- Coconut organelle genome-mitochondrial
- Coconut organelle genome-chloroplast
Coconut, a member of the palm family, is one of the most economically important crops in tropics as a source of food, drink, fuel, medicines and construction material. Based on next-generation sequencing data, we assembled the mitochondrial genome of coconut (Oman local tall cultivar) into a molecule of 678,653bp in length with 45.5% GC content. The mt genome of C. nucifera encodes 68 proteins (86 genes), 10 pseudo genes (11 genes), 23 tRNAs (17 amino acid codon and 1 stop codon, 42 tRNA genes) and 3 ribosomal RNAs (x2), which constitutes a gene content of 11.41% (77,465 bp) over the full length. In the whole genome, cp (chloroplast)-derived region accounts for 5.07% and includes 11 proteins (13 genes), 3 pseudo genes and 11 tRNAs. The mt genome has a relatively large repeat percent (17.26%), including forward repeats and inverted repeats. By mapping 8 RNA-seq data to the mt genome, 734 RNA editing sites were identified with at least two data set supports. Nucifera clustered with Phoenix dactylifera and Butomus umbellatus in monocot plants, while the 18S rRNA phylogenetic tree shown that B. We also studied the transcriptome profiles based on RNA-seq data and a lot of hypothetical proteins and pseudo genes shown significant differential expression. In summary, we provide the second complete mt genome sequence in family Arecaceae, which can be used for further investigations on the mitochondrial biology of seed plants.