Fine‐scale spatial ecology drives kin selection relatedness among cooperating amoebae
Fine‐scale spatial ecology drives kin selection relatedness among cooperating amoebae
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精细尺度空间生态学驱动合作变形虫之间的亲缘选择相关性
DOI：
10.1111/evo.12895
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发表时间：
2016
期刊：
影响因子：
3.3
通讯作者：
D. Queller
中科院分区：
文献类型：
--
作者：
jeff smith;J. Strassmann;D. Queller
微生物之间的合作对于抗生素抗性、病原体毒力和孢子形成等多种性状都很重要。合作对抗“作弊者”突变体的进化稳定性关键取决于微生物与遗传相似个体相互作用的程度。然而，在自然微生物系统中这种遗传社会结构的原因尚不清楚。在这里，我们表明，社会结构之间的合作Dictyosteelium amoeelium是由人口生态的殖民化，增长和扩散作用在空间尺度小到子实体本身。尽管变形虫在放牧时会分散，但在多细胞子实体中产生大量遗传克隆所需的一切只是在摄食部位定居的细胞之间的几毫米距离。即使相邻的子实体也可以由不同的基因型组成。土壤变形虫种群稀疏，在毫米尺度上呈斑块状分布。因此，细胞和基因型的精细尺度空间结构可以解释来自天然基质的子实体中孢子的高度遗传均匀性。这些结果表明，要充分理解微生物的合作，就需要了解微生物自身所经历的小空间尺度上的生态学和社会结构。
Cooperation among microbes is important for traits as diverse as antibiotic resistance, pathogen virulence, and sporulation. The evolutionary stability of cooperation against “cheater” mutants depends critically on the extent to which microbes interact with genetically similar individuals. The causes of this genetic social structure in natural microbial systems, however, are unknown. Here, we show that social structure among cooperative Dictyostelium amoebae is driven by the population ecology of colonization, growth, and dispersal acting at spatial scales as small as fruiting bodies themselves. Despite the fact that amoebae disperse while grazing, all it takes to create substantial genetic clonality within multicellular fruiting bodies is a few millimeters distance between the cells colonizing a feeding site. Even adjacent fruiting bodies can consist of different genotypes. Soil populations of amoebae are sparse and patchily distributed at millimeter scales. The fine‐scale spatial structure of cells and genotypes can thus account for the otherwise unexplained high genetic uniformity of spores in fruiting bodies from natural substrates. These results show how a full understanding of microbial cooperation requires understanding ecology and social structure at the small spatial scales microbes themselves experience.
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影响因子：
64.8
作者：
MacLean, RC;Gudelj, I
通讯作者：
Gudelj, I
影响因子：
2.7
作者：
Loomis, William F.
通讯作者：
Loomis, William F.
影响因子：
16.8
作者：
Platt TG;Bever JD
通讯作者：
Bever JD
缺乏F-box蛋白的盘基网柄菌阿米巴形成孢子，而不是野生型嵌合体中的茎。
DOI：
10.1073/pnas.97.7.3292
发表时间：
2000
影响因子：
11.1
作者：
Ennis,HL;Dao,DN;Pukatzki,SU;Kessin,RH
通讯作者：
Kessin,RH