Homogenized Phylogeographic Structure across the Indo-Burma Ranges of a Large Monoecious Fig, Ficus altissima Blume

被引:7
|
作者
Huang, Jian-Feng [1 ,2 ]
Darwell, Clive T. [3 ]
Peng, Yan-Qiong [1 ,2 ]
机构
[1] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China
[2] Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Mengla 666303, Peoples R China
[3] Natl Ctr Genet Engn & Biotechnol BIOTEC, 113 Thailand Sci Pk,Pahonyothin Rd, Khlong Luang 12120, Thailand
来源
DIVERSITY-BASEL | 2021年 / 13卷 / 12期
基金
中国国家自然科学基金;
关键词
Ficus; Indo-Burma; genetic structure; human cultivation; nSSRs; RAIN-FOREST; GENETIC DIFFERENTIATION; BIOGEOGRAPHIC HISTORY; COMPUTER-PROGRAM; SEA LEVELS; POPULATION; BIODIVERSITY; SOFTWARE; MORACEAE; DIVERSITY;
D O I
10.3390/d13120654
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
As well as bountiful natural resources, the Indo-Burma biodiversity hotspot features high rates of habitat destruction and fragmentation due to increasing human activity; however, most of the Indo-Burma species are poorly studied. The exploration of plants closely associated with human activity will further assist us to understand our influence in the context of the ongoing extinction events in the Anthropocene. This study, based on widely and intensively sampled F. altissima across Indo-Burma and the adjacent south China ranges, using both the chloroplast psbA-trnH spacer and sixteen newly developed nuclear microsatellite markers (nSSRs), aims to explore its spatial genetic structure. The results indicated low chloroplast haplotype diversity and a moderate level of nuclear genetic diversity. Although limited seed flow was revealed by psbA-trnH, no discernible phylogeographic structure was shown due to the low resolution of cpDNA markers and dominance of an ancestral haplotype. From the nSSRs data set, phylogeographic structure was homogenized, most likely due to extensive pollen flow mediated by pollinating fig wasps. Additionally, human cultivation and human-mediated transplanting further confounded the analyses of population structure. No geographic barriers are evident across the large study range, with F. altissima constituting a single population, and extensive human cultivation is likely to have had beneficial consequences for protecting the genetic diversity of F. altissima.
引用
收藏
页数:18
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