Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA.
Trends Ecol Evol. 2021 Jun;36(6):488-497. doi: 10.1016/j.tree.2021.02.010. Epub 2021 Mar 19.
Gene exchange between species can influence ecological and evolutionary processes ranging from population rescue to adaptive radiation. Genomic tools have provided new insights into the prevalence and nature of gene exchange between species. However, much remains unknown of how ecological, behavioral, and evolutionary factors determine what genetic variation moves between species in the first place. In particular, more research is needed that evaluates whether such factors bias gene flow from one species to another, and whether any such biases affect how genetic variation from another species is ultimately retained in the genome of a given species. Addressing this issue is crucial in a changing world where hybridization and introgression might determine which species succeed and which become extinct.
物种间的基因交换可以影响从种群拯救到适应性辐射等生态和进化过程。基因组工具为研究物种间基因交换的普遍性和本质提供了新的视角。然而，生态、行为和进化因素如何决定最初有哪些遗传变异在物种间转移，这方面仍有许多未知。特别是，需要更多的研究来评估这些因素是否会影响基因从一个物种流向另一个物种，以及任何这种偏差是否会影响另一个物种的遗传变异最终在给定物种的基因组中保留下来。在一个杂交和基因渐渗可能决定哪些物种成功、哪些物种灭绝的变化世界中，解决这个问题至关重要。
