4.5 Article

Hybridization in contact zone between temperate European pine species

期刊

TREE GENETICS & GENOMES
卷 12, 期 3, 页码 -

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s11295-016-1007-x

关键词

Hybridization; Molecular markers; Natural selection; Local adaptation; Speciation

资金

  1. Polish National Science Centre [2011/01/B/NZ8/01634, DEC-2012/05/E/NZ9/03476]
  2. NERC [NE/H003959/1]
  3. NERC [NE/K012177/1, NE/H003959/1] Funding Source: UKRI
  4. Natural Environment Research Council [NE/H003959/1, NE/K012177/1] Funding Source: researchfish

向作者/读者索取更多资源

Hybridization studies are important to advance our understanding of the interspecific gene flow and its evolutionary consequences in closely related species. Hybridization and admixture patterns were assessed in a contact zone and reference populations of European pine species using sequence data from 26 nuclear genes and a species-diagnostic cpDNA marker. Reference populations formed three distinct genetic clusters comprising Pinus sylvestris, Pinus mugo/Pinus uliginosa, and Pinus uncinata. Evidence of population structure was found only in P. uliginosa. Based on phenotypic characteristics and molecular data, we identified five groups of individuals in the contact zone in Poland, comprising forms of the parental species and intermediates that were most probably the result of interspecific crosses. A combination of nuclear gene sequence data and a diagnostic organelle marker were used to show that hybridization is frequent in the contact zone and results in hybrid trees with distinct phenotypic identity. The influence of selection in maintaining hybrid phenotypes in environments unsuited to parental species was inferred from nucleotide polymorphism data. A lack of admixture in reference populations suggests that hybridization has not occurred during post-glacial migration and so the contact zone represents a distinct, active example of ongoing evolution. Pine populations in this zone will be a valuable system for studying the genetic basis of hybrid advantage in environmental conditions untypical of pure parental species.

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。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据