Plastomes of Ten Blumea Species (Asteraceae): Comparative Analysis and Phylogenetic Relationships
5 affiliations
- 1School of Biological Sciences Guizhou Education University Guiyang Guizhou China
- 2College of Coastal Agricultural Sciences Guangdong Ocean University Zhanjiang Guangdong China
- 3School of Pharmacy Xi'an Jiaotong University Xi'an Shaanxi China
- 4Xi'an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi Province Xi'an Shaanxi China
- 5College of Life Science Shanxi Normal University Taiyuan Shanxi China
Abstract
Blumea (Asteraceae) comprises about 100 species distributed across tropical Asia, Africa, and Australia, many of which have medicinal value. However, morphological variation caused by hybridization has left the taxonomy of this genus unresolved. In this study, we assembled the chloroplast genomes of six Blumea species ( B. repanda , B. axillaris , B. sinuata , B. martiniana , B. megacephala , and B. formosana ) and compared them with those of four published species ( B. oxyodonta , B. tenella , B. aromatica , and B. balsamifera ). The six new plastomes are similar in size (150,783–151,281 bp), with a typical quadripartite structure, each containing 131 genes (86 protein‐coding genes, 37 tRNAs, and 8 rRNAs). Comparative analyses revealed conserved genome architecture, stable IR/SC boundaries, and no rearrangements. Six non‐coding and four coding regions were identified as candidate DNA barcodes. A total of 395 dispersed repeats, 79 tandem repeats, and 547 SSRs were identified. Among the 59 preferred codons, 29 were high‐frequency (RSCU > 1), and 28 of these ended in A/U. Additionally, positive selection was detected in 21 genes, for example, ycf1 , ycf2 , rpoB , and ndhA . Phylogenetic analyses (ML and BI) based on 23 taxa (21 Inuleae species plus two outgroups) showed that Blumea is a highly supported monophyletic group (BS = 100%, PP = 1.00), internally divided into three subclades: subclade I ( B. axillaris , B. oxyodonta , B. megacephala , B. repanda , B. sinuata , and B. tenella ), subclade II ( B. balsamifera ), and subclade III ( B. aromatica , B. formosana , and B. martiniana ), with the latter three species all belonging to Section Macrophylla. These genomic resources lay a foundation for future phylogenetic, population‐genetic, and biotechnological studies of Blumea .
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BibTeX
@article{zhao2026plastomes,
title = {{Plastomes of Ten Blumea Species (Asteraceae): Comparative Analysis and Phylogenetic Relationships}},
author = {Yuemei Zhao and Weixiang Yang and Changjiang Qian and Tao Zhou and Xiao Zhang and Xiaodan Chen and Rongxiang Zhang and Xun Liu},
journal = {Ecology and evolution},
year = {2026},
month = oct,
doi = {10.1002/ece3.74361},
url = {https://europepmc.org/article/PMC/PMC13658934},
note = {CC BY},
}
RIS
TY - JOUR
TI - Plastomes of Ten Blumea Species (Asteraceae): Comparative Analysis and Phylogenetic Relationships
AU - Yuemei Zhao
AU - Weixiang Yang
AU - Changjiang Qian
AU - Tao Zhou
AU - Xiao Zhang
AU - Xiaodan Chen
AU - Rongxiang Zhang
AU - Xun Liu
PY - 2026
DA - 2026/10/01
JO - Ecology and evolution
DO - 10.1002/ece3.74361
UR - https://europepmc.org/article/PMC/PMC13658934
AB - Blumea (Asteraceae) comprises about 100 species distributed across tropical Asia, Africa, and Australia, many of which have medicinal value. However, morphological variation caused by hybridization has left the taxonomy of this genus unresolved. In this study, we assembled the chloroplast genomes of six Blumea species ( B. repanda , B. axillaris , B. sinuata , B. martiniana , B. megacephala , and B. formosana ) and compared them with those of four published species ( B. oxyodonta , B. tenella , B. aromatica , and B. balsamifera ). The six new plastomes are similar in size (150,783–151,281 bp), with a typical quadripartite structure, each containing 131 genes (86 protein‐coding genes, 37 tRNAs, and 8 rRNAs). Comparative analyses revealed conserved genome architecture, stable IR/SC boundaries, and no rearrangements. Six non‐coding and four coding regions were identified as candidate DNA barcodes. A total of 395 dispersed repeats, 79 tandem repeats, and 547 SSRs were identified. Among the 59 preferred codons, 29 were high‐frequency (RSCU > 1), and 28 of these ended in A/U. Additionally, positive selection was detected in 21 genes, for example, ycf1 , ycf2 , rpoB , and ndhA . Phylogenetic analyses (ML and BI) based on 23 taxa (21 Inuleae species plus two outgroups) showed that Blumea is a highly supported monophyletic group (BS = 100%, PP = 1.00), internally divided into three subclades: subclade I ( B. axillaris , B. oxyodonta , B. megacephala , B. repanda , B. sinuata , and B. tenella ), subclade II ( B. balsamifera ), and subclade III ( B. aromatica , B. formosana , and B. martiniana ), with the latter three species all belonging to Section Macrophylla. These genomic resources lay a foundation for future phylogenetic, population‐genetic, and biotechnological studies of Blumea .
SN - 2045-7758
ER -