无论是否存在相互作用的物种,微生物微生态系统中的进化都是高度平行的。

Nittay Meroz, Tal Livny, Gal Toledano, Yael Sorokin, Nesli Tovi, Jonathan Friedman
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引用次数: 0

摘要

在重复种群中,进化往往遵循相似的轨迹,这表明进化可能是可预测的。然而,种群是自然嵌入在多物种群落中的,进化在多大程度上取决于与焦点种群相互作用的特定物种,这一点在很大程度上仍未得到探讨。在这里,我们研究了 11 个不同物种菌株的适应性,这些菌株是在隔离和各种成对共培养的情况下实验进化而来的。虽然可以检测到伙伴的特异性效应,但与不同伙伴共同进化的菌株之间的进化大多是共享的;菌株的生长能力、群落特性以及大约一半的重复突变基因都发生了类似的变化。这种模式甚至在预先适应非生物条件的物种中也持续存在。这些研究结果表明,进化可能并不总是强烈依赖于生物环境,这使得有关共同进化动态的预测变得不像以前认为的那样具有挑战性。补充信息中包含了本文透明的同行评审过程记录。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evolution in microbial microcosms is highly parallel, regardless of the presence of interacting species.

Evolution often follows similar trajectories in replicate populations, suggesting that it may be predictable. However, populations are naturally embedded in multispecies communities, and the extent to which evolution is contingent on the specific species interacting with the focal population is still largely unexplored. Here, we study adaptations in strains of 11 different species, experimentally evolved both in isolation and in various pairwise co-cultures. Although partner-specific effects are detectable, evolution was mostly shared between strains evolved with different partners; similar changes occurred in strains' growth abilities, in community properties, and in about half of the repeatedly mutated genes. This pattern persisted even in species pre-adapted to the abiotic conditions. These findings indicate that evolution may not always depend strongly on the biotic environment, making predictions regarding coevolutionary dynamics less challenging than previously thought. A record of this paper's transparent peer review process is included in the supplemental information.

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