Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications

Abstract Background The invasive species Xanthium spinosum has been used as a traditional Chinese medicine for many years. Unfortunately, no extensive molecular studies of this plant have been conducted. Results Here, the complete chloroplast (cp) genome sequence of X. spinosum was assembled and ana...

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Main Authors: Gurusamy Raman, Kyu Tae Park, JooHwan Kim, SeonJoo Park
Format: Article
Language:English
Published: BMC 2020-12-01
Series:BMC Genomics
Subjects:
Online Access:https://doi.org/10.1186/s12864-020-07219-0
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author Gurusamy Raman
Kyu Tae Park
JooHwan Kim
SeonJoo Park
author_facet Gurusamy Raman
Kyu Tae Park
JooHwan Kim
SeonJoo Park
author_sort Gurusamy Raman
collection DOAJ
description Abstract Background The invasive species Xanthium spinosum has been used as a traditional Chinese medicine for many years. Unfortunately, no extensive molecular studies of this plant have been conducted. Results Here, the complete chloroplast (cp) genome sequence of X. spinosum was assembled and analyzed. The cp genome of X. spinosum was 152,422 base pairs (bp) in length, with a quadripartite circular structure. The cp genome contained 115 unique genes, including 80 PCGs, 31 tRNA genes, and 4 rRNA genes. Comparative analyses revealed that X. spinosum contains a large number of repeats (999 repeats) and 701 SSRs in its cp genome. Fourteen divergences (Π > 0.03) were found in the intergenic spacer regions. Phylogenetic analyses revealed that Parthenium is a sister clade to both Xanthium and Ambrosia and an early-diverging lineage of subtribe Ambrosiinae, although this finding was supported with a very weak bootstrap value. Conclusion The identified hotspot regions could be used as molecular markers for resolving phylogenetic relationships and species identification in the genus Xanthium.
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spelling doaj.art-fd09cb08ab0342b98ad8bae88db8e94b2022-12-21T19:54:50ZengBMCBMC Genomics1471-21642020-12-0121111410.1186/s12864-020-07219-0Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implicationsGurusamy Raman0Kyu Tae Park1JooHwan Kim2SeonJoo Park3Department of Life Sciences, Yeungnam UniversityDepartment of Life Sciences, Yeungnam UniversityDepartment of Life Sciences, Gachon UniversityDepartment of Life Sciences, Yeungnam UniversityAbstract Background The invasive species Xanthium spinosum has been used as a traditional Chinese medicine for many years. Unfortunately, no extensive molecular studies of this plant have been conducted. Results Here, the complete chloroplast (cp) genome sequence of X. spinosum was assembled and analyzed. The cp genome of X. spinosum was 152,422 base pairs (bp) in length, with a quadripartite circular structure. The cp genome contained 115 unique genes, including 80 PCGs, 31 tRNA genes, and 4 rRNA genes. Comparative analyses revealed that X. spinosum contains a large number of repeats (999 repeats) and 701 SSRs in its cp genome. Fourteen divergences (Π > 0.03) were found in the intergenic spacer regions. Phylogenetic analyses revealed that Parthenium is a sister clade to both Xanthium and Ambrosia and an early-diverging lineage of subtribe Ambrosiinae, although this finding was supported with a very weak bootstrap value. Conclusion The identified hotspot regions could be used as molecular markers for resolving phylogenetic relationships and species identification in the genus Xanthium.https://doi.org/10.1186/s12864-020-07219-0Nucleotide diversityDivergenceAmbrosiinae: genetic markers, phylogenomics
spellingShingle Gurusamy Raman
Kyu Tae Park
JooHwan Kim
SeonJoo Park
Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
BMC Genomics
Nucleotide diversity
Divergence
Ambrosiinae: genetic markers, phylogenomics
title Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
title_full Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
title_fullStr Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
title_full_unstemmed Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
title_short Characteristics of the completed chloroplast genome sequence of Xanthium spinosum: comparative analyses, identification of mutational hotspots and phylogenetic implications
title_sort characteristics of the completed chloroplast genome sequence of xanthium spinosum comparative analyses identification of mutational hotspots and phylogenetic implications
topic Nucleotide diversity
Divergence
Ambrosiinae: genetic markers, phylogenomics
url https://doi.org/10.1186/s12864-020-07219-0
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