Popis: |
One of the species with high genetic diversity is coconut (Cocos nucifera). Coconut is one of the most economically important trees of the family Arecaceae. There are three main types of coconuts: tall coconut, dwarf coconut, and hybrid coconut. However, several coconut varieties’ genetic information is still limited, such as a unique coconut called kopyor coconut. This unique coconut, locally known in Indonesia, has curd, fluffy, and crumbly endosperm because of natural mutation. This research encompasses the characteristics of coconut cv. Kopyor Green Dwarf chloroplast genome and comparative genomics between other palm species. Based on sequence analyses, the chloroplast genome is 158,462 bp in length and has a typical quadripartite structure composed of a large single copy (LSC; 86,198 bp), a small single copy (SSC; 17,712 bp), and two identical inverted repeats (IR; 27,276 bp). The genome consisted of 116 genes. Comparative analysis showed that the coding regions are more conserved than noncoding regions. Compared to other published coconut sequences, kopyor coconut has a larger sequence because of much more gene duplication. The phylogenetic analysis showed that the coconut has a closed relationship with the Phoenix dactylifera. These genome characterizations could provide information to develop gene-specific markers, chloroplast genome mapping, plant breeding program, evolutionary study, and kopyor coconut conservation. |