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Open AccessArticle

The Complete Chloroplast Genome Sequence of the Speirantha gardenii: Comparative and Adaptive Evolutionary Analysis

Department of Life Sciences, Yeungnam University, Gyeongsan 38541, Gyeongsan-buk, Korea
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Agronomy 2020, 10(9), 1405; https://doi.org/10.3390/agronomy10091405
Received: 10 August 2020 / Revised: 3 September 2020 / Accepted: 14 September 2020 / Published: 16 September 2020
(This article belongs to the Section Horticultural and Floricultural Crops)
The plant “False Lily of the Valley”, Speirantha gardenii is restricted to south-east China and considered as an endemic plant. Due to its limited availability, this plant was less studied. Hence, this study is focused on its molecular studies, where we have sequenced the complete chloroplast genome of S. gardenii and this is the first report on the chloroplast genome sequence of Speirantha. The complete S. gardenii chloroplast genome is of 156,869 bp in length with 37.6% GC, which included a pair of inverted repeats (IRs) each of 26,437 bp that separated a large single-copy (LSC) region of 85,368 bp and a small single-copy (SSC) region of 18,627 bp. The chloroplast genome comprises 81 protein-coding genes, 30 tRNA and four rRNA unique genes. Furthermore, a total of 699 repeats and 805 simple-sequence repeats (SSRs) markers are identified in the genome. Additionally, KA/KS nucleotide substitution analysis showed that seven protein-coding genes have highly diverged and identified nine amino acid sites under potentially positive selection in these genes. Phylogenetic analyses suggest that S. gardenii species has a closer genetic relationship to the Reineckea, Rohdea and Convallaria genera. The present study will provide insights into developing a lineage-specific marker for genetic diversity and gene evolution studies in the Nolinoideae taxa. View Full-Text
Keywords: Speirantha gardenii; chloroplast genome; positive selection; adaptive evolution; substitution; Nolinoideae Speirantha gardenii; chloroplast genome; positive selection; adaptive evolution; substitution; Nolinoideae
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Raman, G.; Park, S. The Complete Chloroplast Genome Sequence of the Speirantha gardenii: Comparative and Adaptive Evolutionary Analysis. Agronomy 2020, 10, 1405.

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