Complete plastid genome of Persea americana Mill. (Ebenales) and phylogenetic analysis

Abstract

The chloroplast (cp) genome sequence of Persea americana Mill. has been characterized from Illumina pair-end sequencing. The complete cp genome was 152,732 bp in length, containing a large single copy region (LSC) of 84,632 bp and a small single copy region (SSC) of 18,346 bp, which were separated by a pair of 24,877 bp inverted repeat regions (IRs). The genome contained 126 genes, including 86 protein coding genes, 32 tRNA genes, and eight rRNA genes. Further, phylogenetic analysis of 10 representative sequences within the order Ebenales suggests that Persea americana Mill. is closely related to the species in family Sapotaceae.

The chloroplast genome of black pepper (Piper nigrum L.) and its comparative analysis with related Piper species

“…One reason for this may be a disrupted open reading frame due to the presence of an internal stop codon(s). In P. nigrum , the ycf1 gene was identified to be the only pseudogene, similar to P. kadsura ( Lee et al., 2016 ) and P. laetispicum ( Wang et al., 2018 ), while Cinnamomum camphora and Persea americana are reported to have three ( rpl23 , ycf1 , and ycf2 ) and two ( ycf1 and ycf2 ) pseudogenes, respectively ( Li et al., 2019 ; Liu et al., 2019 ).…”

“…Piper auritum had a minimum number of tandem repeats ( Wang et al., 2018 ; NC_034697). Likewise, palindromic and forward repeats were the most abundant repeat types in other plant types like P. americana ( Liu et al., 2019 ) and Aristolochia contorta ( Zhou et al., 2017 ). These repeats have been reported to be responsible for chloroplast genome rearrangement, gene duplication, and gene expression ( Do et al., 2014 ; Vieira et al., 2014 ).…”