期刊
JOURNAL OF HEREDITY
卷 112, 期 7, 页码 663-670出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/jhered/esab053
关键词
adaptation; ancient introgression; hybridization; Mediterranean climate; Quercus
资金
- National Science Foundation PGRP grant [IOS-1444661]
Through genotyping by sequencing data and population genetic inference framework, this study revealed the gene flow scenarios between California scrub oak and Engelmann oak, suggesting the potential gene flow and its association with climate change.
Ancient introgression can be an important source of genetic variation that shapes the evolution and diversification of many taxa. Here, we estimate the timing, direction, and extent of gene flow between two distantly related oak species in the same section (Quercus sect. Quercus).We estimated these demographic events using genotyping by sequencing data, which generated 25 702 single nucleotide polymorphisms for 24 individuals of California scrub oak (Quercus berberidifolia) and 23 individuals of Engelmann oak (Quercus engelmannii). We tested several scenarios involving gene flow between these species using the diffusion approximation-based population genetic inference framework and model-testing approach of the Python package DaDi. We found that the most likely demographic scenario includes a bottleneck in Q. engelmannii that coincides with asymmetric gene flow from Q. berberidifolia into Q. engelmannii. Given that the timing of this gene flow coincides with the advent of a Mediterranean-type climate in the California Floristic Province, we propose that changing precipitation patterns and seasonality may have favored the introgression of climate-associated genes from the endemic into the non-endemic California oak.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据