交配。任何降低种间交配频率的机制都将赋予选择优势。在这里，我们测试的能力，两个密切相关的严格意义上的酵母菌种选择自己的物种作为配偶，避免杂交。我们建立了配偶选择测试，使用五个独立的隔离对的物种，其中个别发芽孢子提出了与自己的物种的发芽孢子或与其他物种的发芽孢子交配的机会。对于所有五个菌株对，无论是S.酿酒酵母或S.尽管矛盾体占据了“杂交者”品系的角色，但在两个物种之间观察到的杂交水平显著低于如果随机选择配偶所预期的水平。我们还表明，总的来说，S。酿酒酵母比S.矛盾的。合子前生殖隔离在高等生物中是众所周知的，但在重要的模式微生物酵母中却在很大程度上被忽视了。在这里，我们提出了第一个报告的前合子生殖隔离酵母。前合子生殖隔离可能是重要的酵母物种形成或酵母物种的凝聚力，并可能已演变为防止浪费交配不同物种之间。虽然酵母长期以来一直被用作遗传模型系统，但对野生酵母知之甚少。我们的工作揭示了酵母自然行为的一个有趣的方面：它们避免昂贵的种间交配的能力。
Matings between different Saccharomyces sensu stricto yeast species produce sexually sterile hybrids, so individuals should avoid mating with other species. Any mechanism that reduces the frequency of interspecific matings will confer a selective advantage. Here we test the ability of two closely-related Saccharomyces sensu stricto species to select their own species as mates and avoid hybridisation. We set up mate choice tests, using five independently isolated pairs of species, in which individual germinating spores were presented with the opportunity to mate either with a germinating spore of their own species or with a germinating spore of the other species. For all five strain pairs, whether a S. cerevisiae or S. paradoxus occupies the role of "chooser" strain, the level of hybridisation that is observed between the two species is significantly lower than would be expected if mates were selected at random. We also show that, overall, S. cerevisiae exhibited a stronger own-species preference than S. paradoxus. Prezygotic reproductive isolation is well known in higher organisms but has been largely overlooked in yeast, an important model microbe. Here we present the first report of prezygotic reproductive isolation in Saccharomyces. Prezygotic reproductive isolation may be important in yeast speciation or yeast species cohesion, and may have evolved to prevent wasted matings between different species. Whilst yeast has long been used as a genetic model system, little is known about yeast in the wild. Our work sheds light on an interesting aspect of yeast natural behaviour: their ability to avoid costly interspecific matings.
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影响因子：
2.6
作者：
Liti, G;Peruffo, A;Louis, EJ
通讯作者：
Louis, EJ
影响因子：
2.8
作者：
Naumov, GI;Naumova, ES;Sniegowski, PD
通讯作者：
Sniegowski, PD
DOI：
10.1099/00207713-50-5-1931
发表时间：
2000-09-01
影响因子：
2.8
作者：
Naumov, GI;James, SA;Roberts, IN
通讯作者：
Roberts, IN
影响因子：
3.3
作者：
Coyne, JA;Orr, HA
通讯作者：
Orr, HA
影响因子：
64.5
作者：
JACKSON, CL;HARTWELL, LH
通讯作者：
HARTWELL, LH