Composition and similarity of bovine rumen microbiota across individual animals.
Composition and similarity of bovine rumen microbiota across individual animals.
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DOI：
10.1371/journal.pone.0033306
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Mizrahi I
中科院分区：
文献类型：
--
作者：
Jami E;Mizrahi I
牛瘤胃内有一个复杂的微生物群，这是牛将不可消化的植物物质转化为食物产品的显着能力的原因。尽管这种生态系统对人类具有巨大的意义，但不同动物之间细菌群落的组成和相似性以及所有动物瘤胃中可能存在的一些细菌类群尚未确定。我们的特点是瘤胃细菌种群的16个泌乳奶牛使用标签扩增焦磷酸测序。当使用Bray-Curtis指标分析丰度和发生率时，我们的数据显示样本中细菌分类群的相似性为51%。通过使用加权UniFrac度量将分类群系统学添加到分析中，相似性增加到82%。我们还计算了所有样本共有的32个属，这些属在样本之间的丰度表现出高度的变异性。综上所述，我们的结果表明牛瘤胃中存在核心微生物组。此外，虽然细菌分类群可能会有很大的不同，牛瘤胃，他们似乎是遗传相关。这表明，瘤胃生态位的功能要求选择类群，可能具有相似的遗传特征。
The bovine rumen houses a complex microbiota which is responsible for cattle's remarkable ability to convert indigestible plant mass into food products. Despite this ecosystem's enormous significance for humans, the composition and similarity of bacterial communities across different animals and the possible presence of some bacterial taxa in all animals' rumens have yet to be determined. We characterized the rumen bacterial populations of 16 individual lactating cows using tag amplicon pyrosequencing. Our data showed 51% similarity in bacterial taxa across samples when abundance and occurrence were analyzed using the Bray-Curtis metric. By adding taxon phylogeny to the analysis using a weighted UniFrac metric, the similarity increased to 82%. We also counted 32 genera that are shared by all samples, exhibiting high variability in abundance across samples. Taken together, our results suggest a core microbiome in the bovine rumen. Furthermore, although the bacterial taxa may vary considerably between cow rumens, they appear to be phylogenetically related. This suggests that the functional requirement imposed by the rumen ecological niche selects taxa that potentially share similar genetic features.
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