Boswellia sacra Plastid Genome Sequencing and Comparative Analysis

  • Ahmed Al-Harrasi
  • Abdul Latif Khan
  • Sajjad Asaf
  • Ahmed Al-Rawahi


Boswellia sacra (Burseraceae), a keystone endemic species, is famous for producing a fragrant oleogum resin. However, its genetic make-up, especially its chloroplast genome information, is still unknown. Here, we described the chloroplast (cp) genome of B. sacra for the first time. The complete cp sequence revealed a circular genome of 160,543 bp with a 37.61% GC content. The cp genome is a typical quadripartite chloroplast structure with inverted repeats (IRs 26,763 bp) separated by small single copy (SSC; 18,962 bp) and large single copy (LSC; 88,055 bp) regions. De novo assembly and annotation showed the presence of 114 unique genes with 83 protein-coding regions. A phylogenetic analysis revealed that the B. sacra cp genome is closely related to the cp genomes of Azadirachta indica and Citrus sinensis, while most of the syntenic differences were found in the non-coding regions. The pairwise distance among 76 shared genes in B. sacra and A. indica was highest for atpA, rpl2, rps12 and ycf1. The cp genome of B. sacra reveals a novel genome, which could be used for further studies to understand its diversity, taxonomy and phylogeny.


Chloroplast DNA Quadripartite Inverted repeat LSC SSC Protein-coding genes Phylogeny Divergence 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Ahmed Al-Harrasi
    • 1
  • Abdul Latif Khan
    • 1
  • Sajjad Asaf
    • 1
  • Ahmed Al-Rawahi
    • 1
  1. 1.University of NizwaNizwaOman

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