Characterization and Comparative Analysis of the Complete Chloroplast Genome of the Critically Endangered Species Streptocarpus teitensis (Gesneriaceae).

Characterization and Comparative Analysis of the Complete Chloroplast Genome of the Critically Endangered Species Streptocarpus teitensis (Gesneriaceae).
Biomed Res Int. 2018;2018:1507847
Authors: Kyalo CM, Gichira AW, Li ZZ, Saina JK, Malombe I, Hu GW, Wang QF
Abstract
Streptocarpus teitensis (Gesneriaceae) is an endemic species listed as critically endangered in the International Union for Conservation of Nature (IUCN) red list of threatened species. However, the sequence and genome information of this species remains to be limited. In this article, we present the complete chloroplast genome structure of Streptocarpus teitensis and its evolution inferred through comparative studies with other related species. S. teitensis displayed a chloroplast genome size of 153,207 bp, sheltering a pair of inverted repeats (IR) of 25,402 bp each split by small and large single-copy (SSC and LSC) regions of 18,300 and 84,103 bp, respectively. The chloroplast genome was observed to contain 116 unique genes, of which 80 are protein-coding, 32 are transfer RNAs, and four are ribosomal RNAs. In addition, a total of 196 SSR markers were detected in the chloroplast genome of Streptocarpus teitensis with mononucleotides (57.1%) being the majority, followed by trinucleotides (33.2%) and dinucleotides and tetranucleotides (both 4.1%), and pentanucleotides being the least (1.5%). Genome alignment indicated that this genome was comparable to other seq...

Source: Biomed Res - May 18, 2018 Category: Research Authors: Kyalo CM, Gichira AW, Li ZZ, Saina JK, Malombe I, Hu GW, Wang QF Tags: Biomed Res Int Source Type: research