Phylogenetic Analysis of the Dipterocarpaceae Family in the Peatland Vegetation of Danau Sentarum National Park Using In Silico Approaches Based on MatK Sequences

Abstract

Indonesia has the largest tropical peatlands in the world. Peatlands have a high diversity of tree species, many of which are endemic and not found in other forest types. On the other hand, peatlands are under pressure from human activities. The dominant family in the peat vegetation of Danau Sentarum National Park is Dipterocarpaceae, which has good quality and high economic value. The study aims to analyze the phylogenetics of Dipterocarpaceae family tree species in silico in order to understand the kinship relationships among tree species of the Dipterocarpaceae family that dominate in the area. This phylogenetic analysis can help in efforts to conserve genetic diversity and restore peatlands. The study used secondary data in the form of matK gene sequences in silico. The results of phylogeny tree construction consist of in group and out group. The in-group consists of 17 tree species forming 11 clades, while the out-group consists of a single species, Bretschneidera sinensis. Based on branch positions and bootstrap values, the closest relationship within the in-group is found in the lime tree species, which is grouped in clade 4.