Abstract Detail

Population Genetics/Genomics

Tiamiyu, Bashir Bolaji [1], Zhang, Xu [2], Jose, Cerca [3], Zhang, Huajie [4], Wang, Hengchang [5], Deng, Tao [6].

Population genomics, Demographic history and Spatial Drivers of Genetic Structure in Sino-Japanese Populations of Meehania montis-koyae (Lamiaceae) using ddRAD-Seq data.

Assessing genetic variation is vital to understanding a species' demographic history and adaptation to survive in a heterogeneous environment in response to future changes. Meehania montis-koyae Ohwi (Lamiaceae) is a species that exhibits a disjunct distribution between China and Japan (Sino-Japanese regions of East Asia). It is a diploid, perennial, forest-understory herb. One would expect that the Chinese and Japanese populations would have diverged into different species after the LGM. However, little is known about their demographic history and adaptive potentials due to their disjunct distribution. Here, by employing double digest restriction site-association DNA sequencing (ddRAD-Seq) on the populations of M. montis-koyae from five Chinese and two Japanese localities, we investigated the genetic structure, and demographic history, species delimitation using (BFD) in SNAPP. Finally, to reveal the drivers of genetic structure, we searched for associations between gene and spatial and climatic variables (Genotype-environment Association (GEA)). From a practical perspective, such investigation can inform biodiversity management strategies. Based on our analyses of a large SNP data set, we identified intraspecific admixture in both populations. Our Bayes Factor Delimitation (BFD) analysis supports the current classification of M. montis-koyae as a single species. We also proved that climate and demographic history have influenced the genetic structure and population divergence in M. montis-koyae. We found evidence and signals of local adaptation driven by temperature, especially concerning the population history. Our results contribute to understanding the potential response of M. montis-koyae to climatic changes and local adaptation. Our findings provide new insights into the conservation and management of M. montis-koyae.

1 - University Chinese Academy Of Sciences, Wuhan Botanical Garden, Chinese Academy Of Sciences, Moshan, Wuchang, Wuhan, P.R.China., Wuhan, 42, 430074, China
2 - Wuhan Botanical Garden, Chinese Academy Of Sciences, Jiufeng First Road, Wuhan, 42, 430074, China
3 - Norwegian University of Science and Technology, Trondheim, Norway., Department of Natural History, NTNU University Museum, Erling Skakkes gt 47b, Trondheim, Trondheim, 7491 , Norway
4 - Wuhan Botanical Garden, Chinese Academy of Sciences, Optical Valley Park Address: East Lake New Technology Development Zone Jiufeng all the way to No. 201, Wuhan, Hubei, 430074, China
5 - Guang-gu 7th Rd X Jiu-feng 1st Rd., New Wuhan Botanical Garden, CAS, Wuhan, 42, 430070, China
6 - Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Heilongtan, Kunming 650201, Kunming, Yunnan, 650201, China

Keywords:
climate change
Genotype-environment association analysis
Local adaptation
Meehania montis-koyae
ddradseq.

Presentation Type: Oral Paper
Number:
Abstract ID:278
Candidate for Awards:Margaret Menzel Award