Molecular phylogenetics of flowering plant Annonaceae using big data


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guoxing2 - Posted on 12 May 2017

Project Description: 

The Annonaceae, the largest family in the early-divergent order Magnoliales, comprises 107 genera and c. 2,400 species.The family contributes significantly to tree diversity in rain forests around the world and is one of the best examples to study the evolutionary history of tropical rain forest ecosystem. Despite significant advances in understanding molecular phylogentic relationships within this family over the past decade, the affinities of several clades remain obscure due to limited data used. In this project, we will use a super-matrix method with eight chloroplast DNA regions of about 800 species to reconstruct phylogenetic trees. In addition, this project will focus on nuclear marker development by transcriptome sequencing. The phylogenetic utility of developed markers will be evaluated and selected to design probes for targeted next generation sequencing for some poorly resolved lineages. The resultant phylogeny will provide a framework to test evolutionary hypotheses in morphological character evolution, historical biogeography, diversification rate estimation and pollination ecology.

Researcher name: 
Richard M.K. Saunders
Researcher position: 
full professor
Researcher department: 
School of Biological Sciences
Researcher email: 
Research Project Details
Project Duration: 
05/2017 to 05/2019
Project Significance: 
Molecular phylogenetics is very widely applied and of increasing importance in contemporary plant biological research. The resultant super-matrix phylogenetic framework would provide insights for future studies of Annonaceae. Previous molecular phylogenetic studies of Annonaceae are mainly based on chloroplast markers which have limited power for tree resolution. The developed nuclear markers would pave the way for nuclear phylogenetic studies. Targeted next generation sequencing is expected to provide hundreds of nuclear genes, which would have remarkable power for tree resolution and deciphering reticulate evolutionary events (hybridization and incomplete lineage sorting).