10.5061/DRYAD.70RXWDBTW
Zhu, Shanshan
0000-0003-1582-1007
Zhejiang University
Comes, Hans-Peter
,
Tamaki, Ichiro
,
Cao, Ya-nan
,
Sakaguchi, Shota
,
Yap, Zhao-yan
,
Ding, Yan-qian
,
Qiu, Ying-Xiong
,
Data from: Patterns of genotype variation and demographic history in
Lindera glauca (Lauraceae), an apomict-containing dioecious forest tree
Dryad
dataset
2020
Microsatellite data of 19 nSSR loci from all 617 Lindera glauca samples
the Maxent results
Apomixis
Multilocus genotypes
State Key Basic Research and Development Plan of China**
2017YFA0605104
National Natural Science Foundation of China
https://ror.org/01h0zpd94
31872652
National Natural Science Foundation of China
https://ror.org/01h0zpd94
31570214
National Natural Science Foundation of China
https://ror.org/01h0zpd94
31561143015
State Key Basic Research and Development Plan of China*
2017YFA0605104
2021-04-23T00:00:00Z
2021-04-23T00:00:00Z
en
8096175 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Aim: The historical circumstances promoting the transition from sexual to
apomictic reproduction in dioecious plant species remains poorly
understood. Here, we investigated the divergence and demographic history
of Lindera glauca, a dioecious tree considered to be facultatively
apomictic in China while comprising only females (obligate apomicts) in
Japan. Location: East Asia (China and Japan) Methods: Samples from 42
populations were genotyped using chloroplast DNA and nuclear
microsatellite (nSSR) loci to assess genetic diversity and structure. The
nSSR genotypes were also used to detect the mode of reproduction in
Chinese and Japanese populations, respectively. Approximate Bayesian
Computation on nSSRs and palaeoclimatic niche models provided further
insights into the evolutionary and population demographic history.
Results: Chinese L. glauca was found to harbour both sexual and asexual
genotypes. Chinese and Japanese L. glauca underwent roughly
contemporaneous bottlenecks during a mid-Pleistocene glacial period,
possibly marking the split-time of the island lineage from its mainland
ancestor. In contrast to Chinese L. glauca, the Japanese lineage
experienced a massive range contraction during the Last Glacial Maximum
and postglacial expansions. Main conclusions: While reproductive assurance
plays an important role in the selection of apomixis in Chinese L. glauca,
the lack of male plants in Japan likely reflects population demographic
history driven by (Late) Quaternary climate change. Hence, the present
study demonstrates a possible link between palaeoclimate change and the
transition to exclusively apomictic reproduction in a dioecious tree.
All 617 samples were genotyped at 19 nSSR loci using primers and
amplification protocols developed specifically for Lindera glauca (Echt,
Deemer, Kubisiak, & Nelson, 2006; Edwards & Niesenbaum,
2007; Xiong et al., 2016; Zhu, Ding, Yap, & Qiu, 2016; see Table
S2). Alleles were manually scored and determined using genemarker (version
2.2.0; SoftGenetics, State College, PA, USA). We performed demographic
history analysis based on these data using ABC and also provided the R
scripts. We also provided a file of the Maxent process and the results.
The original population code has a separate form file. The microsatellite
genotype for all 617 Lindera glauca samples is included in
the abc_scripts190326.zip. The ReadMe file for R scripts is also included.