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Abstract Detail


Molecular Ecology and Evolution

Li, Xinnian [1], Renchao, Zhou [1], Suhua, Shi [1].

Population genetic variation of a mangrove species Avicennia marina in Hainan Island revealed by high-throughput sequencing.

Mangroves are woody trees or shrubs inhabiting coastal intertidal zonein tropical and subtropical regions. They adapt to their specific habitats with special properties such as vivipary, salt secretion and aerial roots. Previous studies reported low level of polymorphisms and strong population structure in many mangroves. The advent of next generation sequencing technologies makes population genomics studies feasible in non-model organisms like mangroves. In this study, we used Illumina platform to sequence 91 genes in two natural populations (Wenchang and Sanya) of Avicennia marina, a mangrove species. 100 individuals were pooled for each population and our results showed that no single nucleotide polymorphisms (SNPs) were detected in 64 genes for both populations, while 67 SNPs were distributed in the remaining 27 genes. Strong genetic differentiation (Fst>0.25) was revealed between the two populations in 3 genes. By using computer simulation, the pattern observed in this species could not be explained by sole demorgraphic factors and we suggested that some genes might experience divergent selection in the two populations of A. marina in Hainan Island.

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1 - Sun Yat-sen University, Life Science School, Guangzhou, Guangdong, P.R.China

Keywords:
Avicennia marina
High-thoughput Sequencing
genetic variation
genetic structure
SNP.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM
Number: PME005
Abstract ID:373


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