Conservation genetics of rare trees restricted to subtropical montane cloud forests in southern China: a case study from Quercus arbutifolia (Fagaceae)
Conservation genetics of rare trees restricted to subtropical montane cloud forests in southern China: a case study from Quercus arbutifolia (Fagaceae)
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中国南方亚热带山地云雾林珍稀树种的保护遗传学：以山毛榉（壳斗科）为例
DOI：
10.1007/s11295-016-1048-1
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发表时间：
2016-08
影响因子：
2.4
通讯作者：
Zheng Si-Si
中科院分区：
文献类型：
--
作者：
Deng Min;Westwood Murphy;Song Yi-Gang;Zheng Si-Si
山地云雾林（MCFs），其孤立的性质，提供了极好的机会来研究栖息地破碎化的长期影响和气候变化的影响。栎是我国南方和越南少数民族聚居区的珍稀栎属。其孤立的种群，小种群规模和独特的生态位使该物种容易受到气候变化和栖息地丧失的影响。本研究利用叶绿体（cpDNA）和核（ITS）DNA序列分析了6个已知居群中5个居群的遗传分化模式和人口统计学历史。杨梅叶。考虑到其种群规模小和分散性，Q。arbutifolia具有出乎意料的高遗传多样性。所有cpDNA单倍型的最近共同祖先的时间是c。10.25 Ma，第四纪时单倍型迅速多样化。cpDNA单倍型的最大进化支可信度年代图表明，广西大明山DM群体分化较早，迅速与其他群体分离。珠江水系可能是晚中新世以来DM与其他种群之间的主要地理屏障。ITS数据表明，人口扩张发生在第四纪末次间冰期。前第四纪和第四纪气候地质变化的共同作用是导致目前栎属遗传多样性和分布格局的主要驱动力。杨梅叶。由于居群间的遗传分化和居群内的遗传多样性较高，居群内的遗传多样性较低。arbutifolia的种群，但在保护资源有限的情况下，应优先考虑DM、YZ（湖南莽山）和ZZ（福建大秦山）种群。
Montane cloud forests (MCFs), with their isolated nature, offer excellent opportunities to study the long-term effects of habitat fragmentation and the impacts of climate change. Quercus arbutifolia is a rare oak in MCFs of southern China and Vietnam. Its isolated populations, small population size and unique ecological niche make this species vulnerable to climate change and habitat loss. In this study, we used chloroplast (cpDNA) and nuclear (ITS) DNA sequences to investigate genetic divergence patterns and demographic history of five of the six known populations of Q. arbutifolia. Considering its small population size and fragmentation, Q. arbutifolia has unexpectedly high genetic diversity. The time since the most recent common ancestor of all cpDNA haplotypes was c. 10.25 Ma, and the rapid diversification of haplotypes occurred during the Quaternary. The maximum clade credibility chronogram of cpDNA haplotypes suggests that the DM population (Daming Mountain, Guangxi province) diverged early and rapidly became isolated from other populations. The Pearl River drainage system may have been the main geographic barrier between DM and other populations since the late Miocene. ITS data suggests that population expansion occurred during the last interglacial of the Quaternary. The combined effects of pre-Quaternary and Quaternary climatic and geological changes were the main drivers to the current genetic diversity and distribution pattern of Q. arbutifolia. Because of the high between-population genetic differentiation and high within-population genetic diversity of Q. arbutifolia, conservation efforts should be implemented for all populations, but if conservation resources are limited, populations DM, YZ (Mang Mountain, Hunan province) and ZZ (Daqin Mountain, Fujian province) should have priority.
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基于植物化石定量重建中国南方中新世气候格局及演化
DOI：
10.1016/j.palaeo.2010.04.012
发表时间：
2011-05
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Cheng-Sen Li;Volker Mosbrugger;Yi-Feng Yao;Angela A. Bruch
通讯作者：
Angela A. Bruch
影响因子：
1.5
作者：
L. Lim
通讯作者：
L. Lim
影响因子：
5.8
作者：
Posada, D;Crandall, KA
通讯作者：
Crandall, KA
DOI：
10.1644/09-mamm-a-177.1
发表时间：
2010-04
期刊：
--
影响因子：
--
作者：
A. Ojeda
通讯作者：
A. Ojeda
影响因子：
--
作者：
R. C. Durán;M. García
通讯作者：
R. C. Durán;M. García