Nutrient dominance governs the assembly of microbial communities in mixed nutrient environments.
Nutrient dominance governs the assembly of microbial communities in mixed nutrient environments.
复制标题
DOI：
10.7554/elife.65948
复制
发表时间：
2021-04-20
期刊：
影响因子：
7.7
通讯作者：
Sanchez A
中科院分区：
文献类型：
--
作者：
Estrela S;Sanchez-Gorostiaga A;Vila JC;Sanchez A
微生物群落生态学中的一个主要问题是我们是否可以预测饮食的组成如何共同决定微生物群落的分类组成。受这一挑战的激励，我们研究了是否可以从每一种营养素中组装的营养素对中组装的社区进行预测。我们发现，虽然空，自然添加剂模型一般预测家庭层面的社区组成，存在系统偏差的添加剂预测，反映了一般模式的营养优势在家庭层面。一对相似度更高的营养素（如两种糖）比一对不同的营养素（一种糖一种有机酸）平均更具有相加性。此外，糖-酸群落通常更类似于糖而不是酸群落，这可以通过家庭一级的营养益处不对称来解释。总的来说，我们的研究结果表明，了解营养物质如何相互作用可能有助于预测社区对饮食变化的反应。
A major open question in microbial community ecology is whether we can predict how the components of a diet collectively determine the taxonomic composition of microbial communities. Motivated by this challenge, we investigate whether communities assembled in pairs of nutrients can be predicted from those assembled in every single nutrient alone. We find that although the null, naturally additive model generally predicts well the family-level community composition, there exist systematic deviations from the additive predictions that reflect generic patterns of nutrient dominance at the family level. Pairs of more-similar nutrients (e.g. two sugars) are on average more additive than pairs of more dissimilar nutrients (one sugar–one organic acid). Furthermore, sugar–acid communities are generally more similar to the sugar than the acid community, which may be explained by family-level asymmetries in nutrient benefits. Overall, our results suggest that regularities in how nutrients interact may help predict community responses to dietary changes.