Altitudinal genetic diversity and differentiation of Quercus crispula in the Chichibu Mountains, central Japan
Altitudinal genetic diversity and differentiation of Quercus crispula in the Chichibu Mountains, central Japan
复制标题
DOI：
10.1086/510413
复制
发表时间：
2007-03-01
影响因子：
2.3
通讯作者：
Ide, Y.
中科院分区：
文献类型：
--
作者：
Ohsawa, T.;Tsuda, Y.;Ide, Y.
为了阐明山地皱皮栎的三维遗传结构，利用7个微卫星标记，对日本中部秩父山及其周边海拔850 ~ 1750 m的19个居群内和居群间的遗传变异水平和分布进行了评价。与中等海拔（1000-1500 m）的种群相比，低海拔（= 1500 m）种群的期望杂合度和等位基因丰富度均显著降低。这些结果表明，较低和较高的人口有相对较少的多样性，因为他们是外围人口，生长在环境（中温带和亚寒带森林，分别），接近该物种的环境限制。此外，其他因素，如历史迁移，也可能是造成低海拔地区种群多样性弱的部分原因（
In order to elucidate the three-dimensional genetic structure of Quercus crispula in mountainous regions, the level and distribution of genetic variation were evaluated within and among 19 populations at altitudes ranging from 850 to 1750 m in and around the Chichibu Mountains, central Japan, using seven microsatellite markers. Compared with populations at intermediate altitudes (1000-1500 m), both the expected heterozygosity and allelic richness were significantly weaker for the populations at the lower (= 1500 m) altitudes. These results suggest that the lower and higher populations have relatively little diversity because they are peripheral populations, growing in environments (midtemperate and subfrigid forests, respectively) that are close to the environmental limits of the species. In addition, other factors, such as historical movements, may also be partially responsible for the weak diversity in the populations at the lower (