Comparative phylogeography of two related plant species with overlapping ranges in Europe, and the potential effects of climate change on their intraspecific genetic diversity.
Comparative phylogeography of two related plant species with overlapping ranges in Europe, and the potential effects of climate change on their intraspecific genetic diversity.
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DOI：
10.1186/1471-2148-11-29
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发表时间：
2011-01-27
影响因子：
3.4
通讯作者：
Provan J
中科院分区：
文献类型：
--
作者：
Beatty GE;Provan J
本研究的目的是使用系统地理和物种分布相结合的模拟方法来比较两种分布重叠的植物的冰川历史，这两种植物是单侧冬青的Orthilia secunda和黄色的燕窝Monotroa lowopitys。进行了系统地理分析，以确定遗传变异在每个物种范围内的分布，并测试两者是否都符合南方高多样性的“经典”模式，即较高纬度的多样性减少，或者适应寒冷的O.Secunda是否可能在北方种群中保留更多的遗传变异。此外，还建立了基于未来气候情景的预测物种分布模型，以评估物种范围的变化在这两种情况下对种内总多样性的影响。利用多种遗传标记(叶绿体trns-trnG区、核ITS区和微卫星；叶绿体rps2、核ITS区和多个微卫星)进行的古分布模拟和系统地理分析表明，这两个物种在南方避难所的末次冰盛期持续了整个冰期。对于这两个物种，大部分的遗传多样性集中在这些南方种群中，而那些在重新殖民区的种群通常表现出较低的多样性水平，特别是在小黄杨种群中。根据预测的未来气候建立的物种分布模型表明，这两个物种的活动范围发生了很大变化，南部和中部种群减少，温带低山毛藻可能向北扩张。在欧洲南部避难所的LGM期间，Orthilia Secunda和Monotroa lowopitys似乎都坚持了下来。然而，北方的O.Secunda在这些避难区以外的更北方的种群中保留了比温带M.lowopitys更大比例的遗传多样性。鉴于未来的物种分布模型表明，物种当前分布的北部范围转移和南部适当栖息地的丧失，遗传多样性的后缘种群的灭绝可能会对两个物种的范围内种内多样性产生重大影响，特别是在短毛金枪鱼中。
The aim of the present study was to use a combined phylogeographic and species distribution modelling approach to compare the glacial histories of two plant species with overlapping distributions, Orthilia secunda (one-sided wintergreen) and Monotropa hypopitys (yellow bird's nest). Phylogeographic analysis was carried out to determine the distribution of genetic variation across the range of each species and to test whether both correspond to the "classic" model of high diversity in the south, with decreasing diversity at higher latitudes, or whether the cold-adapted O. secunda might retain more genetic variation in northern populations. In addition, projected species distributions based on a future climate scenario were modelled to assess how changes in the species ranges might impact on total intraspecific diversity in both cases. Palaeodistribution modelling and phylogeographic analysis using multiple genetic markers (chloroplast trnS-trnG region, nuclear ITS and microsatellites for O. secunda; chloroplast rps2, nuclear ITS and microsatellites for M. hypopitys) indicated that both species persisted throughout the Last Glacial Maximum in southern refugia. For both species, the majority of the genetic diversity was concentrated in these southerly populations, whereas those in recolonized areas generally exhibited lower levels of diversity, particularly in M. hypopitys. Species distribution modelling based on projected future climate indicated substantial changes in the ranges of both species, with a loss of southern and central populations, and a potential northward expansion for the temperate M. hypopitys. Both Orthilia secunda and Monotropa hypopitys appear to have persisted through the LGM in Europe in southern refugia. The boreal O. secunda, however, has retained a larger proportion of its genetic diversity in more northerly populations outside these refugial areas than the temperate M. hypopitys. Given that future species distribution modelling suggests northern range shifts and loss of suitable habitat in the southern parts of the species' current distributions, extinction of genetically diverse rear edge populations could have a significant effect in the rangewide intraspecific diversity of both species, but particularly in M. hypopitys.
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DOI：
10.1111/j.1095-8312.1999.tb01160.x
发表时间：
1999-09-01
影响因子：
1.9
作者：
Hewitt, GM
通讯作者：
Hewitt, GM
影响因子：
4.9
作者：
Clement, M;Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
4.9
作者：
Bidartondo, MI;Bruns, TD
通讯作者：
Bruns, TD
影响因子：
2.6
作者：
Excoffier, Laurent;Laval, Guillaume;Schneider, Stefan
通讯作者：
Schneider, Stefan
DOI：
10.1002/joc.1276
发表时间：
2005-12-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Hijmans, RJ;Cameron, SE;Jarvis, A
通讯作者：
Jarvis, A