10.3389/fevo.2019.00170.s001
Na-Na Xu
Na-Na
Xu
Kai Jiang
Kai
Jiang
Shekhar R. Biswas
Shekhar R.
Biswas
Xin Tong
Xin
Tong
Rong Wang
Rong
Wang
Xiao-Yong Chen
Xiao-Yong
Chen
Table_1_Clone Configuration and Spatial Genetic Structure of Two Halophila ovalis Populations With Contrasting Internode Lengths.DOCX
Frontiers
2019
clonal growth
Halophila ovalis
spatial genetic structure
internode length
microsatellites
2019-05-14 08:52:43
Dataset
https://frontiersin.figshare.com/articles/dataset/Table_1_Clone_Configuration_and_Spatial_Genetic_Structure_of_Two_Halophila_ovalis_Populations_With_Contrasting_Internode_Lengths_DOCX/8123975
<p>Fine-scale spatial genetic structure (SGS) is predominantly determined by gene flow. While sexually reproducing plants can disperse their genes through pollen and seed grains, clonal plants can additionally disperse genes through clonal growth. Plants' clonal reproduction strategy, however, often varies within and between species. Still, the effect of differential clonal reproduction strategy on fine-scale SGS remains somewhat unclear. Halophila ovalis is a fast-growing clonal seagrass, whose internode length (which defines a species' clonal reproduction strategy) varies among populations. Using eight polymorphic microsatellites, here we compare the genetic diversity, clonal structure and fine-scale SGS of two H. ovalis populations with contrasting internode lengths (Yingluo vs. Xialongwei populations). We found moderate to high genotypic and allelic richness and heterozygosities in both populations. Compared to Xialongwei population, genetic and genotypic diversity was significantly lower in Yingluo population. Although their internode length was relatively short, clones of Yingluo population spread farther than those of Xialongwei population. Sexual-to-vegetative dispersal variance ratios were 34.6 and 445.5 in Yingluo and Xialongwei populations, respectively. In both populations, clonal growth significantly intensified the SGS, especially in short distance classes. The SGS at small distance classes were weaker in Yingluo than Xialongwei, in part, due to more intermingled distribution of genets and more extensive clonal expansion in the former population. Our results indicate that vegetative dispersal variance/distance, rather than internode length, plays a crucial role in shaping the fine-scale genetic structure.</p>