title: [Effects of divergent habitat on genetic structure of population of Excoecaria agallocha, a mangrove associate].
abstract: Genetic diversity and population genetic structure of Excoecaria agallocha, a typical mangrove associate species,were surveyed at divergent habitats (intertidal and inland). In general, intertidal populations had higher genetic diversity than inland populations. Genetic differentiation among intertidal populations (G(ST) = 0.191) were smaller than that among inland populations (G(ST) = 0.218), suggesting that gene flow via seed among intertidal populations were stronger. In an analysis of molecular variance (AMOVA), we found that 15.13% of the genetic variance could be explained by the differentiation between habitats, as compared to only 11.63% to geographical effects among five sits 181 -759 km distant from each other. This implies that markedly selection regimes result in habitat adaptation. Isolation-by-distance, Southwest Monsoon Current,China Coastal Current and genetic drift played important role in genetic differentiation of China population of Excoecaria agalocha.
authors.affiliation: State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Zhang
authors.forename: Tian
authors.initials: T
authors.lastname: Tang
authors.forename: Ren-Chao
authors.initials: RC
authors.lastname: Zhou
authors.forename: Yu-Guo
authors.initials: YG
authors.lastname: Wang
authors.forename: Shu-Guang
authors.initials: SG
authors.lastname: Jian
authors.forename: Cai-Rong
authors.initials: CR
authors.lastname: Zhong
authors.forename: Su-Hu
authors.initials: SH
authors.lastname: Shi
mesh_terms: D019665:Euphorbiaceae / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D018745:Genome, Plant